The Size Scale and Baryonic Content of Low Redshift Intergalactic Absorbers

added CoI expertise 1437916110 Assigned ID: 6808 ----- Attempting Submission 1 (Thu Apr 10 22:56:39 GMT 2025) ----- HST Phase I Proposal 6808 successfully submitted. Receipt: # 6808-1 ----- Attempting Submission 2 (Thu Apr 10 23:20:12 GMT 2025) ----- HST Phase I Proposal 6808 successfully submitted. Receipt: # 6808-2 ----- Attempting Submission 3 (Thu Apr 10 23:24:54 GMT 2025) ----- If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. If the target position is not known to 0.4" (or better), an ACQ/SEARCH should precede the ACQ/IMAGE. Changed the acquisition aperture and mirror for MRK734 to have the counts/sec for the acquisiton be within the countrate limits. 619671093 ----- Attempting Submission 1 (Wed Jul 30 20:06:49 GMT 2025) ----- HST Phase II Proposal 18053 successfully submitted. Receipt: # 18053-1 ----- Attempting Submission 2 (Thu Aug 21 17:12:10 GMT 2025) ----- Changed mirror/aperture for MRK734 acquisition to stay within countrate limits The Size Scale and Baryonic Content of Low Redshift Intergalactic Absorbers This proposal aims at observationally determining the characteristic size scale of intergalactic absorbers near redshift 0, which make up the 10,000 K photoionized phase of the intergalactic medium (IGM). Such sizes are a key ingredient in the derivation of the fraction of baryons in the photoionized phase of the IGM. By comparing absorber sizes at z>2 with those locally, we will test predictions that suggest significant growth over cosmic time. This growth is responsible for reducing the gas accretion rate and star formation rate of galaxies. We will determine the distribution of characteristic absorber size at z=0 by observing 23 QSOs, which, combined with existing HST STIS/COS data for 13 targets, constitute 18 pairs of sightlines, separated by less than 3 arcmin (40 kpc at cz=3500 km/s). The dual sightline approach will allow us to probe the correlations between Lya absorbers on size scales ranging from 5 to 100 kpc, as a function of HI column density and environment. Our analysis will allow us to compare transverse sizes to sizes derived from photo-ionization modeling, characterize IGM turbulence, compare transverse and line-of-sight correlations, examine large-scale flows, and study structures in galactic halos. } We will take spectra of 21 AGN that are within 3 arcmin of a second AGN. For most targets an ACQ/IMAGE acquisition suffices. but for IC2746 and UM643 an 3x3 ACQ/SEARCH is done to find the brightest spot in what is a slightly extended object. All spectra are taken with G130M using the 1291 central wavelength setting. For the first orbit FP-POS=3 is used, while for the second or third orbit in a visit FP-POS=4. Targets for which more than 3 orbits are allocated are assigned multiple visits or 2 or 3 orbits. The PI Dr Bart Wakker has an extensive background in studies of the interstellar and intergalactic medium, having published over 100 papers on these subjects, using data from ground-based radio and optical telescopes, as ell as many of the UV space instruments (IUE, FUSE, FOS, GHRS, STIS, COS), being PI on 16 HST observing and 4 HST archival projects, as well as Co-PI on 19 others. Prof. Jane Charlton is an expert in quasar absorption line (QAL) spectroscopy and ionization modeling of quasar absorbers. She has been PI (Co-I) on 9 (over 20) HST programs. She will supervise the work in building detailed multiphase ionization models of the absorbers. Dr Benjamin Oppenheimer over 100 publications on the analysis of simulations, including studies of metal ions in the IGM, the effects of different processes on the physical properties of the CGM, and, of special relevance to the current proposal, the extraction of data on individual galaxies from the simulation. He is also a collaborator on the CAMEL project. Dr Benjamin Rosenwasser is a postdoc at Toledo University who is working on a number of projects analyzing absorption line data, focusing especially on photoionization models and finding galaxies near the QSOs. Dr. Joel Bregman has spent most of his career in the area of the gaseous medium of galaxies, clusters, and the IGM. He has published a number of papers in the areas of cooling flows and feedback both in X-ray, UV astronomy, and theory. He has worked with and published both HST imaging data and spectral data. Dr. Sameer is a currently a postdoc at Notre Dame University, having obtained his Ph.D. from Penn State working under Prof. Charlton. He has developed an efficient Bayesian inference based multiphase ionization modeling code that provides novel insights into the physics underlying absorption line systems. He will be instrumental in the ionization modeling of these systems. Intergalactic Medium and the Circumgalactic Medium 6 false false false false false false SUPPORTED GALAXY QUASAR NO J2000 J2000 F=0.08E-14@1250; z=0.561941 GALAXY QUASAR NO J2000 J2000 F=0.19E-14@1250; z=0.985692 GALAXY QUASAR NO J2000 J2000 F=0.15E-14@1250; z=0.982415 GALAXY QUASAR NO J2000 J2000 F=0.47E-14@1250; z=0.48400 GALAXY QUASAR NO J2000 J2000 F=0.10E-14@1250; z=0.485765 GALAXY QUASAR NO J2000 J2000 F=0.16E-14@1250; z=0.236847 GALAXY QUASAR NO J2000 J2000 F=0.09E-14@1250; z=0.284400 GALAXY SEYFERT NO J2000 J2000 F=0.29E-14@1250; z=0.036700 GALAXY SEYFERT NO J2000 J2000 F=0.19E-14@1250; z=0.037309 GALAXY QUASAR NO J2000 J2000 F=0.06E-14@1250; z=0.211347 GALAXY QUASAR NO J2000 J2000 F=1.69E-14@1250; z=0.061152 GALAXY QUASAR NO J2000 J2000 F=0.26E-14@1250; z=0.114627 GALAXY QUASAR NO J2000 J2000 F=0.19E-14@1250; z=0.160738 GALAXY QUASAR NO J2000 J2000 F=0.12E-14@1250; z=0.148000 GALAXY QUASAR NO J2000 J2000 F=0.06E-14@1250; z=0.221155 GALAXY SEYFERT NO J2000 J2000 F=0.32E-14@1250; z=0.034393 GALAXY SEYFERT NO J2000 J2000 F=0.12E-14@1250; z=0.034450 GALAXY SEYFERT NO J2000 J2000 F=4.00E-14@1250; z=0.050201 GALAXY SEYFERT NO J2000 J2000 F=0.11E-14@1250; z=0.039882 GALAXY SEYFERT NO J2000 J2000 F=0.41E-14@1250; z=0.036350 GALAXY SEYFERT NO J2000 J2000 F=0.21E-14@1250; z=0.036834 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 COS/FUV Spectroscopic No No G130M 1291 1753902154504 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v01.