Updated abstract. Ok now fingers crossed for sure. -1114341322 Assigned ID: 7819 ----- Attempting Submission 1 (Thu Apr 16 23:51:56 GMT 2026) ----- HST Phase I Proposal 7819 successfully submitted. Receipt: # 7819-1 ----- Attempting Submission 2 (Thu Apr 16 23:54:14 GMT 2026) ----- Orbits are setup to do a 4pt dither pattern in 3 filters to optimize for time. If further optimization is possible, we'd like to update this. 1032845751 ----- Attempting Submission 1 (Tue Aug 18 20:16:55 GMT 2026) ----- Type Ia supernovae (SNe Ia) observed in the near-infrared (NIR) are nearly standard candles with substantially reduced sensitivity to dust extinction relative to the optical, making space-based NIR photometry a powerful tool for precision cosmology. HST-GO-15889/16234 (SIRAH) delivered the first large, well-calibrated Hubble-flow (0.02 < z < 0.075) SN Ia sample with continuous WFC3/IR photometry and 32 NIR grism spectra, achieving an RMS of 0.080 mag in the F160W Hubble diagram. However, 14 of these SNe Ia are in complex host environments while lacking template imaging. This contamination masquerades as intrinsic SN Ia scatter on the Hubble diagram, preventing a clean measurement of the true NIR dispersion. The same effect also contaminates the 32 WFC3/IR grism spectra, where host continuum dispersed along the SN trace cannot be removed without direct imaging templates. We therefore request 14 orbits of WFC3/IR imaging in F105W, F125W, and F160W of these host-galaxy fields after the SNe have faded. The requested depths achieve S/N >= 10 in a 0.20" aperture, limiting template noise to <0.01 mag. These observations will deliver host-subtracted photometry for the complete NIR Hubble diagram, clean grism spectrophotometry for accurate SED and explosion modeling, and the well-calibrated low-redshift NIR anchor required by the Roman SN-PIT pipeline. All data will be released immediately through MAST under the Hubble-Roman Science initiative. (A) Description of Observations We will obtain WFC3/IR host-galaxy template imaging of 14 SIRAH fields (HST-GO-15889/16234) in F105W, F125W, and F160W, one orbit per field. Each field is imaged at a late epoch (> 365 days past peak), when the supernova has faded, to provide clean templates for difference imaging against the earlier SIRAH science-epoch frames. Exposures reach SNR > 10 on the template, keeping its photometric noise contribution to < 0.011 mag. (B) Special Requirements: ORIENT We request an ORIENT tolerance window of +/-5 deg on each field, centered on the position angle of its original SIRAH science-epoch observations. Matching the roll angle between epochs minimizes difference-imaging residuals from PSF variation, geometric distortion, and intra-pixel sensitivity; +/-5 deg is narrow enough to keep these within the template noise budget while preserving schedulability. The central angles are set per field from the archived science-epoch position angles. PI Aadya Agrawal (University of Illinois) is an expert in SN Ia difference imaging and light-curve fitting for space-based data, and will lead the image subtraction and host-subtracted photometry pipeline. Co-PI Conor Larison (STScI) is an expert in SN Ia analysis with space-based observations, and will lead the cosmological parameter analysis. Co-I Saurabh W. Jha (Rutgers) is PI of the SIRAH program, has led multiple HST WFC3/IR programs, and is a member of the Roman SN-PIT. Co-I Mi Dai (University of Pittsburgh/JHU) is a Roman SN-PIT co-investigator with expertise in SN Ia cosmological analysis pipelines, and will co-lead the Hubble-diagram construction. Co-I Dan Scolnic (Duke University) is co-PI of the Roman SN-PIT with expertise in SN Ia systematic uncertainties across Pan-STARRS, DES, LSST, and Roman, and will contribute to the cosmological parameter analysis. Co-I Ryan Foley (UC Santa Cruz) leads the Foundation Supernova Survey, Young Supernova Experiment, and Swope Supernova Survey, and will contribute to optical photometry and SN Ia cosmology. Co-Is Rebekah Hounsell (UMBC/NASA GSFC) and Rick Kessler (University of Chicago), both co-PIs of the Roman SN-PIT, will assess the impact of the host-subtracted SIRAH photometry on Roman SN Ia survey strategy and pipeline development. Co-I Adam Riess (JHU/STScI) leads the SH0ES H0 program and is a Roman SN-PIT collaborator, and will contribute to the SIRAH NIR H0 analysis. Co-I Suhail Dhawan (University of Birmingham) works on NIR SN Ia distance measurements and H0 inference, and is co-author of the cross-calibration work motivating this proposal. Co-I Chris Burns (Carnegie Observatories) developed the SNooPy NIR SN Ia light-curve fitter and will lead the light-curve fitting and distance analysis. Co-I Kaisey Mandel (Cambridge) works on hierarchical Bayesian SN Ia distance modeling with BayeSN, and will contribute to the probabilistic distance inference from the host-subtracted photometry. Co-I David Jones (IfA Hawaii; Roman SN-PIT Characterization co-lead) has expertise in SN Ia host-galaxy characterization and NIR cosmological analyses, and will lead the host-galaxy analysis. Co-I Lluis Galbany (ICE-CSIC/IEEC) is a member of the Roman SN-PIT with expertise in SN Ia environments and NIR H0 measurements, and will contribute to the host and environment analysis. Co-I Gautham Narayan (University of Illinois) has expertise in SN Ia photometric calibration and machine-learning methods for transients, and will assist with calibration cross-checks and photometric pipeline validation. Co-I Justin Pierel (STScI/NASA GSFC) has expertise in WFC3/IR image subtraction and HST SN Ia programs, and will contribute to the image-subtraction methodology. Co-Is Armin Rest (STScI), Alex Filippenko (UC Berkeley), Peter Garnavich (Notre Dame), Steve Rodney (University of South Carolina), and Renee Hlozek (Toronto) bring expertise in HST transient programs, SN Ia optical and NIR observations, and multi-probe cosmological constraints. Undergraduate student Tanmay Raswant (Rutgers) will assist with photometric analysis and cosmological parameter estimation. Collectively, the