! File: 3153C.PROP ! Database: PEPDB ! Date: 18-FEB-1994:19:35:00 coverpage: title_1: TEST OF TRACK #51 MOVING TARGET CAPABILITIES proposal_for: ENG pi_fname: MARC pi_mi: W pi_lname: BUIE pi_inst: STSCI pi_country: USA pi_phone: 301-338-4994 hours_pri: 0.50 num_pri: 1 wf_pc: Y ! end of coverpage abstract: line_1: TEST OBJECTIVE: line_2: Verify that the type-51 track commands work for nominal tracking of solar line_3: system objects. Also verify that celestial-frame continuous spatial scans line_4: work simultaneously with the type-51 tracking. ! ! end of abstract general_form_proposers: lname: BUIE fname: MARC inst: STSCI country: USA ! lname: LUBENOW fname: ANDY inst: STSCI country: USA ! lname: DOXSEY fname: RODGER inst: STSCI country: USA ! ! end of general_form_proposers block general_form_text: question: 2 section: 1 line_1: This test consists of two pictures of a selected asteroid. One line_2: image will be tracked using TRACK #51 style command at the line_3: apparent rate of the asteroid. The second image will combine the line_4: motion of asteroid with a single-line, celestial grame, continuous line_5: spatial scan. This test will verify the ability of the ground line_6: system and the spacecraft to observe planetary targets using line_7: tracking approximated with straight-line motion on the line_8: plane-of-the-sky. ! question: 3 section: 1 line_1: The first image is meant to accurately track an unresolved asteroid. The line_2: length of the exposure will ensure that an accurate PSF with tracking line_3: can be sampled. line_5: The second image adds the motion of a continuous spatial scan to the motion line_6: of the asteroid. If successful, the image will contain a pure North-South line_7: trail on the image. line_9: The third image is a fail-safe image to get a picture of the background line_10: star field if the tracking does not work. A trail of the asteroid should line_11: also be visible in case of failure. If the tracking does work, the asteroid line_12: image core will be saturated but the wings of the PSF will still provide line_13: additional confirmation of the validity of the TRACK-51 commanding. line_15: The target has been chosen for the the May 1991 time-frame. It will be near line_16: opposition, unresolved, and of approxiamately the right magnitude to be useful line_17: for the needed exposure duration. If the test time frame shifts from May 1991 line_18: a different target must be selected. ! question: 8 section: 0 line_1: All ephemerides will be supplied by MOSS. ! !end of general form text general_form_address: lname: BUIE fname: MARC category: PI inst: STSCI addr_1: 3700 SAN MARTIN DRIVE city: BALTIMORE state: MD zip: 21218 country: USA phone: 301-338-4994 ! ! end of general_form_address records ! No fixed target records found solar_system_targets: targnum: 1 name_1: 2411-ZELLNER descr_1: ASTEROID ZELLNER lev1_1: STD=2411(ZELLNER) wind_1: WND1 = 01-MAY-91 TO 01-JUN-91, wind_3: SIZE 2411(ZELLNER) LT 0.03 WITHIN WND1, wind_5: OLG OF 2411(ZELLNER) BETWEEN 350 10 comment_1: WANT TO OBSERVE ASTEROID WHEN IT IS comment_2: TOO SMALL TO BE RESOLVED. ALSO SHOULD comment_3: BE NEAR OPPOSITION TO MINIMIZE THE comment_4: NON-LINEAR MOTION COMPONENTS AND comment_5: EFFECTS FROM JITTER. fluxnum_1: 1 fluxval_1: V = 14.7 +/- 0.1 ! ! end of solar system targets ! No generic target records found exposure_logsheet: linenum: 1.000 targname: 2411-ZELLNER config: PC opmode: IMAGE aperture: P6 sp_element: F487N num_exp: 1 time_per_exp: 180S s_to_n: 50 fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO req_1: SEQ 1-3 NO GAP; req_2: CYCLE 0 / 1-3 ! linenum: 2.000 targname: 2411-ZELLNER config: PC opmode: IMAGE aperture: P6 sp_element: F555W num_exp: 1 time_per_exp: 100S s_to_n: 50 fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=YES, param_2: CR-SPLIT=NO req_1: SPATIAL-SCAN ! linenum: 3.000 targname: 2411-ZELLNER config: PC opmode: IMAGE aperture: P6 sp_element: F555W num_exp: 1 time_per_exp: 60S s_to_n: 50 fluxnum_1: 1 priority: 1 param_1: PRE-FLASH=NO, param_2: CR-SPLIT=NO ! ! end of exposure logsheet scan_data: line_list: 2.0 fgs_scan: N cont_dwell: C dwell_pnts: 0 dwell_secs: 0.00 scan_width: 0.0000 scan_length: 2.5000 sides_angle: 0.0000 number_lines: 1 scan_rate: 0.0250 first_line_pa: 0.0000 scan_frame: CEL len_offset: 0.0 wid_offset: 0.0 ! ! end of scan data