This is a resubmission of proposal #174 because we caught a few typos. This is a second resubmission to correct another typo -1783458880 Assigned ID: 174 ----- Attempting Submission 1 (Wed Apr 05 21:42:30 GMT 2017) ----- HST Phase I Proposal 174 (cyglp17.apt) successfully submitted. Receipt: # 174-1 ----- Attempting Submission 2 (Thu Apr 06 19:45:44 GMT 2017) ----- HST Phase I Proposal 174 (cyglp17.apt) successfully submitted. Receipt: # 174-2 ----- Attempting Submission 3 (Fri Apr 07 19:21:11 GMT 2017) ----- HST Phase I Proposal 174 (cyglp17.apt) successfully submitted. Receipt: # 174-3 POS TARG & PATTERN should be used carefully with WFC3 quad filters to avoid placing the target on the vignetted part of the field of view or moving it to another quadrant. POS TARG & PATTERN should be used carefully with WFC3 quad filters to avoid placing the target on the vignetted part of the field of view or moving it to another quadrant. POS TARG & PATTERN should be used carefully with WFC3 quad filters to avoid placing the target on the vignetted part of the field of view or moving it to another quadrant. POS TARG & PATTERN should be used carefully with WFC3 quad filters to avoid placing the target on the vignetted part of the field of view or moving it to another quadrant. POS TARG & PATTERN should be used carefully with WFC3 quad filters to avoid placing the target on the vignetted part of the field of view or moving it to another quadrant. POS TARG & PATTERN should be used carefully with WFC3 quad filters to avoid placing the target on the vignetted part of the field of view or moving it to another quadrant. POS TARG & PATTERN should be used carefully with WFC3 quad filters to avoid placing the target on the vignetted part of the field of view or moving it to another quadrant. POS TARG & PATTERN should be used carefully with WFC3 quad filters to avoid placing the target on the vignetted part of the field of view or moving it to another quadrant. The warnings all say that one must be careful with dithers when using the QUAD filters. The patterns only cover a few arcsec, and we have checked them. -1577146792 ----- Attempting Submission 1 (Wed Jul 19 17:37:41 GMT 2017) ----- All the warnings pertain to using dither patterns with QUAD filters. The dithers we have chosen to take care of hot pixels are only a few arcsec, and we do not believe that they present a problem. Instabilities and Turbulence in a Cygnus Loop Shock Front The [O III] emission in old supernova remnants takes the form of long, crisp filaments, while the H alpha and [S II] emission is frothy and clumpy. That indicates that instabilities in cooling gas behind the shock produce strong turbulence. This very rapid generation of turbulence is not considered in the picture of global turbulence in the ISM, and it amplifies magnetic fields and boosts the energy of cosmic rays. It can also affect the overall emission spectrum of the shocked gas in ways not considered in the 1D models used to interpret spectra of SNRs, HH objects and AGN. We propose to quantify and understand the mechanism for generating turbulence by obtaining narrow band WFC3 images and STIS UV and optical spectra to complement an existing Heritage mosaic of WFC3 images of the western Cygnus Loop (Veil Nebula). This is a unique opportunity to fully characterize the post-shock flow in a supernova remnant shock because the Cygnus Loop is nearby and nearly unreddened. It is crucial both for the understanding of turbulence and for interpreting the spectra of unresolved shocks in more distant SNRs, in AGN and in HH objects. The program will observe extended emission from the Cygnus Loop supernova remnant in a region previously covered by a Hubble Heritage mosaic of H alpha, [O III] and [S II] images. It includes 9 orbits of WFC3 imaging and 6 orbits of STIS spectroscopy. We ask for WFC3 images in parallel with the spectroscopy. These parallel images fall on another part of the Heritage image but use different filters. The program includes full images in H alpha (narrow), [O I] and [O II], and quad images in each of the [S II] lines, [O III] 4363 and [Ne IV] 2425. The spectra will be low resolution spectra in FUV, NUV, red and blue optical, plus higher resolution red and blue optical spectra. Seven of the imaging orbits are ~2700 seconds of exposure for the full orbit. Four of those use Quad filters, and the other three use regular filters. The closer they are to the same orientation, the better, but this is not critical within the ORIENT window given in the proposal. Six of the orbits use STIS in the long slit (52") mode, although different slit widths are used as needed to improve S/N. It is important to have the SAME ORIENT for all STIS observations in order to cover the same field of view, but that value can be anywhere within the ORIENT range given in the proposal. The aim