team has used hundreds of HST orbits with WFC3/IR, leads or contributes to every major active SN Ia cosmology program, and has published hundreds of refereed papers on SN Ia physics and cosmology. Stellar Physics and Stellar Types Galaxies 0 false false false false false true false SUPPORTED GALAXY SPIRAL YES J2000 J2000 GALAXY DISK YES J2000 J2000 GALAXY SPIRAL YES J2000 J2000 GALAXY SPIRAL YES J2000 J2000 GALAXY SPIRAL YES J2000 J2000 GALAXY SPIRAL YES J2000 J2000 GALAXY SPIRAL YES J2000 J2000 GALAXY SPIRAL YES J2000 J2000 GALAXY ELLIPTICAL YES J2000 J2000 GALAXY SPIRAL J2000 J2000 GALAXY SPIRAL YES J2000 J2000 GALAXY SPIRAL YES J2000 J2000 GALAXY SPIRAL YES J2000 J2000 GALAXY SPIRAL YES J2000 J2000 WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W WFC3/IR Imaging No No F098M WFC3/IR Imaging No No F110W WFC3/IR Imaging No No F125W WFC3/IR Imaging No No F140W WFC3/IR Imaging No No F160W 1787076827542 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "01" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 13:13:47.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1096816 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "01" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2710 :al-overhead-at-end 0 :internal-dur-at-end 690 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3026 :pcs-gap 0 ) false 1 0 1787076828198 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "02" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 13:13:48.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1114224 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "02" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2760 :al-overhead-at-end 0 :internal-dur-at-end 709 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3064 :pcs-gap 0 ) true 1 0 1787076828877 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "03" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 13:13:48.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "03" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2976 :pcs-gap 0 ) true 1 0 1787077041772 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "04" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 13:17:21.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "04" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2987 :pcs-gap 0 ) false 1 0 1787077873668 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "05" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 13:31:13.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "05" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2977 :pcs-gap 0 ) true 1 0 1787080346435 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "06" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 14:12:26.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "06" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2974 :pcs-gap 0 ) true 1 0 1787078487659 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "07" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 13:41:27.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "07" :obset-id "07" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "07" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) true 1 0 1787078637854 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "08" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 13:43:57.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "08" :obset-id "08" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "08" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3001 :pcs-gap 0 ) true 1 0 1787078962120 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "09" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 13:49:22.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1131616 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "09" :obset-id "09" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "09" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2810 :al-overhead-at-end 0 :internal-dur-at-end 690 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3121 :pcs-gap 0 ) true 1 0 1787079176566 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "10" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 13:52:56.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "10" :obset-id "10" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "10" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2976 :pcs-gap 0 ) true 1 0 1787079442351 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "11" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 13:57:22.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "11" :obset-id "11" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "11" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2979 :pcs-gap 0 ) false 1 0 1787079620836 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "12" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 14:00:20.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "12" :obset-id "12" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "12" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2983 :pcs-gap 0 ) true 1 0 1787079776233 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "13" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 14:02:56.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "13" :obset-id "13" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "13" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2977 :pcs-gap 0 ) false 1 0 1787079932552 The scheduling data was generated by CASM 34.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 18377 :visit-id "14" :proposal-version -1 :trans-version "20260618" :date "18-Aug-2026 14:05:32.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 1 :saa-model "30" :si-bright-earth-limb-angle 20.0 :data-volume 1079408 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 18377 :visit-id "14" :obset-id "14" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 18377 :visit-id "14" :orbit-number 1 :pcs-time 301 :si-vis-utilization 2660 :al-overhead-at-end 0 :internal-dur-at-end 671 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 2977 :pcs-gap 0 ) true 1 0