! $Id: 5248,v 4.1 1994/07/27 16:08:16 pepsa Exp $ coverpage: title_1: WFPC2 IMAGE QUALITY AND STABILITY CHECK proposal_for: SMC/WF2 pi_fname: CHRIS pi_lname: BURROWS pi_inst: ST SCI pi_country: USA pi_phone: 410-338-4913 num_pri: 1 wf_pc: Y realtime: N ! end of coverpage abstract: line_1: This activity will verify that the image is stable over line_2: 2000 sec as required for normal operations. ! ! end of abstract general_form_proposers: lname: BURROWS fname: CHRIS inst: ST SCI country: USA esa: Y ! ! end of general_form_proposers block general_form_text: question: 2 section: 1 line_1: This is the WFPC 2 image quality and stability check. ! question: 3 section: 1 line_1: Using a star field in NGC188, a single ~2000 second image will line_2: be obtained followed by an orbit where multiple images are taken line_3: over ~2000 second. Using F502N, one CR-SPIT 2000s exposure with line_4: 15 electrons gain is taken yielding a worst case 0.5 full well line_5: for a 15th magnitute target. Then a series of 10 1 sec F555W line_6: exposures are taken each separated by 240 sec (yielding about line_7: half the count rates). ! question: 5 section: 1 line_1: Prerequisites: line_2: 1) WFPC2 Fine Alignment complete (WFII-ALI-05) (Prop # 4616) ! !end of general form text general_form_address: lname: BURROWS fname: CHRIS category: PI inst: ST SCI addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: 410-338-4913 ! ! end of general_form_address records fixed_targets: targnum: 1 name_1: NGC188 descr_1: J,704 pos_1: RA=00H 42M 10.9S +/- 0.0044S, pos_2: DEC=+84D 59' 43.3" +/- 0.0058S equinox: 1950 fluxnum_1: 1 fluxval_1: V = 15.00 +/- 0.1 fluxnum_2: 1 fluxval_2: B-V = 0.00 +/- 0.1 ! ! end of fixed targets ! No solar system records found ! No generic target records found exposure_logsheet: linenum: 1.000 targname: DARK config: WFPC2 opmode: IMAGE aperture: WFALL sp_element: DEF num_exp: 2 time_per_exp: 1000S priority: 1 param_1: ATD-GAIN = 15 param_2: CR-SPLIT=NO req_1: CYCLE 4 / 1-3 ! linenum: 2.000 targname: NGC188 config: WFPC2 opmode: IMAGE aperture: WFALL sp_element: F502N num_exp: 1 time_per_exp: 2000S priority: 1 param_1: ATD-GAIN = 15 param_2: CR-SPLIT=.5 ! linenum: 3.000 targname: NGC188 config: WFPC2 opmode: IMAGE aperture: WFALL sp_element: F555W num_exp: 14 time_per_exp: 1S priority: 1 param_1: CLEAR = YES ! ! end of exposure logsheet ! No scan data records found