! File: 1408C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:18:05:31 coverpage: title_1: DARK NOISE MONITORING HRS-I10 proposal_for: SV/HRS pi_fname: DENNIS pi_mi: C. pi_lname: EBBETS pi_inst: BALL AEROSPACE SYS. GROUP pi_country: USA pi_phone: 303-939-5964 keywords_1: HRS, CALIBRATION, SCIENCE VERIFICATION hours_par: 50.67 hrs: Y ! end of coverpage abstract: line_1: SV test for routine monitoring of detector dark noise. line_3: Updated 8/24/89 to include HSP dark count in the GHRS dark count sequence line_4: definitions. (PStanley) ! ! end of abstract general_form_proposers: lname: EBBETS fname: D. mi: C. inst: BASG country: USA ! lname: BEAVER fname: ED inst: UCSD country: USA ! lname: SAVAGE fname: B. mi: D. inst: UNIV. OF WISCONSIN country: USA ! lname: BRANDT fname: J. mi: C. inst: LASP/UNIV. OF COLORADO country: USA ! lname: CARPENTER fname: K. mi: G. inst: NASA/GSFC country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: Engineering mode "Photoscan" can be used. An integration time of 10 line_2: seconds with 7 bins produces a readout every 70 seconds. 16 of these line_3: observations provides 18.7 minutes of dark count data. All deflection line_4: are 2048, 2048. Data quality check parameters will be adjusted during line_5: SV to minimize the dark count rate. If possible, parallel HSP line_6: observations will be made, but this should not restrict the running line_7: of frequent GHRS dark counts. ! question: 5 section: 1 line_1: OV-SV Prerequisites line_2: HRS-i5 Initial dark noise measurements - Proposal #1407 line_5: If possible these observations should be run once per day every day that line_6: detector high voltage is on. The exposure log sheet indicates 100 exposures line_7: during a nominal 150 day SV program. The precise number, and the intervals line_8: between them aare not really critical. line_12: Estimated observing time = 100 exposures x 18.6 minutes = line_13: 1687 minutes = 31.1 hours. line_15: SV Minimum Plan: lines 4-11 line_16: SV Delta Plan: lines 14-21 line_17: Guiding Tolerance: none - internal test only ! question: 5 section: 2 line_1: These are internal tests and do not require any special pointing of the line_2: telescope. They do not demand that HRS be prime instrument. It is hoped that line_3: HRS can be operated in a parallel mode, allowing these dark count monitors to line_4: be run very frequently. line_6: There is no carrousel motion. line_8: In order to cross-calibrate GHRS dark counts with HSP radiation line_9: monitoring, observations with both instruments should be run in line_10: in parallel whenever possible, under a variety of orbital conditions. line_11: This has been done in response to STScI request for supporting data for line_12: the HSP Radiation Monitoring OLT. If scheduling the HSP in parallel line_13: presents problems, the HSP darks should be dropped. ! question: 7 section: 1 line_1: Basically the same as for test HRS-i5, but with long term trend analysis and line_2: improvement of statistical accuracy as the main goals. ! !end of general form text general_form_address: lname: BEAVER fname: ED category: CON inst: UCDS addr_1: CASS city: LA JOLLA state: CA country: USA ! lname: CARPENTER fname: KENNETH category: CON inst: NASA/GSFC addr_1: CODE 681 city: GREENBELT state: MD zip: 20771 country: USA phone: 301-286-3453 ! lname: EBBETS fname: DENNIS mi: C. category: PI inst: BALL AEROSPACE SYS. GROUP addr_1: P.O. BOX 1062 FT-3 city: BOULDER state: CO zip: 80306 country: USA phone: 303-939-5964 ! lname: SAVAGE fname: BLAIR category: CON inst: UNIV. OF WISCONSIN addr_1: DEPT. OF ASTRONOMY city: MADISON state: WI zip: 53706 country: USA phone: 608-262-0309 ! ! end of general_form_address records ! No fixed target records found ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 sequence_1: DEFINE sequence_2: D1DARK targname: DARK config: HRS opmode: PHOTOSCAN aperture: NONE sp_element: SAFE1 num_exp: 16 time_per_exp: 70S priority: 1 param_1: TYPE=SHORT-Y, param_2: SPACING=0, param_3: X=2048, param_4: Y=2048, comment_1: STEP-TIME=10S. ! linenum: 2.000 sequence_1: DEFINE sequence_2: D2DARK targname: DARK config: HRS opmode: PHOTOSCAN aperture: NONE sp_element: SAFE2 num_exp: 16 time_per_exp: 70S priority: 1 param_1: TYPE=SHORT-Y,SPACING=0,X=2048,Y= param_2: 2048, comment_1: STEP-TIME=10S ! linenum: 4.000 sequence_1: USE sequence_2: D1DARK req_1: REPEAT 4 EVERY 5D +/- 2D req_2: FOR 9 MORE TIMES; ! linenum: 6.000 sequence_1: USE sequence_2: D2DARK req_1: REPEAT 6 EVERY 5D +/- 2D req_2: FOR 9 MORE TIMES; ! linenum: 8.000 sequence_1: USE sequence_2: D1DARK req_1: REPEAT 8 EVERY 5D +/- 2D req_2: FOR 9 MORE TIMES; comment_1: TAKE DARK COUNTS IN THE SAA. ! linenum: 10.000 sequence_1: USE sequence_2: D2DARK req_1: REPEAT 10 EVERY 5D +/- 2D req_2: FOR 9 MORE TIMES; comment_1: TAKE DARK COUNTS IN THE SAA. ! linenum: 14.000 sequence_1: USE sequence_2: D1DARK req_1: REPEAT 14 EVERY 5D +/- 2D req_2: FOR 14 MORE TIMES; req_3: COND IF SV DELTA PLAN ! linenum: 16.000 sequence_1: USE sequence_2: D2DARK req_1: REPEAT 16 EVERY 5D +/- 2D req_2: FOR 14 MORE TIMES; req_3: COND IF SV DELTA PLAN ! linenum: 18.000 sequence_1: USE sequence_2: D1DARK req_1: REPEAT 18 EVERY 5D +/- 2D req_2: FOR 14 MORE TIMES; req_3: COND IF SV DELTA PLAN comment_1: TAKE DARK COUNTS IN THE SAA. ! linenum: 20.000 sequence_1: USE sequence_2: D2DARK req_1: REPEAT 20 EVERY 5D +/- 2D req_2: FOR 14 MORE TIMES; req_3: COND IF SV DELTA PLAN comment_1: TAKE DARK COUNTS IN THE SAA. ! ! end of exposure logsheet ! No scan data records found