! $Id: 5590,v 4.1 1994/07/27 19:36:08 pepsa Exp $ coverpage: title_1: CYCLE 4 DD HST OBSERVATIONS OF COMET SHOEMAKER-LEVY (1993E) sci_cat: SOLAR SYSTEM sci_subcat: COMETS proposal_for: GO/DD pi_fname: HAROLD pi_mi: A. pi_lname: WEAVER pi_inst: STSCI pi_country: USA hours_pri: 8.33 num_pri: 1 wf_pc: Y fos: N realtime: N time_crit: Y funds_length: 12 off_fname: HERVEY off_mi: S. off_lname: STOCKMAN off_title: DEPUTY DIRECTOR off_inst: 3470 off_addr_1: SPACE TELESCOPE SCIENCE INSTITUTE off_addr_2: 3700 SAN MARTIN DRIVE off_city: BALTIMORE off_state: MD off_zip: 21218 off_country: USA ! end of coverpage abstract: line_1: Comet Shoemaker-Levy (1993e) is a comet that has recently broken line_2: up into many fragments, apparently somewhere in the vicinity line_3: of Jupiter. Ground-based observations reveal a string of sub-nuclei line_4: spaced over a distance of about one arcminute. HST observations line_5: of this object with the WFPC-2 should reveal a fascinating spatial line_6: morphology that is more detailed than any images obtained from line_7: ground-based telescopes. Most importantly, WFPC-2 images of 1993e line_8: should allow us to refine the nuclear size estimates that were line_9: originally estimated from WFPC-1 HST observations in July 1993. ! ! end of abstract general_form_proposers: lname: WEAVER fname: HAROLD title: PI mi: A. inst: STSCI country: USA ! ! end of general_form_proposers block general_form_text: question: 3 section: 1 line_1: The program consists of five separate visits to the comet with line_2: two orbits required for each visit. Each of the visits is to line_3: a different target. It is scientifically desirable to schedule line_4: all of the observations as close in time as possible, but this line_5: is a GOAL and not a firm requirement. We hope that all 10 orbits line_6: of data can be collected within one week or less, but we will line_7: take what we can get. It is very important to execute this line_8: program as early as possible in SMOV, but the telescope must line_9: be well-focussed and the throughput reasonably well-characterized line_10: BEFORE doing these observations. line_12: The observing program has been divided into 5 SUs with each line_13: SU having 2 orbits. The orbit-by-orbit breakdown of the program is: line_15: SU 01: line_16: orbit 1: Two 800 sec WFC images of SL-COL line_17: orbit 2: Two 1000 sec WFC images of SL-COL line_18: SU 02: line_19: orbit 3: Two 800 sec PC images of SL-7 line_20: orbit 4: Two 1000 sec PC images of SL-7 ! question: 3 section: 2 line_1: SU 03: line_2: orbit 5: Two 800 sec WFC images of SL-15 line_3: orbit 6: Two 1000 sec WFC images of SL-15 line_4: SU 04: line_5: orbit 7: Two 800 sec PC images of SL-15 with F555W line_6: orbit 8: Two 1000 sec PC images of SL-15 with F555W line_7: SU 05: line_8: orbit 9: Two 800 sec PC images of SL-7 line_9: orbit 10: Two 1000 sec PC images of SL-7 line_11: Note that we wish to do the observations in order (i.e., SU 01 is line_12: first, SU 02 is second, etc.). ! question: 3 section: 3 line_1: ! question: 4 section: 1 line_1: HST observations of Comet Shoemaker-Levy (1993e) should provide line_2: better detail on the break-up of this object than is available line_3: from any other source. ! question: 4 section: 2 line_1: ! question: 4 section: 3 line_1: ! question: 5 section: 1 line_1: ! ! question: 8 section: 1 line_1: ! question: 9 section: 1 line_1: ID no. 3064: HST Observations of Comet Levy (1990c) line_2: (A'Hearn, Arpigny, and Feldman are Co-Is), an imaging-only line_3: program that is only peripherally related to the line_4: current program. line_6: ID no. 2481: HST Observations of Periodic Comets (A'Hearn, Arpigny, line_7: and Feldman are Co-Is), only peripherally related to this program. line_9: ID no. 2483: The Volatile Composition of New Comets (A'Hearn, Arpigny, line_10: and Feldman are Co-Is), only peripherally related to this program. line_12: ID no. 2442: Cometary Parent Molecules, P.D. Feldman, PI (A'Hearn line_13: and Weaver are Co-Is), only peripherally related to this program. line_15: Cycle 2 program: line_16: ID no. 3707: HST Observations of Periodic Comets (A'Hearn, Arpigny, line_17: and Feldman are Co-Is), only peripherally related to this program. ! question: 9 section: 2 line_1: ID no. 3064: Two sets of WFC images of comet Levy were obtained 6.5 line_2: hours apart on 27 September 1990 in order to investigate its temporal line_3: variability. An arc of