! File: 4114C.PROP ! Database: PEPDB ! Date: 20-FEB-1994:09:16:21 coverpage: title_1: GHRS SSA A2 SPIRAL - FINE ALIGNMENT proposal_for: CAL/HRS cont_id: 4114 pi_fname: RONALD pi_mi: L. pi_lname: GILLILAND pi_inst: SPACE TELESCOPE SCIENCE INSTITUTE pi_country: USA pi_phone: 410-338-4454 keywords_1: CALIBRATION keywords_2: SPECTROSCOPY, UV hours_pri: 1.39 num_pri: 1 ! end of coverpage abstract: line_1: The highest priority augmentation of flight software in support of GHRS line_2: for build 4.0 is capability of return to brightest point of an SSA line_3: spiral search. This will allow a true flux peakup in the SSA, a sorely line_4: missed capability currently. The initial SSA Spiral Search Test (3999) line_5: suggested an error of about 0.16 arcsec in LSA to SSA PDB values. line_6: This test will provide confirmation of current alignment line_7: uncertainties for mirror A2. line_8: This may allow improvements in upcoming A2-SSA observations before line_9: the optimal solution (return to brightest) is available. line_10: This test replaces, and should be an improvement upon, Prop. 2839 line_11: HRS/FGS Fine Alignment. ! ! end of abstract general_form_proposers: lname: GILLILAND fname: RONALD inst: STSCI country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: Exp log lines 1-134 describe the "brute force" SSA spiral line_2: starting at the nominal 0,0 aperture position and stepping line_3: out at 0.125" increments. Measurements are also taken line_4: at the 2 other positions - 1 at the expected best location line_5: and another bracketing the other side of that position. line_6: Measurements are again obtained at the nominal center and line_7: in the LSA. line_9: After return to the LSA in line 134.00, another ACQ/PEAKUP line_10: is performed to accurately recenter in the LSA prior to line_11: another offset to the SSA. We then run through a 3x3 line_12: spatial scan which is being considered as a workaround for line_13: SSA precise pointing until return to brightest is available. line_14: Prior to running this for GO programs, a verification of the line_15: is desired. These observations are described in lines 135,136. ! question: 5 section: 1 line_1: Minimal ACCUM mode exposures are more than adequate to define line_2: a high quality spiral flux "map" for G160M. ! question: 7 section: 1 line_1: line_4: Data will be analysed at the ST ScI using fully developed and line_5: tested software. ! question: 13 section: 1 line_1: line_3: Flux measurements will be obtained at a grid of positions near line_4: nominal best pointing with the SSA, using a line_5: dispersing element. This will be used to line_6: verify a possible change of aperture locations for the PDB. ! !end of general form text general_form_address: lname: GILLILAND fname: RONALD mi: L. category: PI inst: SPACE TELESCOPE SCIENCE INSTITUTE ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: HD141556 name_2: CHI-LUP descr_1: J,707 pos_1: RA=15H 47M 46.468S +/- 0.2", pos_2: DEC=-33D 28' 35.36" +/- 0.2" equinox: 1950 pm_or_par: Y pos_epoch_yr: 1950.00 ra_pm_val: -0.000600 ra_pm_unct: 0.000667 dec_pm_val: -0.0320 dec_pm_unct: 0.0100 rv_or_z: V=+5 comment_1: BP HG MN STAR fluxnum_1: 1 fluxval_1: V=3.95+/-.05, TYPE=BP fluxnum_2: 2 fluxval_2: F-CONT(1362)=1.8 E-10 fluxnum_3: 3 fluxval_3: F-CONT(1868)=1.9 E-10 fluxnum_4: 4 fluxval_4: F-CONT(2682)=1.0 E-10 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: HD141556 config: HRS opmode: ACQ aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 5.0S s_to_n: 10 fluxnum_1: 1 priority: 1 param_1: SEARCH-SIZE=5, param_2: FAINT=1900, req_1: ONBOARD ACQ FOR 1.001; comment_1: STEP-TIME=0.2 SEC ! linenum: 1.001 targname: HD141556 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 73.6S s_to_n: 10 fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 1.002-134.000; comment_1: STEP-TIME=1.6 SEC ! linenum: 1.002 targname: HD141556 config: HRS opmode: IMAGE aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 102.4S s_to_n: 10 fluxnum_1: 4 priority: 1 param_1: NX=32, param_2: NY=16, param_3: DELTA-X=2, param_4: DELTA-Y=4, ! linenum: 3.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 2.0 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 3 priority: 1 param_1: STEP-PATT=4, req_1: CYCLE 1 / 1.000-136.000; req_2: SEQ 3-136 NO GAP ! linenum: 12.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, comment_1: SPECIAL CMDING: PLEASE SUPPRESS ALL comment_2: DEFCALS,SPYBALS IN REMAINDER OF comment_3: PROPOSAL LINES 22-134; ! linenum: 22.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG -0.125,0.0 / 22 ! linenum: 32.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG -0.125,0.125 / 32 ! linenum: 42.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG 0.0,0.125 / 42 ! linenum: 52.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG 0.125,0.125 / 52 ! linenum: 62.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG 0.125,0.0 / 62 ! linenum: 72.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG 0.125,-0.125 / 72 ! linenum: 82.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG 0.0,-0.125 / 82 ! linenum: 92.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG -0.125,-0.125 / 92 ! linenum: 102.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG 0.0,-0.25 / 102 ! linenum: 112.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG -0.05,-0.163 / 112 comment_1: NOMINAL BEST POINTING FROM SPIRAL comment_2: SEARCH TEST ! linenum: 122.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: POS TARG 0.0,0.0 / 122 ! linenum: 134.000 targname: HD141556 config: HRS opmode: IMAGE aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 102.4S s_to_n: 10 fluxnum_1: 4 priority: 1 param_1: NX=32, param_2: NY=16, param_3: DELTA-X=2, param_4: DELTA-Y=4, ! linenum: 135.000 targname: HD141556 config: HRS opmode: ACQ/PEAKUP aperture: 2.0 sp_element: MIRROR-A2 num_exp: 1 time_per_exp: 73.6S s_to_n: 10 fluxnum_1: 1 priority: 1 req_1: ONBOARD ACQ FOR 136; comment_1: STEP-TIME=1.6 SEC ! linenum: 136.000 targname: HD141556 config: HRS opmode: ACCUM aperture: 0.25 sp_element: G160M wavelength: 1868 num_exp: 1 time_per_exp: 14.4S s_to_n: 100 fluxnum_1: 4 priority: 1 param_1: STEP-PATT=4, req_1: SPATIAL SCAN SINGLE-EXP; ! ! end of exposure logsheet scan_data: line_list: 136.00 fgs_scan: cont_dwell: D dwell_pnts: 3 dwell_secs: 14.40 scan_width: 0.2500 scan_length: 0.2500 sides_angle: 90.0000 number_lines: 3 scan_rate: 0.0000 first_line_pa: 0.0000 scan_frame: S/C len_offset: 0.125 wid_offset: 0.125 ! ! end of scan data