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "01" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:34.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "01" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2596 :al-overhead-at-end 0 :internal-dur-at-end 2293 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2976 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "01" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2596 :al-overhead-at-end 0 :internal-dur-at-end 2293 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2976 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "01" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2596 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2976 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.08E-14 Count rate 166/sec with MIRRORB. Nominal exposure time for S/N=30 is 5 sec, doubled to 10 sec Exposure with FP-POS=3, first orbit total count rate 344/sec S/N(orbit)~3.1, S/N(total)~7.3 Exposure with FP-POS=4, second orbit total count rate 344/sec S/N(orbit)~3;4, S/N(total)~7.3 Exposure with FP-POS=4, third orbit total count rate 344/sec S/N(orbit)~3.4, S/N(total)~7.3 1753902155956 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v02.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "02" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:35.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "02" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2596 :al-overhead-at-end 0 :internal-dur-at-end 2293 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2976 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "02" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2596 :al-overhead-at-end 0 :internal-dur-at-end 2293 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2976 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "02" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2596 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2976 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.08E-14 Count rate 166/sec with MIRRORB. Nominal exposure time for S/N=30 is 5 sec, doubled to 10 sec Exposure with FP-POS=3, first orbit total count rate 344/sec S/N(orbit)~3.1, S/N(total)~7.3 Exposure with FP-POS=4, second orbit total count rate 344/sec S/N(orbit)~3.4, S/N(total)~7.3 Exposure with FP-POS=4, second orbit total count rate 344/sec S/N(orbit)~3.4, S/N(total)~7.3 1753902157269 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v03.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "03" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:37.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "03" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 2243 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "03" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 2243 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "03" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.19E-14 Count rate 20/sec Exposure with FP-POS=3, first orbit total count rate 370/sec S/N(orbit)~5.0, S/N(total)~9.3 Exposure with FP-POS=4, second orbit total count rate 370/sec S/N(orbit)~5.5, S/N(total)~9.3 Exposure with FP-POS=4, third orbit total count rate 370/sec S/N(orbit)~5.5, S/N(total)~9.3 1753902158518 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v04.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "04" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:38.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "04" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 2243 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "04" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 2243 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "04" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.15E-14 Count rate 15/sec Exposure with FP-POS=3, first orbit total count rate 360/sec S/N(orbit)~4.4, S/N(total)~8.1 Exposure with FP-POS=4. second orbit total count rate 360/sec S/N(orbit)~4.9, S/N(total)~8.1 EExposure with FP-POS=4. third orbit total count rate 360/sec S/N(orbit)~4.9, S/N(total)~8.1 1753902159662 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v05.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "05" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:39.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 104640 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "05" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 488 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) true 1 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.47E-14 Count rate 48/sec Exposure with FP-POS=3, first half of orbit total count rate 437/sec S/N(orbit)~5.1, S/N(total)~7.6 Exposure with FP-POS=4, second half of orbit total count rate 437/sec S/N(orbit)~5.1, S/N(total)~7.6 1753902160870 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v06.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "06" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:40.