Sham 2 - Geometric Cal From: SMTP%"MURCHIE@s1pvx9.jhuapl.edu" 13-DEC-1996 14:42:29.25 To: ANN CC: Subj: here it is Date: Fri, 13 Dec 1996 14:41:33 -0500 (EST) From: MURCHIE@s1pvx9.jhuapl.edu To: ann@cuspif.tn.cornell.edu Message-Id: <961213144133.21c01358@s1pvx9.jhuapl.edu> Subject: here it is 1) Author / phone Scott Murchie / 301-953-6235 2) Priority High 3) Submittal Date 4) Execution Window 5) SDC Data Rqd Date flexible 6) Recorder required 53 Mb 7) Request Description: Shamtilly revision 8) Critical event? yes 9) Similar previous event? no 10) Special instructions see below Main purpose: - calibrate spacecraft maneuvering for Mathilde - test plan for coadding Mathilde opnav images - verify knowledege of MSI boresight Additional results w/o extra maneuvering: - additional data on filter wheel behavior - further data on imager characteristics needed for Mathilde opnav and image acquisition (point spread function of clear filter; distortion through color filters) - fuctionality of some image compression software Details of plan (developed by G. Heyler, A. Harch, S.E. Hawkins, S. Murchie) TIMELINE (T1=Instrument Power-on + 5.5 hours) = t0 = 96/269/1700Z = -103057200 UT = -103057138 TDT T1 - t0 - Slew to dark sky region: RA = 210.0 deg (14h0m) Dec = 17.833 deg (17d50m) - Allow settling time before next image sequence. T2 - t0+570 - Acquire 2 images of dark sky, filter 7, 10 and 999 ms exposures. Fast + DPCM compression. MSI SEQ 1 T3 - t0+600 - Slew to Arcturus: RA = 213.925 deg (14h15.7m) Dec = 19.183 deg (19d11m) - When slew is complete, allow adequate settling time before the following imaging. T4 - t0+990 - Acquire 8 20-ms exposures, filter 0, 1 second apart. Fast + DPCM compression. MSI SEQ 2 T4.0.1 - t0+1170 - Acquire 1 20-ms exposure, filter 0. Rice + DPCM compression. MSI SEQ 3 T4.1 - t0+1200 - Begin roll around MSI boresight. T4.2 - t0+1300 - Acquire 5 20-ms exposures, filter 0, 110 sec apart MSI SEQ 4 T5 - t0+1800 - Begin practice Mathilde slewing - Acquire the following sets of images at the following specified times. T6 - t0+2700 - Acquire 8 999 ms exposures, filter 0, 1 sec apart. No time for compression. MSI SEQ 5 T7 - t0+2755 - Acquire 8 999 ms exposures, filter 0, 1 sec apart. No time for compression. MSI SEQ 5 T8 - t0+2821 - Acquire 8 999 ms exposures, filter 0, 1 sec apart. Fast + DPCM compression. MSI SEQ 6 T8.1 - t0+3800 - Slew to Eta Carinae, allow settling time. Eta Car's sky position: RA = 161.275 (10h45.1m) Dec = -59.683 (59d41m) T9 - t0+4200 Acquire 8 999 ms exposures, filter 0, 1 sec apart. MSI SEQ 7 - Wait 3 minutes until t0+4380, acquire 4 999-ms exposures, filter 1, 1 sec apart. MSI SEQ 8 - Wait 3 minutes until t0+4560, acquire 4 999-ms exposures, filter 5, 1 sec apart. MSI SEQ 9 - Wait 3 minutes, until t0+4740, acquire 4 999-ms exposures, filter 3, 1 sec apart. MSI SEQ 10 IMAGE DEFINITIONS # # # Dark Frames -- Execute 5.5 hrs after instrument power-on. # 10 and 999 ms exposure times, filter 7, # FAST+DPCM compression. # CMDLOAD SS_DATA_LOAD 30 MSI CMD MS_DIA_SEQ 1 2 NONE 1 NONE ON FAST 16 MAN \ 10 999 0 0 0 0 0 0 7 7 0 0 0 0 0 0 # # # Eight 20-ms exposures through filter 0, FAST+DPCM # compression. For use at Arcturus, with star at # best-known boresight of MSI: # CMDLOAD SS_DATA_LOAD 30 MSI CMD MS_DIA_SEQ 2 8 NONE 1 NONE ON FAST 16 MAN \ 20 20 20 20 20 20 20 20 0 0 0 0 0 0 0 0 # # # One 20 ms exposure through filter 0 using RICE+DPCM # compression. # CMDLOAD SS_DATA_LOAD 30 MSI CMD MS_DIA_SEQ 3 1 NONE 1 NONE ON RICE 16 MAN \ 20 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 # # # Five 20 ms exposures, filter 0, 110 sec apart. This is for # use during the roll around MSI boresight. # CMDLOAD SS_DATA_LOAD 30 MSI CMD MS_DIA_SEQ 4 5 NONE 110 NONE ON FAST 16 MAN \ 20 20 20 20 20 0 0 0 0 0 0 0 0 0 0 0 # # # Eight 999-ms exposures, 1 sec apart, filter 0, no compression. # This is for use at the first of three targets during the slew to # Eta Carinae; insufficient