! $Id: 5750,v 5.1 1994/08/10 17:58:01 pepsa Exp $ coverpage: title_1: FOC GEOMETRIC CORRECTION AND PLATE SCALE - CYCLE 4 proposal_for: CAL/FOC pi_title: DR. pi_fname: PERRY pi_lname: GREENFIELD pi_inst: SPACE TELESCOPE SCIENCE INSTITUTE pi_country: USA foc: X abstract: line_1: The aim of these observations is to determine the Post-COSTAR plate- line_2: scale of the FOC/96 (f/151) camera and to provide geometric correction line_3: for all of the supported FOC/96 imaging formats. It is a new version of line_4: the last half of the 5521 proposal which was not executed properly. line_5: The changes made are a result of new knowledege that should improve line_6: the effectiveness of the proposal and to ensure that the high-voltage line_7: will be left on for a sufficient period so that the distortion line_8: of the camera will be reasonably stable. general_form_proposers: lname: GREENFIELD fname: PERRY title: DR. inst: SPACE TELESCOPE SCIENCE INSTITUTE country: USA general_form_text: question: 3 section: 1 line_1: The platescale of the f/96 relay will be determined by comparing these line_2: observations of the center of 47-Tuc with an identical field which was line_3: obtained and calibrated as part of the Cycle 3 platescale monitoring line_4: proposal (4231). line_5: The geometric distortion is determined from the overlapping observations line_6: of the crowded field which are used to fit a geometric distortion model line_7: and determine the undistorted positions of the stars in the field. These line_8: fit "undistorted" positions are then used to determine the distortion line_9: models for other formats. Even though the smaller formats use the postions line_10: obtained from larger formats, they still use a small number of overlapping line_11: exposures to increase the density of measured points, particularly in line_12: the x direction, which is needed given the smaller spatial scale of line_13: geometric distortion variations for the smaller formats. It is necessary line_14: to do a general fit to the star positions for both the zoomed and normal line_15: pixel formats since the positions determined from the zoomed format are line_16: not as accurate as would be determined from the normal pixel formats. line_17: The two long exposures at the beginning are designed to ensure that the line_18: external exposures are taken after a long warm-up period of the high-voltage line_19: power supply. general_form_address: lname: GREENFIELD fname: PERRY category: PI inst: SPACE TELESCOPE SCIENCE INSTITUTE fixed_targets: targnum: 1 name_1: NGC104 descr_1: J,701 pos_1: RA=00H 24M 6.02S +/- 0.01S, pos_2: DEC=-72D 4' 52.7" +/- 0.1", pos_3: PLATE-ID=01X5 equinox: 2000 exposure_logsheet: linenum: 1.000 targname: DARK config: FOC/96 opmode: IMAGE aperture: 512X1024 sp_element: CLEAR num_exp: 1 time_per_exp: 50M priority: 1 param_3: PIXEL=50X25 req_1: CYCLE 4 / 1-21; req_2: SEQ 1-2 NO GAP; req_3: SEQ 1-21 WITHIN 16H; linenum: 2.000 targname: INTFLAT config: FOC/96 opmode: RESEAU aperture: 512X512 sp_element: CLEAR num_exp: 1 time_per_exp: 50M priority: 1 param_1: LED=GREEN-2, param_2: LED-STEP=24, param_3: PIXEL=25X25 linenum: 3.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F346M num_exp: 1 time_per_exp: 20M priority: 1 param_1: PIXEL=50X25 req_1: SAME ORIENT FOR 4.000-21.000 AS 3.000; req_2: SEQ 3-21 NO GAP linenum: 3.100 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X1024 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=50X25 req_1: POS TARG -3.5,3.5; req_2: SAME ORIENT FOR 4.000-21.000 AS 3.000; req_3: SEQ 3-21 NO GAP linenum: 4.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X1024 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=50X25 req_1: POS TARG 3.5,3.5 linenum: 5.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X1024 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=50X25 req_1: POS TARG 3.5,-3.5 linenum: 6.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X1024 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=50X25 req_1: POS TARG -3.5,-3.5 linenum: 7.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X1024 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=50X25 linenum: 8.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=25X25 req_1: POS TARG -1.75,1.75; linenum: 9.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=25X25 req_1: POS TARG 1.75,1.75; linenum: 10.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=25X25 req_1: POS TARG 1.75,-1.75; linenum: 11.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=25X25 req_1: POS TARG -1.75,-1.75; linenum: 12.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X512 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=25X25 linenum: 13.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 256X256 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 req_1: POS TARG -1.0,0; linenum: 14.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 256X256 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 req_1: POS TARG 1.0,0; linenum: 15.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 256X256 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 linenum: 16.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 128X128 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 linenum: 17.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 128X128 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 req_1: POS TARG 1.0,0; linenum: 18.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 256X1024 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 linenum: 19.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 256X1024 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 req_1: POS TARG 1.0,0; linenum: 20.000 targname: NGC104 config: FOC/96 opmode: IMAGE aperture: 512X1024 sp_element: F220W num_exp: 1 time_per_exp: 10M priority: 1 param_1: PIXEL=50X25 linenum: 21.000 targname: INTFLAT config: FOC/96 opmode: RESEAU aperture: 512X1024 sp_element: CLEAR num_exp: 1 time_per_exp: 15M priority: 1 param_1: LED=GREEN-2, param_2: LED-STEP=24, param_3: PIXEL=50X25 !~~~RPSS~~~,CALFOC,new_geoplate.prop,19-JUL-1994 11:07