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "06" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 2295 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "06" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 2295 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "06" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.10E-14 Count rate 10/sec Exposure with FP-POS=3, first orbit total count rate 349/sec S/N(orbit)~3.4, S/N(total)~7.2 Exposure with FP-POS=4, second orbit total count rate 349/sec S/N(orbit)~3.8, S/N(total)~7.2 Exposure with FP-POS=4, second orbit total count rate 349/sec S/N(orbit)~3.8, S/N(total)~7.2 1753902161920 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v07.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "07" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:41.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "07" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 2295 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "07" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.10E-14 Count rate 10/sec Exposure with FP-POS=3, first orbit total count rate 349/sec S/N(orbit)~3.4, S/N(total)~7.2 Exposure with FP-POS=4, second orbit total count rate 349/sec S/N(orbit)~3.8, S/N(total)~7.2 1753902163545 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v08.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "08" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:43.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "08" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 2290 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "08" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 2290 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "08" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.16E-14 Count rate 16/sec Exposure with FP-POS=3, first orbit total count rate 363/sec S/N(orbit)~4.5, S/N(total)~8.4 Exposure with FP-POS=4, second orbit total count rate 363/sec S/N(orbit)~5.0, S/N(total)~8.4 Exposure with FP-POS=4, second orbit total count rate 363/sec S/N(orbit)~5.0, S/N(total)~8.4 1753902164849 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v09.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "09" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:44.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "09" :obset-id "09" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "09" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 2277 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "09" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 2277 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "09" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.09E-14 Count rate 9/sec Exposure with FP-POS=3, first orbit total count rate 346/sec S/N(orbit)~3.2, S/N(total)~7.7 Exposure with FP-POS=4, second orbit total count rate 346/sec S/N(orbit)~3.6, S/N(total)~7.7 Exposure with FP-POS=4, third orbit total count rate 346/sec S/N(orbit)~3.6, S/N(total)~7.7 1753902166078 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v10.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "10" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:45.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "10" :obset-id "10" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "10" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 2277 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "10" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 2277 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "10" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.09E-14 Count rate 9/sec Exposure with FP-POS=3, first orbit total count rate 346/sec S/N(orbit)~3.2, S/N(total)~7.7 Exposure with FP-POS=4, second orbit total count rate 346/sec S/N(orbit)~3.6, S/N(total)~7.7 Exposure with FP-POS=4, second orbit total count rate 346/sec S/N(orbit)~3.6, S/N(total)~7.7 1753902167014 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v11.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "11" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:46.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "11" :obset-id "11" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "11" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 2290 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "11" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.29E-14 Count rate 30/sec Exposure with FP-POS=3, first orbit total count rate 394/sec S/N(orbit)~6.2, S/N(total)~9.3 Exposure with FP-POS=4, second orbit total count rate 394/sec S/N(orbit)~6.8, S/N(total)~9.3 1753902168239 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v12.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "12" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:48.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "12" :obset-id "12" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "12" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 2290 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "12" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 2290 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "12" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.19E-14 Count rate 20/sec Exposure with FP-POS=3, first orbit total count rate 370/sec S/N(orbit)~4.9, S/N(total)~9.2 Exposure with FP-POS=4, second orbit total count rate 370/sec S/N(orbit)~5.5, S/N(total)~9.2 Exposure with FP-POS=4, third orbit total count rate 370/sec S/N(orbit)~5.5 S/N(total)~9.2 1753902169488 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v13.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "13" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:49.