of the proposal is to study the development of turbulence in the cooling gas behind the shock front. The [O III] morphology is much different than the H alpha and [S II] morphology. The new images will add density and temperature information, along with images in higher and lower ionization states, to the Heritage images. The spectra will provide velocity centroids in high and low ionization lines, along with diagnostics for peak temperature and elemental abundances (grain destruction and cooling rates). We hope to be able to discriminate among the possible causes for the clumpy structure at low temperatures; cooling instabilities, the thin shell instability or pre-existing density inhomogeneities, and to elucidate the role of magnetic fields. The plan is Target Inst Element Parallel Exposures Visit 1 WFC3-1 WFC3 F631N WFC3-1 WFC3 F373N WFC3-1 WFC3 F656N Visit 2 SII-2 WFC3 FQ672N, FQ674N SII-4 WFC3 FQ672N, FQ674N Visit 3 Offset star STIS-1 STIS G140L WFC3 F631N STIS-1 STIS G230L WFC3 F373N STIS-1 STIS G430L WFC3 F656N Visit 4 Offset star STIS-1 STIS G750L WFC3 FQ437N STIS-1 STIS G430M WFC3 FQ672N, FQ674N STIS-1 STIS G750M WFC3 FQ243N Visit 5 QUAD-1 WFC3 FQ437N QUAD-2 WFC3 FQ437N Visit 6 QUAD-1 WFC3 FQ243N QUAD-2 WFC3 FQ243N Targets S2 and S4 are chosen so that we will get both filters covering 3 positions across the filaments. Both the FQ672N and FQ674N quadrants (amplifiers B and D) should be read out.for each exposure. Stellar Physics 6 false true false false false false SUPPORTED ISM SHOCK FRONT SNR YES J2000 J2000 O III 5007 flux is 0.0035 photons/(cm2 s square arcsec) ISM SHOCK FRONT SNR YES J2000 J2000 O III 5007 flux is 0.0035 photons/(cm2 s square arcsecond) ISM SHOCK FRONT SNR YES J2000 J2000 O III 5007 flux is 0.0035 photons/(cm2 s square arcsecond) ISM SHOCK FRONT SNR YES J2000 J2000 O III 5007 flux is 0.0035 photons/(cm2 s square arcsecond) ISM SHOCK FRONT SNR YES J2000 J2000 O III 5007 flux is 0.0035 photons/(cm2 s square arcsecond) ISM SHOCK FRONT SNR YES J2000 J2000 O III 5007 flux is 0.0035 photons/(cm2 s square arcsecond) STAR A0-A3 III-I NO J2000 STIS/FUV-MAMA Spectroscopic No No G140L 1425 STIS/NUV-MAMA Spectroscopic No No G230L 2376 STIS/CCD Spectroscopic No No G430M 4961 STIS/CCD Spectroscopic No No G750M 6581 WFC3/UVIS Imaging No No F373N WFC3/UVIS Imaging No No F631N WFC3/UVIS Imaging No No F658N WFC3/UVIS Imaging No No FQ243N WFC3/UVIS Imaging No No FQ436N WFC3/UVIS Imaging No No FQ243N WFC3/UVIS Imaging No No FQ436N WFC3/UVIS Imaging No No FQ672N WFC3/UVIS Imaging No No FQ674N WFC3/UVIS Imaging No No FQ672N WFC3/UVIS Imaging No No FQ674N WFC3/UVIS Imaging No No F373N WFC3/UVIS Imaging No No FQ243N WFC3/UVIS Imaging No No FQ436N WFC3/UVIS Imaging No No FQ672N WFC3/UVIS Imaging No No FQ674N STIS/CCD Spectroscopic No No G430L 4300 STIS/CCD Spectroscopic No No G750L 7751 WFC3/UVIS Imaging No No F656N POS-TARG DITHER 1.607 LINE false false 3 86.7 WFC3-UVIS-DITHER-LINE-3PT 1 false POS-TARG DITHER 0.135 LINE false false 3 46.84 WFC3-UVIS-DITHER-LINE-3PT 2 false POS-TARG DITHER 0.145 LINE false false 2 46.84 WFC3-UVIS-DITHER-LINE 3 false The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. /home/raymond/prop/HST2017/OP-cache/cyglp17_WPBfix3-v01.xml Three orbits to do full size WFC3 images; using a 3-pattern with steps to cover the chip gap instead of CR-SPLIT. (Tic-Visit :proposal-id 15285 :visit-id "01" :proposal-version -1 :trans-version "20170613" :date "18-Jul-2017 22:55:26.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2598704 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15285 :visit-id "01" :obset-id "01" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15285 :visit-id "01" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2905 :al-overhead-at-end 122 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15285 :visit-id "01" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3016 :al-overhead-at-end 122 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15285 :visit-id "01" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3016 :al-overhead-at-end 122 :internal-dur-at-end 352 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) true 3 0 /home/raymond/prop/HST2017/OP-cache/cyglp17_WPBfix3-v02.xml The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. 4 exposures in 2 orbits with the S II quad filters (Tic-Visit :proposal-id 15285 :visit-id "02" :proposal-version -1 :trans-version "20170613" :date "18-Jul-2017 22:55:33.