! $Id: 5241,v 4.1 1994/07/27 16:06:20 pepsa Exp $ coverpage: title_1: GUIDE STAR ACQUISITION VERIFICATION proposal_for: SME/PCS pi_title: DR pi_fname: FRANCIS pi_mi: H pi_lname: SCHIFFER 3RD pi_inst: STSCI pi_country: USA pi_phone: (410)338-4789 hours_pri: 1.50 num_pri: 1 pi_position: SCIENTIST ! end of coverpage abstract: line_1: After the alignment of the FHSTs and the FGSs line_2: it is necessary to verify that Guide Star Acquisitions line_3: can be performed successfully. This verification will line_4: be done by attempting 6 guide star acquisitions and line_5: holding fine lock in each case for 15 minutes. The line_6: engineering telemetry will indicate if the acquisition line_7: was successful and if the guiding was maintained. ! ! end of abstract general_form_proposers: lname: SCHIFFER 3RD fname: FRANCIS title: DR mi: H inst: STSCI country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: Perform 6 single pair acquisitions to fine lock line_2: and hold for 15 minutes to allow for the observation line_3: of the guiding performance. line_4: Two observations are expected to be done in each orbit. line_5: If possible each acquisition should use a different line_6: pair of guide stars and the guide stars should be spread line_7: as evenly as possible between the operational FGSs. line_8: The alignment between the FHST and FGS is not expected line_9: to be very well known at the time of these observations. line_10: The acquisitions should use the largest supported search line_11: radius. ! question: 5 section: 1 line_1: This proposal should be scheduled after the FHST/FGS line_2: Alignment (proposal 5242) but need not wait for line_3: the update of the onboard tables. If the FHST line_4: alignment tables have not been updated, a real-time line_5: attitude reference update will be required prior to line_6: the first acquisition to correct for the misalignment. line_7: This activity is a prerequisite for any other activities line_8: that require guiding with the FGSs. line_9: Two observations should fit in each orbit. Exposure times line_10: may be shortened to achieve that end. line_11: Pointing accuracies should be overridden to ensure the line_12: largest possible search radius. line_13: FHST updates should be suppressed. ! !end of general form text general_form_address: lname: Schiffer 3rd fname: Francis mi: H title: Dr category: PI inst: STScI addr_1: 3700 San Martin Drive city: Baltimore state: MD zip: 21218 country: USA phone: (410)338-4789 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: FIELD-004704+851528 name_2: NGC-188-FIELD pos_1: RA = 00H 47M 4.2S +/- 0.2S, pos_2: DEC= 85D 15' 18" +/- 1" equinox: J2000 comment_1: ARBITRARY POINTING AT A GOOD comment_2: SUN ANGLE THAT IS ALWAYS AVAILABLE. ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 0.500 targname: FIELD-004704+851528 config: S/C opmode: DATA aperture: V1 num_exp: 1 time_per_exp: 10M priority: 1 req_1: PCS MODE FINE / .5-6; req_2: SEQUENCE .5-6 NO GAP; req_3: CYCLE 3 / .5-6; req_4: RT ANALYSIS; comment_1: REQUIRES FHST VISIBILITY, comment_2: DOES NOT REQUIRE TARGET VISIBILITY, comment_3: ALLOW TIME FOR STOCC ARU. ! linenum: 1.000 targname: FIELD-004704+851528 config: S/C opmode: POINTING aperture: V1 num_exp: 1 time_per_exp: 15M priority: 1 comment_1: SEPARATE ACQUISITION FOR comment_2: EACH OBSERVATION, USE comment_3: DIFFERENT GUIDE STARS IF comment_4: POSSIBLE ! linenum: 2.000 targname: FIELD-004704+851528 config: S/C opmode: POINTING aperture: V1 num_exp: 1 time_per_exp: 15M priority: 1 comment_1: SEPARATE ACQUISITION FOR comment_2: EACH OBSERVATION, USE comment_3: DIFFERENT GUIDE STARS IF comment_4: POSSIBLE ! linenum: 3.000 targname: FIELD-004704+851528 config: S/C opmode: POINTING aperture: V1 num_exp: 1 time_per_exp: 15M priority: 1 comment_1: SEPARATE ACQUISITION FOR comment_2: EACH OBSERVATION, USE comment_3: DIFFERENT GUIDE STARS IF comment_4: POSSIBLE ! linenum: 4.000 targname: FIELD-004704+851528 config: S/C opmode: POINTING aperture: V1 num_exp: 1 time_per_exp: 15M priority: 1 comment_1: SEPARATE ACQUISITION FOR comment_2: EACH OBSERVATION, USE comment_3: DIFFERENT GUIDE STARS IF comment_4: POSSIBLE ! linenum: 5.000 targname: FIELD-004704+851528 config: S/C opmode: POINTING aperture: V1 num_exp: 1 time_per_exp: 15M priority: 1 comment_1: SEPARATE ACQUISITION FOR comment_2: EACH OBSERVATION, USE comment_3: DIFFERENT GUIDE STARS IF comment_4: POSSIBLE ! linenum: 6.000 targname: FIELD-004704+851528 config: S/C opmode: POINTING aperture: V1 num_exp: 1 time_per_exp: 15M priority: 1 comment_1: SEPARATE ACQUISITION FOR comment_2: EACH OBSERVATION, USE comment_3: DIFFERENT GUIDE STARS IF comment_4: POSSIBLE ! ! end of exposure logsheet ! No scan data records found