! File: 2200C.PROP ! Database: PEPDB ! Date: 17-FEB-1994:03:19:35 coverpage: title_1: GST5 EXTERNAL FLAT FIELD CALIBRATIONS proposal_for: GST/WFC pi_title: PROF pi_fname: J. pi_mi: A. pi_lname: WESTPHAL pi_inst: CALTECH pi_country: USA pi_phone: (818) 356-4900 keywords_1: CALIBRATION, FLAT FIELDS wf_pc: X pi_position: J. A. WESTPHAL ! end of coverpage abstract: line_1: This test is designed to take "out-of-focus" or uniform illuminated pictures of line_2: the earth. These data will be used to characterize the WF/PC instrument line_3: signature for flat field corrections. Six frames are taken to try and obtain line_4: data w/o clouds to allow the proper exposure. ! ! end of abstract general_form_proposers: lname: WESTPHAL fname: J. mi: A. inst: WF/PC IDT country: USA ! ! end of general_form_proposers block general_form_text: question: 2 section: 0 line_1: line_2: This series of observations are required to characterize line_3: the WF/PC and remove the instrument signature. These data are called line_4: flat fields. They are an attempt to obtain a uniform illumination in line_5: each pass band through the HST and the WF/PC instrument. These data line_6: are required for the calibration data base and the pipeline processing. line_7: Relative calibration (pixel-to-pixel) of both cameras is determined line_8: for each filter of the reduced data. ! question: 3 section: 0 line_1: line_2: These data are taken as often as possible to characterize line_3: the flat field of the HST and WF/PC instrument. They will be taken line_4: several times in order to miss clouds or other non-uniform illumination. line_5: They should be scheduled whenever the HST views the Earth on the line_6: lighted side. The exposure levels should be adjusted to obtain a line_7: "flat field exposure" of between one-half and three-quarters full line_8: scale. Since dust and spots can change location or appear anew line_9: these data must be taken frequently. line_11: The observation is defined to take 6 WFC and PC bright earth line_12: exposures at selected wavelengths. Longer exposures are taken line_13: at zenith pointings with filter F122M. line_15: Normal pre-flash exposures are omitted for flat field exposures. ! question: 5 section: 0 line_1: SV Prerequisite: line_2: UV Flood CCD conditioning WF/PC-12 (prop 1431). Allow CCDs line_3: to settle at least 6 hours before performing filter set 1. line_5: Filter Set 1: lines 1-18 are to be performed within 2 weeks (in first line_6: 2-3 weeks of SV). line_8: Filter Set 2: lines 19-45 are to be performed within 35 days (anytime line_9: in weeks 3-6 of SV) line_11: Filter Set 3: lines 46-79 are to be performed within 60 days (anytime line_12: after week 11 and the end of SV). line_14: Repeat filter sets 1 & 2 approximately 50 days after completion of line_15: the first execution of Filter Set 2 (i.e., after week 11 of SV). ! !end of general form text general_form_address: lname: WESTPHAL fname: JAMES mi: A. title: PROF. category: PI inst: CALTECH addr_1: M/S 170-25 city: PASADENA state: CA zip: 91125 country: USA ! lname: DANIELSON fname: ED inst: CALTECH addr_1: M/S 170-25 city: PASADENA state: CA zip: 91125 country: USA phone: (818) 356-6861 telex: EDANIELSON ! ! end of general_form_address records ! No fixed target records found ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 47.000 targname: EARTH-CALIB config: WFC opmode: IMAGE aperture: ALL sp_element: F284W num_exp: 6 time_per_exp: 2S priority: 1 param_1: CR-SPLIT=NO ! linenum: 48.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F368M,F8ND num_exp: 6 time_per_exp: 120S priority: 1 param_1: ^ ! linenum: 49.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F437N num_exp: 6 time_per_exp: 3S priority: 1 param_1: ^ ! linenum: 50.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F492M,F8ND num_exp: 6 time_per_exp: 50S priority: 1 param_1: ^ ! linenum: 51.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F517N num_exp: 6 time_per_exp: 0.2S priority: 1 param_1: ^ ! linenum: 52.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F547M,F8ND num_exp: 6 time_per_exp: 30S priority: 1 param_1: ^ ! linenum: 65.000 targname: EARTH-CALIB config: PC opmode: ^ aperture: ^ sp_element: F284W num_exp: 6 time_per_exp: 6S priority: 1 param_1: ^ ! linenum: 66.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F368M num_exp: ^ time_per_exp: 0.5S priority: 1 param_1: ^ ! linenum: 67.000 targname: ^ config: ^ opmode: ^ aperture: ^ sp_element: F437N num_exp: ^ time_per_exp: 18S priority: 1 param_1: ^ ! linenum: 68.000 targname: EARTH-CALIB config: PC opmode: IMAGE aperture: ALL sp_element: F492M,F8ND num_exp: 6 time_per_exp: 260S priority: 1 param_1: CR-SPLIT=NO ! ! end of exposure logsheet ! No scan data records found