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2310000 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15285 :visit-id "02" :obset-id "02" :pcs-mode "FGS" ) (Tic-Obset :proposal-id 15285 :visit-id "02" :obset-id "A2" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15285 :visit-id "02" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2905 :al-overhead-at-end 123 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15285 :visit-id "02" :orbit-number 2 :pcs-time 333 :si-vis-utilization 2905 :al-overhead-at-end 123 :internal-dur-at-end 668 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) true 2 0 Both FQ672N and FQ674 should be read out (readout amplifiers D and B). UVIS-QUAD so that FQ762N and FQ674N at positions S2 and S4 will cover the same regions. Both FQ672N and FQ674N should be read out (readout amplifiers D and B). UVIS-QUAD so that FQ762N and FQ674N at positions S2 and S4 will cover the same regions Both FQ672N and FQ674N should be read out (readout amplifiers B and D). UVIS-QUAD so that FQ762N and FQ674N at positions S2 and S4 will cover the same regions Both FQ672N and FQ674N should be read out (readout amplifiers B and D). UVIS-QUAD so that FQ762N and FQ674N at positions S2 and S4 will cover the same regions /home/raymond/prop/HST2017/OP-cache/cyglp17_WPBfix3-v03.xml The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. This visit contains low resolution spectra with G140L, G230L and G430L, and there are 3 parallel observations with WFC3. (Tic-Visit :proposal-id 15285 :visit-id "03" :proposal-version -1 :trans-version "20170613" :date "18-Jul-2017 22:55:40.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 2872160 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15285 :visit-id "03" :obset-id "03" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15285 :visit-id "03" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2906 :al-overhead-at-end 0 :internal-dur-at-end 113 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15285 :visit-id "03" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3016 :al-overhead-at-end 106 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15285 :visit-id "03" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3018 :al-overhead-at-end 75 :internal-dur-at-end 1047 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) true 3 0 /home/raymond/prop/HST2017/OP-cache/cyglp17_WPBfix3-v04.xml The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15285 :visit-id "04" :proposal-version -1 :trans-version "20170613" :date "18-Jul-2017 22:54:54.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 3 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 3200752 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15285 :visit-id "04" :obset-id "04" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15285 :visit-id "04" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2905 :al-overhead-at-end 72 :internal-dur-at-end 553 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15285 :visit-id "04" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3018 :al-overhead-at-end 75 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15285 :visit-id "04" :orbit-number 3 :pcs-time 222 :si-vis-utilization 3014 :al-overhead-at-end 123 :internal-dur-at-end 692 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) true 3 0 Read out both S II quad filters (amplifiers B and D) Read out both S II quad filters (amplifiers B and D) /home/raymond/prop/HST2017/OP-cache/cyglp17_WPBfix3-v05.xml The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15285 :visit-id "05" :proposal-version -1 :trans-version "20170613" :date "18-Jul-2017 22:55:50.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 1732464 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15285 :visit-id "05" :obset-id "05" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15285 :visit-id "05" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2906 :al-overhead-at-end 123 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15285 :visit-id "05" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3017 :al-overhead-at-end 123 :internal-dur-at-end 668 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) true 2 0 FQ437N to avoid Balmer line FQ437N to avoid Balmer line /home/raymond/prop/HST2017/OP-cache/cyglp17_WPBfix3-v06.xml The scheduling data was generated by CASM 25.2. CASM was run in Phase II mode. (Tic-Visit :proposal-id 15285 :visit-id "06" :proposal-version -1 :trans-version "20170613" :date "18-Jul-2017 22:55:55.0" :trans-errors '(:WARNINGS 0 :ERRORS 0 :HEALTH-AND-SAFETY 0 :FATAL-ERRORS 0 :CONTINUABLE-FATALS 0) :number-of-orbits 2 :saa-model "29" :si-bright-earth-limb-angle 20.0 :data-volume 1732464 :tdrss-contact-duration 0 :coron NIL ) (Tic-Obset :proposal-id 15285 :visit-id "06" :obset-id "06" :pcs-mode "FGS" ) (Tic-Orbit :proposal-id 15285 :visit-id "06" :orbit-number 1 :pcs-time 333 :si-vis-utilization 2906 :al-overhead-at-end 123 :internal-dur-at-end 0 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) (Tic-Orbit :proposal-id 15285 :visit-id "06" :orbit-number 2 :pcs-time 222 :si-vis-utilization 3017 :al-overhead-at-end 123 :internal-dur-at-end 668 :dark-offset NIL :dark-utilization 0 :max-dark-utilization 1920 :low-sky "N" :pcs-visibility 3240 :pcs-gap 0 ) true 2 0