! File: 1431C.PROP ! Database: PEPDB ! Date: 16-FEB-1994:18:50:49 coverpage: title_1: WF/PC SV OBSERVATION SET #12: WF/PC CALIBRATION UV FLOOD TEST proposal_for: OV/WFC pi_title: PROF. pi_fname: JAMES pi_mi: A. pi_lname: WESTPHAL pi_inst: CALTECH pi_country: USA pi_phone: (818)356-4900 keywords_1: UV FLOOD time_crit: X pi_position: PROFESSOR OF PLANETA ! end of coverpage abstract: line_1: To achieve stable quantum efficiency performance for the overthinned areas of line_2: the CCDs, the chips must be flooded with ultraviolet light. This will produce line_3: a uniform quantum efficiency response over the entire CCD. The quantum line_4: efficiency stability is chiefly dependent on temperature. The exact amount of line_5: charging required to eliminate quantum efficiency instability will be line_6: determined in ground tests. line_8: Revised 10/26/89 by PStanley to remove parallel S/C data line 40.00 from line_9: SEQ NO GAP special requirement. ! ! end of abstract general_form_proposers: lname: WF/PC IDT inst: VARIOUS ! ! end of general_form_proposers block general_form_text: question: 2 section: 0 line_1: This procedure is needed in order to accurately calibrate the instrument. The line_2: UV flooding produces instrument quantum efficiency stability. ! question: 3 section: 0 line_1: The HST will be pointed directly away from the sun (plus a small angle TBS) so line_2: that the ultra-violet light can be piped onto the CCDs. line_3: The time required for the UV flood is 4 orbits for the line_4: WF and 15 orbits for the PC. line_7: The scenario for the UV Flood is as follows: line_9: Flood the WFC - 4 orbits line_10: Take a WFC image (SUNPIX) line_11: Flood the PC - 15 orbits line_12: Flip the mirror back to WFC line_13: Take a WFC image (SUNPIX) line_14: Take 10 bias frames line_15: Wait 2-6 hours then take UV Baseline images of UV Standard. ! question: 4 section: 0 line_1: Instrument calibration ! question: 5 section: 0 line_1: Schedule first UV flood at start of SV. The need for a line_2: second flood will be determined later in SV. line_3: Prerequisites: line_4: The High-Temp Decontamination procedure is line_5: performed just before starting the UV Flood. line_6: During the entire UV-FLOOD sequence, when HST is line_7: maintaining a UV-FLOOD attitude of one degree off line_8: -V1 axis to the sun, the -V3 axis shall be oriented line_9: such that the WF/PC radiator is exposed to earth line_10: albedo as much of the orbit as feasible. This line_11: will ensure optimal/maximum achievable line_12: temperatures for the CCD's during UV-FLOOD, and line_13: hence minimize/eliminate the risk of collecting line_14: contaminants on the CCD windows which may line_15: polymerize when exposed to the intense sunlight line_16: during the actual UV FLOOD. The exact orientation line_17: of HST cannot be determined until the BETA-ANGLE line_18: is known (after HST is launched). line_20: This program is SV minimum plan. ! question: 5 section: 2 line_1: QUESTION TO IMPLEMENTER: line_3: The exposure time specified for the actual flooding time line_4: represents the required number of orbits (4 for WFC and 15 for line_5: PC) assuming 60 minutes/orbits of sun. The shutter should line_6: not be closed during this entire time. Should the exposure line_7: time be equivalent to required time on target or required line_8: shutter open time? (348 minutes for WFC and 1404 minutes for line_9: PC) ! question: 6 section: 0 line_1: The long exposure is necessary to properly perform line_2: the calibraion of the instrument. ! question: 7 section: 0 line_1: These data will be archived at ScI and the numbers will be included in the line_2: WF/PC calibration report. ! !end of general form text general_form_address: lname: DANIELSON fname: G. mi: E. inst: CALTECH addr_1: MS 170-25 addr_2: GEOLOGICAL AND PLANETARY SCIENCES city: PASADENA state: CA zip: 91125 country: USA phone: (818) 356-6861 ! lname: BAUM fname: WILLIAM mi: A. inst: LOWELL OBSERVATORY addr_1: PLANETARY RESEARCH addr_2: 1400 W. MARS HILL RD city: FLAGSTAFF state: AZ zip: 86001 country: USA phone: (818) 744-3358 ! lname: GUNN fname: JAMES mi: E. inst: PRINCETON UNIVERSITY addr_1: ASTROPHYSICAL SCIENCE addr_2: PEYTON HALL city: PRINCETON state: NJ zip: 08540 country: USA phone: (609) 452-3803 ! lname: WESTPHAL fname: JAMES mi: A. title: PROF. category: PI inst: CALTECH addr_1: M/S 170-25 addr_2: DIVISION OF GEOLOGICAL AND PLANETARY SCIENCES city: PASADENA state: CA zip: 91125 country: USA phone: (818) 356-4900 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: A+81D266 name_2: GSC4547-2196 descr_1: UV SPECTROPHOTOMETRIC STANDARD pos_1: RA = 09H 21M 29S +/- 0.1S, pos_2: DEC = 81D 43' 00" +/- 1", pos_3: PLATE-ID=00LN equinox: 2000 fluxnum_1: 1 fluxval_1: V= 12.1 +/- 0.5 ! ! end of fixed targets solar_system_targets: targnum: 2 name_1: SUN descr_1: OTHER UV SOURCE lev1_1: STD = SUN, ACQ = 30 ! ! end of solar system targets ! No generic target records found exposure_logsheet: linenum: 1.000 sequence_1: DEFINE sequence_2: UVBASELINE targname: A+81D266 config: WFC opmode: IMAGE aperture: W1 sp_element: G200L num_exp: 1 time_per_exp: 5S priority: 1 req_1: SEQ 1-8 NO GAP; req_2: SEQ 1-4 NON-INT; req_3: GUID TOL 0.04" / 1-4; comment_1: ONLY READOUT 1 CCD. comment_2: GYROHOLD. ! linenum: 2.000 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: W2 sp_element: ^ num_exp: ^ time_per_exp: ^ priority: ^ comment_1: ONLY READOUT 1 CCD. comment_2: GYROHOLD. ! linenum: 3.000 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: W3 sp_element: ^ num_exp: ^ time_per_exp: ^ priority: ^ comment_1: ONLY READOUT 1 CCD. comment_2: GYROHOLD. ! linenum: 4.000 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: W4 sp_element: ^ num_exp: ^ time_per_exp: ^ priority: ^ comment_1: ONLY READOUT 1 CCD. comment_2: GYROHOLD. ! linenum: 5.000 sequence_1: ^ targname: ^ config: PC opmode: ^ aperture: P5 sp_element: ^ num_exp: ^ time_per_exp: 25S priority: ^ req_1: SEQ 5-8 NON-INT; req_2: GUID TOL 0.03" / 5-8; comment_1: ONLY READOUT 1 CCD. ! linenum: 6.000 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: P6 sp_element: ^ num_exp: ^ time_per_exp: ^ priority: ^ comment_1: ONLY READOUT 1 CCD. ! linenum: 7.000 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: P7 sp_element: ^ num_exp: ^ time_per_exp: ^ priority: ^ comment_1: ONLY READOUT 1 CCD. ! linenum: 8.000 sequence_1: ^ targname: ^ config: ^ opmode: ^ aperture: P8 sp_element: ^ num_exp: ^ time_per_exp: ^ priority: ^ comment_1: ONLY READOUT 1 CCD. ! linenum: 9.000 sequence_1: DEFINE sequence_2: SUNPIX targname: SUN config: WFC opmode: UVOBS aperture: ALL sp_element: F122M,F230W num_exp: 1 time_per_exp: 0.11S priority: 1 req_1: GUID TOL 0.04"; comment_1: GYROHOLD. ! linenum: 10.000 sequence_1: DEFINE sequence_2: UVFLD-W targname: SUN config: WFC opmode: UVFLOOD num_exp: 1 time_per_exp: 240M priority: 1 param_1: HEAT = 0.75 req_1: GUID TOL 0.04"; comment_1: EXPOSE FOR 4 ORBITS, ADJUST EXPOSURE comment_2: TIME AS NEEDED. GYROHOLD. SHUTTER comment_3: REMAINS OPEN DURING OCCULTATIONS. ! linenum: 11.000 sequence_1: DEFINE sequence_2: UVFLD-PC targname: SUN config: PC opmode: UVFLOOD num_exp: 1 time_per_exp: 900M priority: 1 req_1: GUID TOL 0.04"; comment_1: EXPOSE FOR 15 ORBITS, ADJUST EXPOSURE comment_2: TIME AS NEEDED. GYROHOLD. SHUTTER comment_3: REMAINS OPEN DURING OCCULTATIONS ! linenum: 12.000 sequence_1: USE sequence_2: UVBASELINE req_1: SEQ 12-30, 50-110 NO GAP; ! linenum: 20.000 targname: ORBIT-POLE config: WFC opmode: DECON aperture: ALL num_exp: 1 time_per_exp: 8H priority: 1 param_1: TEMP=HIGH ! linenum: 30.000 sequence_1: USE sequence_2: UVBASELINE ! linenum: 50.000 sequence_1: USE sequence_2: UVFLD-W comment_1: AFTER 3RD ORBIT TURN OFF HEATPIPE HTR. comment_2: AFTER 4TH ORBIT TURN ON: MECH PWR, comment_3: WFC TEC, AND CLOSE SHUTTER A. ! linenum: 60.000 sequence_1: USE sequence_2: SUNPIX ! linenum: 70.000 sequence_1: USE sequence_2: UVFLD-PC ! linenum: 80.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 1M priority: 1 comment_1: EXECUTE COMMAND TO CLOSE SHUTTER A. ! linenum: 90.000 sequence_1: USE sequence_2: SUNPIX comment_1: RECONFIGURE THE WF/PC POST FLOOD. comment_2: OPEN SHUTTER BLADES BEFORE MOVING UV comment_3: FLOOD MIRROR. ! linenum: 100.000 targname: DARK config: S/C opmode: DATA aperture: NONE num_exp: 1 time_per_exp: 3M priority: 1 req_1: AFTER 80 BY 35M +/-5M comment_1: TURN ON PC TECS. ! linenum: 110.000 targname: BIAS config: PC opmode: IMAGE aperture: ALL sp_element: NONE num_exp: 10 time_per_exp: 0S priority: 1 ! linenum: 120.000 sequence_1: DEFINE sequence_2: UVBSLN1 targname: A+81D266 config: # opmode: IMAGE aperture: # sp_element: G200L num_exp: 1 time_per_exp: 1S priority: 1 comment_1: ONLY READOUT 1CCD. ! linenum: 130.000 sequence_1: USE sequence_2: UVBSLN1 config: WFC aperture: W1 time_per_exp: X5 req_1: AFTER 110 BY 4H +/- 2H ! linenum: 140.000 sequence_1: USE sequence_2: UVBSLN1 config: WFC aperture: W2 time_per_exp: X5 ! linenum: 150.000 sequence_1: USE sequence_2: UVBSLN1 config: WFC aperture: W3 time_per_exp: X5 ! linenum: 160.000 sequence_1: USE sequence_2: UVBSLN1 config: WFC aperture: W4 time_per_exp: X5 ! linenum: 170.000 sequence_1: USE sequence_2: UVBSLN1 config: PC aperture: P5 time_per_exp: X25 ! linenum: 180.000 sequence_1: USE sequence_2: UVBSLN1 config: PC aperture: P6 time_per_exp: X25 ! linenum: 190.000 sequence_1: USE sequence_2: UVBSLN1 config: PC aperture: P7 time_per_exp: X25 ! linenum: 200.000 sequence_1: USE sequence_2: UVBSLN1 config: PC aperture: P8 time_per_exp: X25 req_1: GROUP 130-200 WITHIN 220M ! ! end of exposure logsheet ! No scan data records found