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "13" :obset-id "13" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "13" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 2243 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "13" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 2243 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "13" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.06E-14 Count rate 124/sec with MIRRORA, exposure time too long with MIRRORB Nominal exposure time 7 sec, doubled to 15 sec Exposure with FP-POS=3, third orbit total count rate 339/sec S/N(orbit)~2.6, S/N(total)~7.3 Exposure with FP-POS=4, second orbit total count rate 339/sec S/N(orbit)~2.9, S/N(total)~7.9 Exposure with FP-POS=4, third orbit total count rate 339/sec S/N(orbit)~2.9, S/N(total)~7.3 1753902170447 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v14.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "14" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:50.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "14" :obset-id "14" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "14" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 2243 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "14" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=40; F=0.06E-14 Count rate 124/sec with MIRRORA, exposure time oto long with MIRRORB Exposure with FP-POS=3, third orbit total count rate 339/sec S/N(orbit)~2.6, S/N(total)~7.3 Exposure with FP-POS=4, second orbit total count rate 339/sec S/N(orbit)~2.9, S/N(total)~7.9 1753902171587 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v15.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "15" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:51.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "15" :obset-id "15" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "15" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 2243 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "15" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2646 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=40; F=0.06E-14 Count rate 124/sec with MIRRORA, exposure time oto long with MIRRORB Exposure with FP-POS=3, third orbit total count rate 339/sec S/N(orbit)~2.6, S/N(total)~7.3 Exposure with FP-POS=4, second orbit total count rate 339/sec S/N(orbit)~2.9, S/N(total)~7.9 1753902172458 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v16.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "16" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:52.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 104640 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "16" :obset-id "16" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "16" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2664 :al-overhead-at-end 0 :internal-dur-at-end 488 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3044 :pcs-gap 0 ) true 1 0 NUV acquisition exposure COS ETC result for S/N=30; F=1.69E-14 Count rate 174/sec Nominal exposure time 5 sec, doubled to 10 sec Exposure with FP-POS=3, first orbit total count rate 728/sec S/N(orbit)~10.2, S/N(total)~14.4 Exposure with FP-POS=4, second orbit total count rate 728/sec S/N(orbit)~10.2, S/N(total)~14.4 1753902173324 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v17.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "17" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:53.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "17" :obset-id "17" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "17" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2664 :al-overhead-at-end 0 :internal-dur-at-end 2225 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3044 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "17" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2664 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3044 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.26E-14 Count rate 27/sec Exposure with FP-POS=3, first orbit total count rate 387/sec S/N(orbit)~6.0, S/N(total)~8.6 Exposure with FP-POS=4, second orbit total count rate 387/sec S/N(orbit)~6.5, S/N(total)~8.6 1753902174521 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v18.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "18" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:54.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "18" :obset-id "18" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "18" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 2277 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "18" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 2277 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "18" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.19E-14 Count rate 20/sec Exposure with FP-POS=3, first orbit total count rate 370/sec S/N(orbit)~5.0, S/N(total)~9.2 Exposure with FP-POS=4, second orbit total count rate 370/sec S/N(orbit)~5.5, S/N(total)~9.2 Exposure with FP-POS=4, third orbit total count rate 370/sec S/N(orbit)~5.5, S/N(total)~9.2 1753902175961 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v19.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "19" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:55.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "19" :obset-id "19" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "19" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 2277 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "19" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 2277 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "19" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.12E-14 Count rate 12/sec Exposure with FP-POS=3, first orbit total count rate 353/sec S/N(orbit)~3.8, S/N(total)~8.1 Exposure with FP-POS=4, second orbit total count rate 353/sec S/N(orbit)~4.3, S/N(total)~8.1 Exposure with FP-POS=4, second orbit total count rate 353/sec S/N(orbit)~4.3, S/N(total)~8.1 1753902176888 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v20.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "20" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:56.