! File: 3161C.PROP ! Database: PEPDB ! Date: 18-FEB-1994:20:01:25 coverpage: title_1: POINT SPREAD FUNTION SCATTERING OLT proposal_for: SV/OLT pi_fname: HASHIMA pi_lname: HASAN pi_inst: ST SCI pi_country: USA pi_phone: (301) 338-4519 num_pri: 1 ! end of coverpage abstract: line_1: Test Objective: line_2: Determine the effect of internal HST light scattering. Use WFC line_3: measurements taken of a bright star at varying distances from the line_4: W1 field of view. Each image should be pre-flashed and the last one line_5: purged. ! ! end of abstract general_form_proposers: lname: HASAN fname: HASHIMA title: PI inst: ST SCI country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: The image of a bright star will be taken in the WFC for 3 different line_2: filters - F889N, F487N and F284W. 3 images will be taken with each line_3: filter at varying distances from the W1 field of view. line_5: The first set of images will have the star at the center of the W1 line_6: chip and an exposure will be taken with each filter in combination line_7: with the neutral density filter. This measurement will give the line_8: details of the point spread function (PSF). The S/N ratios at the line_9: center and at 2 arcsec from the center are listed below: line_11: F889N - S/N = 131, 2.8 line_12: F487N - S/N = 159, 3.2 line_13: F284W - S/N = 157, 4.1 line_15: The second set of images will be taken with the star in chip W2 at a line_16: distance of 2 arcsec from the edge of W1 (note: to maintain correlation line_17: with initial pointing, all POS TARGs are defined relative to W1). No line_18: neutral density filter will be used. This measurement gives details line_19: of the PSF from 2 arcsec to 4 arcsec. S/N ratios at 2 arcsec and 4 line_20: arcsec are given below: ! question: 3 section: 2 line_1: F889N - S/N = 154, 15.9 line_2: F487N - S/N = 169, 12.7 line_3: F284W - S/N = 169, 12.7 line_5: The last set of images will taken with the star in chip W2 at a line_6: distance of 4 arcsec from the edge of W1. No neutral density filter line_7: will be used. This measurement gives the details of the PSF from line_8: 4 arcsec to 40 arcsec. Expected S/N ratios at 4 and 40 arcsec line_9: are given below: line_11: F889N - S/N = 147, 1.5 line_12: F487N - S/N = 111, 4.8 line_13: F284W - S/N = 119, 15.5 ! question: 4 section: 1 line_1: Submitted as an Observatory Level Test ! question: 5 section: 1 line_1: Test Requirements: line_4: - Optical image quality should be near Level 1 (lambda / 8). line_5: - No observations made during SAA passage. ! question: 5 section: 2 line_1: Test Repetition: line_2: - No repetitions of this OLT are scheduled during SV. ! question: 7 section: 1 line_1: Real Time Data Analysis Requirements: line_2: Not anticipated at this time. ! question: 9 section: 1 line_1: Results of this OLT will be documented in an ST ScI Technical line_2: Report with distribution to appropriate personnel. Portions of line_3: this test will be presented at the HST symposium following the line_4: SV mission phase. Test results may also be submitted for pub- line_5: lication in an appropriate technical journal. ! !end of general form text general_form_address: lname: HASAN fname: HASHIMA category: PI inst: ST SCI ! lname: HASAN fname: HASHIMA title: DR. inst: STSCI addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: 301-338-4519 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: PSFSTAR name_2: GSC3287_1079 descr_1: STAR FOR PSF MEASUREMENTS pos_1: RA=11H 01M 50.31S +/- 0.3S, pos_2: DEC=+56D 22' 56.1" +/- 0.1" equinox: 2000 fluxnum_1: 1 fluxval_1: V = 2.4 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: PSFSTAR config: WFC opmode: IMAGE aperture: ALL sp_element: F889N,F8ND num_exp: 1 time_per_exp: 50S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO, req_1: CYCLE 0/1-9; req_2: POS TARG +39,+39/1-3; req_3: SEQ 1-9 NO GAP; comment_1: STAR SHOULD END UP "CENTERED" IN W1. ! linenum: 2.000 targname: PSFSTAR config: WFC opmode: IMAGE aperture: ALL sp_element: F487N,F8ND num_exp: 1 time_per_exp: 30S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO, ! linenum: 3.000 targname: PSFSTAR config: WFC opmode: IMAGE aperture: ALL sp_element: F284W,F8ND num_exp: 1 time_per_exp: 90S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO, ! linenum: 4.000 targname: PSFSTAR config: WFC opmode: IMAGE aperture: ALL sp_element: F889N num_exp: 1 time_per_exp: 30S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO, req_1: POS TARG -2.5,+39/4-6; comment_1: STAR SHOULD END UP 2.5" OVER THE EDGE comment_2: IN W2. ! linenum: 5.000 targname: PSFSTAR config: WFC opmode: IMAGE aperture: ALL sp_element: F487N num_exp: 1 time_per_exp: 18S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO, ! linenum: 6.000 targname: PSFSTAR config: WFC opmode: IMAGE aperture: ALL sp_element: F284W num_exp: 1 time_per_exp: 40S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO, ! linenum: 7.000 targname: PSFSTAR config: WFC opmode: IMAGE aperture: ALL sp_element: F889N num_exp: 1 time_per_exp: 1800S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO, req_1: POS TARG -6,+39/7-9; comment_1: STAR SHOULD END UP 6" OVER THE EDGE comment_2: IN W2. ! linenum: 8.000 targname: PSFSTAR config: WFC opmode: IMAGE aperture: ALL sp_element: F487N num_exp: 1 time_per_exp: 700S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO, ! linenum: 9.000 targname: PSFSTAR config: WFC opmode: IMAGE aperture: ALL sp_element: F284W num_exp: 1 time_per_exp: 1800S fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO, param_3: PURGE=YES, ! ! end of exposure logsheet ! No scan data records found