! File: 1460C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:19:27:56 coverpage: title_1: HRS PHOTOCATHODE TEST proposal_for: OV/HRS pi_fname: JOHN pi_lname: TROELTZSCH pi_inst: BALL AEROSPACE SYSTEMS DIVISION pi_country: USA pi_phone: 408-756-8760 keywords_1: ORBITAL VERIFICATION hours_par: 0.90 hrs: X pi_position: OV TEST ENGINEER ! end of coverpage abstract: line_1: This test defines the procedure to map both photocathodes and scan all eight line_2: of the mask edges. The results will be used to update the deflection mapping line_3: function coefficients. The test will also provide data for focus line_4: determination, and edge location. This test is included in HRS Standard High line_5: Voltage Turn On, and does not need to be scheduled separately in the OV line_6: timeline. It will be used if problems are detected during high voltage turn on line_7: or if additional mapping function data is needed. The results of this test line_8: will be used to update the HRS data reduction database. ! ! end of abstract general_form_proposers: lname: KRUEGER fname: VERN inst: GODDARD SPACE FLIGHT CENTER country: USA ! lname: GARNER fname: HARRY inst: BALL AEROSPACE SYSTEMS DIVISION country: USA ! lname: EBBETS fname: DENNIS inst: BALL AEROSPACE SYSTEMS DIVISION country: USA ! lname: WILLIAMS fname: BRUCE inst: BALL AEROSPACE SYSTEMS DIVISION country: USA ! lname: TROELTZSCH fname: JOHN inst: BALL AEROSPACE SYSTEMS DIVISION country: USA ! ! end of general_form_proposers block general_form_text: question: 2 section: 1 line_1: This test will provide results to calibrate the deflection mapping function, line_2: measure deflection step size, and calibrate the diode to diode response line_3: function. It will also identify bad diodes and photocathode blemishes. ! question: 3 section: 1 line_1: The flat field lamp is used to map all four edges of the photocathode mask. line_2: The left and right edges will be scanned using the sequence MSKSCN, which line_3: gathers 28 lines of science data. The data is collected at 4 X locations for 7 line_4: values of Y. The top and bottom edges will be scanned using TOPSCN and BOTSCN, line_5: which gather 30 lines of data each. All of the scans involve collecting line_6: science data while stepping the diode array accross the edge of the line_7: photocathode mask. line_9: The photocathode map will use the flat field lamp to map the full height of the line_10: photocathode. The sequence PMAP requires 33 observations starting at Y=256, and line_11: incrementing by 112 deflection steps in Y for each observation. The line_12: observations will use 7 substep bins, and an integration time of 1 second. Each line_13: substep bin will be separated by 16 deflection steps in Y. ! question: 3 section: 2 line_1: CONTINUATIONS OF COMMENTS FROM EXPOSURE LOGSHEET: line_3: 1. BETWEEN LINES. STARTING Y DEFLECTION (INITIAL Y DEFLECTION FOR BIN 1, line_4: OBSERVATION 1) IS CHOSEN SO THAT THE 210 LINES OF DATA SCAN ACROSS THE TOP line_5: EDGE OF THE PHOTOCATHODE MASK. THE INITIAL Y HAS A NOMINAL VALUE OF Y line_6: (SUB) 0 = 260 FOR D1 AND Y (SUB) 0 = 138 FOR D2. THE INITAL Y DEFLECTIONS line_7: FOR EACH OF THE 30 OBSERVATIONS IS GIVE BY Y= Y(SUB)0 + N * 7, N=0, 29. line_8: THE EDGES ARE EXPECTED TO BE NEAR Y=365 (D1), Y=342 (D2). line_9: 2. OBSERVATIONS WILL BE Y = Y (SUB) 0 + N * 7, N=0, 29. THE EDGES ARE line_10: EXPECTED TO BE FOUND NEAR Y = 3762 FOR D1 AND 3696 FOR D2. line_12: 3. DEFLECTION IS INCREMENTED BY 40 DEFLECTION STEPS (5 DIODE WIDTHS) BETWEEN line_13: BINS. WHEN SCANNING THE LEFT SIDE OF THE MASK THE INITIAL X DEFLECTIONS line_14: ARE X (SUB) 0 = 1260, 1540. WHEN SCANNING THE RIGHT HAND SIDE THE INITIAL line_15: X DEFLECTIONS ARE X (SUB) 0 2330, 2610. EACH PAIR OF LEFT AND RIGHT EDGE line_16: SCANS IS DONE AT 7 Y DEFLECTIONS, Y=500, 1000, 1500, 2000, 2500, 3000, line_17: 3500. THE SAME TEST SEQUENCE IS USED FOR BOTH DETECTORS. line_19: 4. DEFLECTION STEPS BETWEEN BINS. THE STARTING Y DEFLECTION (INITIAL Y line_20: DEFLECTION FOR BIN 1, OBSERVATION 1) IS Y=256. THE INITIAL Y DEFLECTIONS line_21: FOR THE 33 OBSERVATIONS WILL BE Y = 256 + N * 112, N=0, 32. THE MAP IS line_22: THE SAME FOR BOTH DETECTORS. ! question: 5 section: 1 line_1: During OV this test does not need to be scheduled, but should be