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "20" :obset-id "20" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "20" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 2277 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "20" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2612 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2992 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.12E-14 Count rate 12/sec Exposure with FP-POS=3, first orbit total count rate 353/sec S/N(orbit)~3.8, S/N(total)~8.1 Exposure with FP-POS=4, second orbit total count rate 353/sec S/N(orbit)~4.3, S/N(total)~8.1 1753902178141 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v21.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "21" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:57.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 243872 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "21" :obset-id "21" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "21" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2603 :al-overhead-at-end 0 :internal-dur-at-end 2286 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2983 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "21" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2603 :al-overhead-at-end 0 :internal-dur-at-end 2286 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2983 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "21" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2603 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2983 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.06E-14 Count rate 124/sec with MIRRORA Nominal exposure 7 sec, doubled to 14 sec Exposure with FP-POS=3, first orbit total count rate 339/sec S/N(orbit)~2.6, S/N(total)~8.3 Exposure with FP-POS=4, second orbit total count rate 339/sec S/N(orbit)~2.8, S/N(total)~8.3 Exposure with FP-POS=4, third orbit total count rate 330/sec S/N(orbit)~2.8, S/N(total)~8.3 1753902179653 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v22.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "22" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:02:59.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "22" :obset-id "22" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "22" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2603 :al-overhead-at-end 0 :internal-dur-at-end 2286 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2983 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "22" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2603 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2983 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.06E-14 Count rate 124/sec with MIRRORA Nominal exposure 7 sec, doubled to 14 sec Exposure with FP-POS=3, first orbit total count rate 339/sec S/N(orbit)~2.6, S/N(total)~8.3 Exposure with FP-POS=4, second orbit total count rate 339/sec S/N(orbit)~2.8, S/N(total)~8.3 1753902180526 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v23.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "23" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:03:00.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "23" :obset-id "23" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "23" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2603 :al-overhead-at-end 0 :internal-dur-at-end 2286 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2983 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "23" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2603 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2983 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.06E-14 Count rate 124/sec with MIRRORA Nominal exposure 7 sec, doubled to 14 sec Exposure with FP-POS=3, first orbit total count rate 339/sec S/N(orbit)~2.6, S/N(total)~8.3 Exposure with FP-POS=4, second orbit total count rate 339/sec S/N(orbit)~2.8, S/N(total)~8.3 1753902181388 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v24.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "24" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:03:01.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "24" :obset-id "24" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "24" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2621 :al-overhead-at-end 0 :internal-dur-at-end 2268 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3001 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "24" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2621 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3001 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.32E-14 Count rate 33/sec Exposure with FP-POS=3, first orbit total count rate 401/sec S/N(orbit)~6.6, S/N(total)~9.8 Exposure with FP-POS=4. second orbit total count rate 401/sec S/N(orbit)~7.3, S/N(total)~9.8 1753902182245 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v25.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "25" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:03:02.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "25" :obset-id "25" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "25" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2621 :al-overhead-at-end 0 :internal-dur-at-end 2268 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3001 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "25" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2621 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3001 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.12E-14 Count rate 12/sec Exposure with FP-POS=3, first orbit total count rate 353/sec S/N(orbit)~3.8, S/N(total)~8.1 Exposure with FP-POS=4. second orbit total count rate 353/sec S/N(orbit)~4.3, S/N(total)~8.1 1753902183103 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v26.