! $Id: 5189,v 4.1 1994/07/27 15:49:31 pepsa Exp $ coverpage: title_1: EARLY RELEASE OBSERVATIONS OF THE GALACTIC CENTER sci_cat: GALAXIES & CLUSTERS sci_subcat: NEARBY GALAXIES proposal_for: SMC/ERO pi_title: DR. pi_fname: WILLIAM pi_lname: SPARKS pi_inst: STSCI pi_country: USA hours_pri: 8.27 num_pri: 1 wf_pc: Y ! end of coverpage abstract: line_1: The proposal is to assess the recovered capabilities of HST to perform line_2: photometry in a crowded field towards the near IR, to faint limits and line_3: with the scientifically useful target of the stellar cluster around the line_4: center of the Galaxy. ! ! end of abstract general_form_proposers: lname: SPARKS fname: WILLIAM title: DR. inst: STSCI country: USA esa: N ! lname: LO fname: KWOK-YUNG inst: 2250 country: USA ! lname: BIRETTA fname: JOHN inst: 3470 country: USA ! ! end of general_form_proposers block general_form_text: question: 2 section: 1 line_1: ! question: 3 section: 1 line_1: Short description of proposed observations ! question: 4 section: 1 line_1: (a) Justification for the orients and apertures: line_3: We have changed apertures from WF2 to WF3, and added ORIENT requirements line_4: to eliminate the possibility that a bright star (visible on the GSSS line_5: finding charts) will bloom into the target area on the CCD. These line_6: changes are not absolutely required, but will improve the probability line_7: of the program succeeding. We note there is considerable uncertainty line_8: in the system quantum efficiency (QE) at this wavelength, and line_9: blooming may occur if the largest QE values prove correct. The` line_10: above changes are a precaution against this possibility. line_11: The ORIENT range includes the nominal spacecraft roll angle, line_12: and should not impact scheduling. line_13: We have decreased the exposure times from 1200s to 1000s to line_14: make scheduling easier. ! question: 7 section: 1 line_1: Data reduction and analysis line_3: The data will be rapidly processed for early assessment of the HST recovery. ! !end of general form text general_form_address: lname: Sparks fname: William title: Dr. category: PI inst: STScI addr_1: 3700 San Martin city: BALTIMORE state: MD zip: 21218 country: USA phone: 410-338-4827 telex: 410-338-1592 from_date: 21-MAR-88 to_date: 21-MAR-98 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: IRS16-POS1 name_2: GALACTIC-CENTER-POS1 name_3: SGR-A-POS1 descr_1: E,301,312,910, descr_2: I,601, descr_3: C,202 pos_1: RA = 17H 42M 29.335S +/- 0.07S, pos_2: DEC = -28D 59' 18.6" +/- 1.0" equinox: 1950.0 fluxnum_1: 1 fluxval_1: I=18.4+/-0.3, TYPE=B0V, A(V)=30 ! targnum: 2 name_1: IRS16-POS2 name_2: GALACTIC-CENTER-POS2 name_3: SGR-A-POS2 descr_1: E,301,312,910, descr_2: I,601, descr_3: C,202 pos_1: RA-OFF = 0.38S +/- 0.08S, pos_2: DEC-OFF = -5.0" +/- 1.0", pos_3: FROM 1 equinox: 1950.0 comment_1: SEE TARGET 1 COMMENT fluxnum_1: 1 fluxval_1: I=18.4+/-0.3, TYPE=B0V, A(V)=30 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: IRS16-POS1 config: WFPC2 opmode: IMAGE aperture: WF3 sp_element: F1042M num_exp: 8 time_per_exp: 1000S s_to_n: 20 s_to_n_time: 19200S fluxnum_1: 1 priority: 1 param_1: CR-SPLIT=NO req_1: CYCLE 4 / 1.0-2.0; req_2: ORIENT 287D +/- 30D; comment_1: ORIENT 107 +/- 30D ALSO ACCEPTABLE. ! linenum: 1.500 targname: IRS16-POS2 config: WFPC2 opmode: IMAGE aperture: WF3 sp_element: F1042M num_exp: 8 time_per_exp: 1000S s_to_n: 20 s_to_n_time: 19200S fluxnum_1: 1 priority: 1 param_1: CR-SPLIT=NO req_1: SAME ORIENT FOR 1.5 AS 1.0; ! linenum: 2.000 targname: IRS16-POS1 config: WFPC2 opmode: IMAGE aperture: WF3 sp_element: F814W num_exp: 3 time_per_exp: 600S s_to_n: 20 s_to_n_time: 1800S fluxnum_1: 1 priority: 1 param_1: CR-SPLIT=NO req_1: SAME POS FOR 2.0 AS 1.0; ! ! end of exposure logsheet ! No scan data records found