! File: 3318C.PROP ! Database: PEPDB ! Date: 19-FEB-1994:02:57:40 coverpage: title_1: GHRS SENSITIVITY MONITOR proposal_for: SV/HRS pi_title: DR. pi_fname: DENNIS pi_mi: C. pi_lname: EBBETS pi_inst: BALL AEROSPACE pi_country: USA pi_phone: 303 939 5964 keywords_1: CALIBRATION hours_pri: 8.38 num_pri: 3 hrs: Y ! end of coverpage abstract: line_1: This proposal defines a long term sensitivity monitoring program line_2: for the Goddard High Resolution Spectrograph. It uses one UV line_3: standard star, BD+75d325. BD+75d325 will be observed once to line_4: establish continuity with the early SV calibration. The star is line_5: observed with the LSA and SSA. The exposure times are short. ! ! end of abstract general_form_proposers: lname: EBBETS fname: DENNIS title: DR. inst: BALL AEROSPACE country: USA ! lname: CARPENTER fname: KENNETH title: DR. inst: GODDARD SPACE FLIGHT CENTER country: USA ! lname: AKE fname: TOM title: DR. inst: GODDARD SPACE FLIGHT CENTER country: USA ! lname: ROBINSON fname: RICHARD title: DR. inst: GODDARD SPACE FLIGHT CENTER country: USA ! lname: GILLILAND fname: RONALD title: DR. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! lname: DUNCAN fname: DOUGLAS title: DR. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA ! ! end of general_form_proposers block general_form_text: question: 2 section: 1 line_1: The sensitivity of the GHRS is likely to change slowly with line_2: time, as the optics and detectors experience prolonged line_3: exposure to the space environment. Accurate sensitivity line_4: curves are needed for planning exposure times before an line_5: observation, and for reducing data after the fact. A simple line_6: program is needed to monitor and update the sensitivities line_7: by making observations of UV standard stars several times per line_8: year. This proposal was developed jointly by the GHRS IDT line_9: calibration scientists and the STScI Instrument Scientists. line_10: It represents the transition from establishment of the line_11: baseline calibration by the IDT to the long term maintenance line_12: by the STScI. ! question: 3 section: 1 line_1: PART 1: lines 5-95 Grating G140L BD+75d325 line_2: Onboard acq with N1, LSA peakup, LSA image line_3: spectra at 1200, 1400, 1600, 1800 with star in LSA line_4: SSA image with N1 line_5: spectra at 1200, 1400, 1600, 1800 with star in SSA line_6: Grating G140M BD+75d325 line_7: LSA peakup and image with N1 line_8: spectra at 1150, 1200, 1300, 1400, 1500 with star in LSA ! question: 5 section: 1 line_1: Exposure times are based on observed count rates in SV. line_2: The goal is to obtain between 1000 - 10000 cts/diode in line_3: each substep bin. High S/N is required to identify small line_4: changes in sensitivity. Bright stars are used to keep the line_5: total test time as short as possible. The same star is line_6: used for all gratings to allow easy intercomparison and line_7: cross calibration. Acquisition exposures are made with line_8: mirrors on the same detector side as the grating, so side line_9: switches between acquisitions and spectra are not needed. line_10: Separate acquisitions for groups of related exposures should line_11: allow each to be an independent scheduling unit. This should line_12: provide maximum reasonable scheduling flexibility. Total line_13: test time is derived from the resource estimator. line_15: The test should be structured as one scheduling unit: line_17: PART 1: lines 5-95 ! !end of general form text general_form_address: lname: EBBETS fname: DENNIS mi: C. category: PI inst: BALL AEROSPACE ! lname: EBBETS fname: DENNIS title: DR. category: PI inst: BALL AEROSPACE addr_1: PO BOX 1062 addr_2: AR 1 city: BOULDER state: CO zip: 80306 country: USA phone: 303 939 5964 ! lname: CARPENTER fname: KENNETH title: DR. category: CON inst: GODDARD SPACE FLIGHT CENTER addr_1: CODE 680 city: GREENBELT state: MD zip: 20771 country: USA phone: 301 286 3453 ! lname: AKE fname: TOM title: DR. category: CON inst: GODDARD SPACE FLIGHT CENTER addr_1: CODE 680 city: GREENBELT state: MD zip: 20771 country: USA phone: 301 286 3924 ! lname: ROBINSON fname: RICH title: DR. category: CON inst: GODDARD SPACE FLIGHT CENTER addr_1: CODE 680 city: GREENBELT state: MD zip: 20771 country: USA phone: 301 286 4530 ! lname: GILLILAND fname: RONALD title: DR. category: CON inst: SPACE TELESCOPE SCIENCE INSTITIUE addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: 301 338 4454 ! lname: DUNCAN fname: DOUGLAS title: DR. category: CON inst: SPACE TELESCOPE SCIENCE INSTITIUE addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: 301 338 4935 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: BD75D325 name_2: GSC4380-2196 descr_1: SV UV STANDARD pos_1: RA = 08H 10M 49.31S +/- 0.1S, pos_2: DEC = +74D 57' 57.5" +/- 0.5", pos_3: PLATE-ID=00LQ equinox: 2000 pm_or_par: NO fluxnum_1: 1 fluxval_1: V=9.54 fluxnum_2: 2 fluxval_2: B-V=-0.37 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 5.000 targname: BD75D325 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 1.8S s_to_n: 10 fluxnum_1: 1 priority: 1 param_1: SEARCH-SIZE=3, param_2: FAINT=4000, req_1: ONBOARD ACQ FOR 10; req_2: CYCLE 0 / 5-95; req_3: SEQ 10-35 NO GAP; ! linenum: 10.000 targname: BD75D325 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 9.2S s_to_n: 10 fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 15-36; ! linenum: 15.000 targname: BD75D325 config: HRS opmode: IMAGE aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 102.4S s_to_n: 10 fluxnum_1: 1 priority: 1 param_1: NX=32, param_2: NY=16, param_3: DELTA-X=2, param_4: DELTA-Y=4, ! linenum: 20.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140L wavelength: 1200 num_exp: 1 time_per_exp: 57.6S s_to_n: 80 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 25.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140L wavelength: 1400 num_exp: 1 time_per_exp: 57.6S s_to_n: 80 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 30.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140L wavelength: 1600 num_exp: 1 time_per_exp: 115.2S s_to_n: 80 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 35.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140L wavelength: 1800 num_exp: 1 time_per_exp: 360.0S s_to_n: 80 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 35.500 targname: BD75D325 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 1.8S s_to_n: 10 fluxnum_1: 1 priority: 1 param_1: SEARCH-SIZE=3, param_2: FAINT=4000, req_1: ONBOARD ACQ FOR 36; req_2: CYCLE 0 / 5-95; req_3: SEQ 36-60 NO GAP; ! linenum: 36.000 targname: BD75D325 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 9.2S s_to_n: 10 fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 40-65; ! linenum: 40.000 targname: BD75D325 config: HRS opmode: IMAGE aperture: 0.25 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 102.4S s_to_n: 10 fluxnum_1: 1 priority: 1 param_1: NX=32, param_2: NY=16, param_3: DELTA-X=2, param_4: DELTA-Y=4, ! linenum: 45.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G140L wavelength: 1200 num_exp: 1 time_per_exp: 288.0S s_to_n: 80 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 50.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G140L wavelength: 1400 num_exp: 1 time_per_exp: 288.0S s_to_n: 80 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 55.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G140L wavelength: 1600 num_exp: 2 time_per_exp: 230.4S s_to_n: 80 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 60.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G140L wavelength: 1800 num_exp: 4 time_per_exp: 360.0S s_to_n: 80 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 61.000 targname: BD75D325 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 1.8S s_to_n: 10 fluxnum_1: 1 priority: 1 param_1: SEARCH-SIZE=3, param_2: FAINT=4000, req_1: ONBOARD ACQ FOR 65; req_2: CYCLE 0 / 5-95; req_3: SEQ 65-95 NO GAP; ! linenum: 65.000 targname: BD75D325 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 9.2S s_to_n: 10 fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 70-95; ! linenum: 70.000 targname: BD75D325 config: HRS opmode: IMAGE aperture: 2.0 sp_element: MIRROR-N1 num_exp: 1 time_per_exp: 102.4S s_to_n: 10 fluxnum_1: 1 priority: 1 param_1: NX=32, param_2: NY=16, param_3: DELTA-X=2, param_4: DELTA-Y=4, ! linenum: 75.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140M wavelength: 1150 num_exp: 2 time_per_exp: 288.0S s_to_n: 50 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 80.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140M wavelength: 1200 num_exp: 1 time_per_exp: 288.0S s_to_n: 50 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 85.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140M wavelength: 1300 num_exp: 1 time_per_exp: 144.0S s_to_n: 50 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 90.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140M wavelength: 1400 num_exp: 1 time_per_exp: 216.0S s_to_n: 50 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! linenum: 95.000 targname: BD75D325 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G140M wavelength: 1500 num_exp: 1 time_per_exp: 288.0S s_to_n: 50 fluxnum_1: 1 priority: 1 param_1: STEP-PATT=4 ! ! end of exposure logsheet ! No scan data records found