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "26" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:03:02.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "26" :obset-id "26" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "26" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2621 :al-overhead-at-end 0 :internal-dur-at-end 2268 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3001 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "26" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2621 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3001 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.12E-14 Count rate 12/sec Exposure with FP-POS=3, first orbit total count rate 353/sec S/N(orbit)~3.8, S/N(total)~8.1 Exposure with FP-POS=4. second orbit total count rate 353/sec S/N(orbit)~4.3, S/N(total)~8.1 1755794013092 /private/var/folders/8f/lq43b7f92d560w7zbt68px680000gn/T/OPVisit16696191147958690347.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "27" :proposal-version -1 :trans-version "20250624" :date "21-Aug-2025 11:33:33.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 104640 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "27" :obset-id "27" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "27" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 488 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) true 1 0 NUV acquisition exposure COS ETC result for S/N=30; F=4.00E-14 Using MIRRORB+PSA count rate 412/se, nominal exposure time 2 sec, increased to 5 (COS.ta.2022243) Using MIRRORA+BOA count rate 41/s, exposure time 21.9 sec, rounded to 22 sec. Exposure with FP-POS=3, first half of orbit total count rate 1280/sec S/N(orbit)~15.5, S/N(total)~21.9 Exposure with FP-POS=4, second half of orbit total count rate 1280/sec S/N(orbit)~15.5, S/N(total)~21.9 1753902185193 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v28.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "28" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:03:04.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 217744 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "28" :obset-id "28" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "28" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 2295 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "28" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 2295 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "28" :orbit-number 3 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) true 3 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.11E-14 Count rate 228/sec Exposure with FP-POS=3, first half of orbit total count rate 351/sec S/N(orbit)~3.6, S/N(total)~7.7 Exposure with FP-POS=4, second half of orbit total count rate 351/sec S/N(orbit)~4.0, S/N(total)~7.7 Exposure with FP-POS=4, second half of orbit total count rate 351/sec S/N(orbit)~4.0, S/N(total)~7.7 1753902186492 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v29.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "29" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:03:06.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 139376 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "29" :obset-id "29" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "29" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 2295 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "29" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2594 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.11E-14 Count rate 228/sec Exposure with FP-POS=3, first half of orbit total count rate 351/sec S/N(orbit)~3.6, S/N(total)~7.7 Exposure with FP-POS=4, second half of orbit total count rate 351/sec S/N(orbit)~4.0, S/N(total)~7.7 1753902187499 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v30.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "30" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:03:07.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 139376 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "30" :obset-id "30" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "30" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 2290 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "30" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.41E-14 Count rate 165/sec Exposure with FP-POS=3, first orbit total count rate 423/sec S/N(orbit)~7.5, S/N(total)~11.1 Exposure with FP-POS=4, second orbit total count rate 423/sec S/N(orbit)~8.2, S/N(total)~11.1 1753902188622 /Users/wakker/laptop/telescopes/hst/33_cycle/174_pairs/APT/OP-cache/pairsph2-v31.xml The scheduling data was generated by CASM 33.1. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18053 :visit-id "31" :proposal-version -1 :trans-version "20250624" :date "30-Jul-2025 14:03:08.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "31" :si-bright-earth-limb-angle 20.0 :data-volume 165504 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18053 :visit-id "31" :obset-id "31" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18053 :visit-id "31" :orbit-number 1 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 2290 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) (Tic-Orbit :proposal-id 18053 :visit-id "31" :orbit-number 2 :pcs-time 380 :si-vis-utilization 2599 :al-overhead-at-end 0 :internal-dur-at-end 526 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) true 2 0 NUV acquisition exposure COS ETC result for S/N=30; F=0.21E-14 Count rate 22/sec Exposure with FP-POS=3, first orbit total count rate 374/sec S/N(orbit)~5.2, S/N(total)~7.8 Exposure with FP-POS=4, second orbit total count rate 374/sec S/N(orbit)~5.8, S/N(total)~7.8