available to line_2: trouble shoot photocathode and detector problems if they occur. line_4: Prerequisites: line_6: 1. HRS High Voltage Turn On must have been completed. ! question: 6 section: 1 line_1: None. ! question: 7 section: 1 line_1: 1. The science data will be reduced using standard IDT routines to generate line_2: mapping function coefficients for the software database. line_4: 2. The photocathode maps will be analyzed for bad diodes and photocathode line_5: blemishes. line_7: 3. The edge scans will be analyzed for image sharpness. ! question: 8 section: 1 line_1: This is an internal test and does not require any special pointing of the line_2: telescope. This test does not require the HRS to be the prime instrument. line_4: There is no target list with this proposal. ! question: 10 section: 1 line_1: 1. Test design support line_2: 2. Test execution support team line_3: 3. Data analysis facilities line_4: 4. Data analysis personnel ! !end of general form text general_form_address: lname: EBBETS fname: DENNIS category: CON inst: BALL AEROSPACE addr_1: P.O. BOX 1062 city: BOULDER state: CO zip: 80306 country: USE phone: 303-939-5964 ! lname: WILLIAMS fname: BRUCE category: CON inst: BALL AEROSPACE addr_1: P.O. BOX 1062 city: BOULDER state: CO zip: 80306 country: USA phone: 303-949-4816 ! lname: KRUEGER fname: VERN category: CON inst: GODDARD SPACE FLIGHT CENTER addr_1: GSFC CODE 683 city: GREENBELT state: MD zip: 20771 country: USA phone: 301-344-5004 ! lname: TROELTZSCH fname: JOHN category: PI inst: BALL AEROSPACE SYSTEMS DIVISION addr_1: P.O. BOX 1062 city: BOULDER state: CO zip: 80306 country: USA phone: 303-939-4816 ! ! 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: TOPSCN targname: INTFLAT config: HRS opmode: IMAGE aperture: # num_exp: 1 time_per_exp: 210S s_to_n: 50 priority: 1 param_1: STEP-TIME=1, param_2: STEP-PATT=TBD-PII comment_1: EACH OF THE 30 EXPOSURES CONTAINS 7 comment_2: SUBSTEP BINS, GIVING 210 LINE OF DATA comment_3: TOTAL. EACH LINE OF DATA HAS THE comment_4: SAME X DEFLECTION, 2048. THE Y comment_5: DEFLECTION INCREMENTS BY 1 STEP comment_6: (CONTINUED IN GENERAL TEXT, SECTION 3) ! linenum: 2.000 sequence_1: DEFINE sequence_2: BOTSCN targname: ^ config: ^ opmode: ^ aperture: ^ num_exp: ^ time_per_exp: ^ s_to_n: ^ priority: ^ param_1: ^ comment_1: THIS IS SIMILAR TO TOPSCN, BUT SCANS comment_2: ACROSS THE BOTTOM EDGE OF THE PHOTO- comment_3: CATHODE. THE STARTING Y DEFLECTIONS comment_4: WILL BE Y (SUB) 0 = 3657 FOR D1 AND comment_5: 3591 FOR D2. THE INITIAL Y comment_6: DEFLECTIONS FOR THE 30 (CONT.IN GF.3) ! linenum: 3.000 sequence_1: DEFINE sequence_2: MSKSCN targname: INTFLAT config: HRS opmode: IMAGE aperture: # num_exp: 1 time_per_exp: 196S s_to_n: 50 priority: 1 param_1: STEP-PATT=TBD-PII, param_2: STEP-TIME=1.0 comment_1: THIS DEFINES THE BASIC OBSERVATIONS comment_2: FOR THE MSKSCN TEST. IT CONSISTS OF comment_3: 2 OBSERVATIONS OF SEVEN SUBSTEP BINS comment_4: EACH. THE Y DEFLECITON IS CONSTANT comment_5: FOR ALL 14 INTEGRATIONS. THE X comment_6: (CONTINUED IN GENERAL TEXT, SECTION 3) ! linenum: 4.000 sequence_1: DEFINE sequence_2: PMAP targname: ^ config: ^ opmode: ^ aperture: ^ num_exp: 1 time_per_exp: 231S s_to_n: ^ priority: ^ param_1: ^ comment_1: EACH OF THE 33 OBSERVATIONS CONTAINS comment_2: 7 SUBSTEP BINS, GIVING 231 LINES OF comment_3: DATA. THE X DEFLECTION IS CONSTANT comment_4: AT X=2048 FOR ALL OBSERVATIONS. THE comment_5: Y DEFLECTION IS INCREMENTED BY 16 comment_6: (CONTINUED IN GENERAL TEXT, SECTION 3) ! linenum: 5.000 sequence_1: USE sequence_2: MSKSCN aperture: SAFE1 req_1: SEQ 5-7 NO GAP; comment_1: SIDE 1. ! linenum: 6.000 sequence_1: USE TOPSCN aperture: SAFE1 comment_1: SIDE 1. ! linenum: 7.000 sequence_1: USE BOTSCN aperture: SAFE1 comment_1: SIDE 1. ! linenum: 8.000 sequence_1: USE PMAP aperture: SAFE1 req_1: AFTER 7; comment_1: SIDE 1. ! linenum: 9.000 sequence_1: USE sequence_2: MSKSCN aperture: SAFE2 req_1: SEQ 9-11 NO GAP; req_2: AFTER 8; comment_1: SIDE 2. ! linenum: 10.000 sequence_1: USE TOPSCN aperture: SAFE2 comment_1: SIDE 2. ! linenum: 11.000 sequence_1: USE BOTSCN aperture: SAFE2 comment_1: SIDE 2. ! linenum: 12.000 sequence_1: USE PMAP aperture: SAFE2 req_1: AFTER 11; comment_1: SIDE 2. ! ! end of exposure logsheet ! No scan data records found