time for image compression. # CMDLOAD SS_DATA_LOAD 30 MSI CMD MS_DIA_SEQ 5 8 NONE 1 NONE OFF NONE 16 MAN \ 999 999 999 999 999 999 999 999 0 0 0 0 0 0 0 0 # # # Eight 999-ms exposures, 1 sec apart, filter 0, # FAST+DPCM compression. This is for use TWICE (at the # second and third of three targets) during the slew # to Eta Carinae; enough time for compression. # CMDLOAD SS_DATA_LOAD 30 MSI CMD MS_DIA_SEQ 6 8 NONE 1 NONE ON FAST 16 MAN \ 999 999 999 999 999 999 999 999 0 0 0 0 0 0 0 0 # # # Eight 999-ms exposures through filter 0, 1 sec apart, # FAST+DPCM compression. For use at star cluster. # CMDLOAD SS_DATA_LOAD 30 MSI CMD MS_DIA_SEQ 7 8 NONE 1 NONE ON FAST 16 MAN \ 999 999 999 999 999 999 999 999 0 0 0 0 0 0 0 0 # # # Four 999-ms exposures through filter 1, 1 sec # apart. Fast + DPCM compression. For use at star cluster. # CMDLOAD SS_DATA_LOAD 30 MSI CMD MS_DIA_SEQ 8 4 NONE 1 NONE ON FAST 16 MAN \ 999 999 999 999 0 0 0 0 1 1 1 1 0 0 0 0 # # # Four 999-ms exposures through filter 5, 1 sec # apart. Fast + DPCM compression. For use at star cluster. # CMDLOAD SS_DATA_LOAD 30 MSI CMD MS_DIA_SEQ 9 4 NONE 1 NONE ON FAST 16 MAN \ 999 999 999 999 0 0 0 0 5 5 5 5 0 0 0 0 # # # Four 999-ms exposures through filter 3, 1 sec # apart. Fast + DPCM compression. For use at star cluster. # CMDLOAD SS_DATA_LOAD 30 MSI CMD MS_DIA_SEQ 10 4 NONE 1 NONE ON FAST 16 MAN \ 999 999 999 999 0 0 0 0 3 3 3 3 0 0 0 0 # # # Entire observation: (2+8+1+5+8+2*8+8+4+4+4)=60 frames # # # #****************************************************************** # SEQUENCE TEMPLATE * ##***************************************************************** # * # Image Sequence ID = 1-30 * # Images in Sequence = 1-8 * # Repeating Sequence = NONE * # Time Between Images = 1-255 (sec) * # Lossy Table = NONE/TABLE1-TABLE7 * # Differential PCM = ON/OFF * # Lossless Algorithmn = NONE/FAST/RICE * # Pixels per Block = 1-16 * # Exposure Mode = MAN/AUTO * # * # Image #1 Exposure Time = 1 ms Filter Wheel Position = 0 * # Image #2 Exposure Time = 10 ms Filter Wheel Position = 1 * # Image #3 Exposure Time = 50 ms Filter Wheel Position = 2 * # Image #4 Exposure Time = 100 ms Filter Wheel Position = 3 * # Image #5 Exposure Time = 500 ms Filter Wheel Position = 4 * # Image #6 Exposure Time = 750 ms Filter Wheel Position = 5 * # Image #7 Exposure Time = 900 ms Filter Wheel Position = 6 * # Image #8 Exposure Time = 999 ms Filter Wheel Position = 7 * # * #****************************************************************** # # CMDLOAD SS_DATA_LOAD 30 MSI # CMD MS_DIA_SEQ 1 8 NONE 1 NONE ON FAST 16 MAN \ # 1 10 50 100 500 750 900 999 0 1 2 3 4 5 6 7 # #****************************************************************** # # Scott, Things you probably needed early today, but I didn't get in until noon. Sorry. 1. The current location for Pleaides pointing is probably best if you are only going to use one position. But I only find 11 stars in the FOV (I checked down to mag 13) and they are a bit clumped so they don't cover to the edges of the FOV as you wanted. Probably multiple positions would be best, though it's probably too late for that. I'm nervous about what you said Dunham said (that there are 20 or more stars in this cluster). They are not showing in this program (xephem). 2. Here's a list of the magnitudes of Pleaides stars: (2.8, 3.6, 3.7, 4.1, 4.3, 5.0, 5.4, 5.6, 5.7, 6.4). 3. Magnitudes and slew rates of the test stars during practice mathilde slews: 1) Musca alpha (2.6) rate is .32 - .35 deg/sec beta (3.0) (boresight rel. to stars) epsilon (4.1) zeta1 (5.7) zeta2 (5.1) 2) Dorado kappa (5.2) rate = 3.0 - 3.3 deg/s error! should read .3 - .33 !!! 4. In terms of Mathilde sequence, the AGU talk (which you have a copy of - poster stuff) is the best summary. I am working on something that summarizes signal levels etc. I'll send that along a soon as it's finished. In the mean time, if there is something you need to know asap call and ask me.