large grains was observed propagating line_4: sunward with a projected velocity of 0.16 km/sec. line_6: ID no. 2481: P/Hartley 2 was successfully observed in late 9/91 line_7: These observations produced the first detection of CO Cameron bands in line_8: comets. This emission is essentially a unique tracer of the CO2 line_9: abundance in comets. Additionally we obtained a beautiful spectrum line_10: of the comet covering the entire spectral range 1200-6800 A, from line_11: which we are compiling (still in progress) an inventory of volatiles line_12: in that comet. line_14: ID no. 2483: Comet Shoemaker-Levy (1991a1) was successfully observed line_15: in July 1992. Unfortunately, the comet was not as bright as we had line_16: hoped, but we obtained data of comparable (slightly higher) quality line_17: to that already in hand from P/Hartley 2. We definitely detected line_18: the CO Cameron bands again, but it is much too early to say anything line_19: more at this time. line_21: ID no. 2442: Comet Shoemaker-Levy (1991a1) was successfully observed line_22: in July 1992, but it is too early to say anything more at this time. ! question: 9 section: 3 line_1: ID no. 3064: Inner Coma Imaging of Comet Levy (1990c) with the Hubble line_2: Space Telescope, H. A. Weaver, M. F. A'Hearn, P. D. Feldman, line_3: C. Arpigny, W. A. Baum, J. C. Brandt, R. M. Light and line_4: J. A. Westphal,Icarus}, v. 97, p. 85, 1992. line_6: ID no. 2481: Probing the Nature of Comets with HST, H. A. Weaver line_7: and P. D. Feldman, in "Science with the Hubble Space Telescope", line_8: ESA-NASA CP, in press. line_10: Presentations on both the above programs have been made at several line_11: scientific meetings, including the annual DPS meetings in 1990 line_12: (for 3064), 1991 (for 2481), and 1992 (2481 and 2483). A paper line_13: on our detection of CO Cameron band emission in P/Hartley 2 line_14: will be submitted to a refereed journal shortly. ! question: 10 section: 1 line_1: The STScI has excellent data-analysis capabilities and also maintains line_2: a pool of Science Data Analysts (SDAs) that are available to its staff. line_3: However, SDA support for our program can only be assured if we are line_4: allocated money to cover the SDA's salary. line_6: The other institutions co-sponsoring this program also have excellent line_7: data analysis facilities and access to graduate students and research line_8: assistants. However, funds must be provided by this program in order line_9: for the Co-Is to utilize these resources. ! !end of general form text general_form_address: lname: Weaver fname: Harold mi: A title: Dr. category: PI inst: 3470 addr_1: 3700 San Martin Drive city: Baltimore state: MD zip: 21218 country: USA phone: 410-338-5004 ! lname: Weaver fname: Harold mi: A. title: Dr. category: PI inst: STScI addr_1: 3700 San Martin Drive addr_2: Baltimore, MD 21218 addr_3: USA city: Baltimore state: MD zip: 21218 country: USA phone: 410-516-8619 ! ! end of general_form_address records ! No fixed target records found solar_system_targets: targnum: 1 name_1: SL-COL descr_1: COMET SHOEMAKER-LEVY 1993E-COL lev1_1: FILE = SL9-K, lev1_2: ACQ = 3 comment_1: THIS TARGET IS THE CENTER OF comment_2: LIGHT OF COMET SL 1993E. comment_3: OPTIMUM OBSERVING TIME IS ASAP. comment_4: SINCE THE COMET GETS MORE AND comment_5: EXTENDED WITH TIME, WE LOSE MORE comment_6: OF THE COMET THE LATER WE GO. comment_7: TARGET IS NUCLEUS NEAREST COL comment_8: SINCE UPDATED EPHEMERIDES ARE comment_9: NOT AVAILABLE FOR THE COL. fluxnum_1: 1 fluxval_1: SURF(V) = 24 +/- 1 fluxnum_2: 2 fluxval_2: SIZE = 0.1 ! targnum: 2 name_1: SL-7 descr_1: COMET SHOEMAKER-LEVY 1993E-7 lev1_1: FILE = SL-7, lev1_2: ACQ = 3 comment_1: THIS TARGET IS THE BRIGHTEST comment_2: NUCLEUS OF COMET SL 1993E. comment_3: OPTIMUM OBSERVING TIME IS ASAP. comment_4: SINCE THE COMET GETS MORE AND comment_5: EXTENDED WITH TIME, WE LOSE MORE comment_6: OF THE COMET THE LATER WE GO. fluxnum_1: 1 fluxval_1: SURF(V) = 24 +/- 1 fluxnum_2: 2 fluxval_2: SIZE = 0.1 ! targnum: 3 name_1: SL-15 descr_1: COMET SHOEMAKER-LEVY 1993E-15 lev1_1: FILE = SL-15, lev1_2: ACQ = 3 comment_1: THIS TARGET IS A BRIGHT WELL comment_2: ISOLATED NUCLEUS OF COMET SL 1993E. comment_3: OPTIMUM OBSERVING TIME IS ASAP. comment_4: SINCE THE COMET GETS MORE AND comment_5: EXTENDED WITH TIME WE LOSE MORE comment_6: OF THE COMET THE LATER WE GO. fluxnum_1: 1 fluxval_1: SURF(V) = 24 +/- 1 fluxnum_2: 2 fluxval_2: SIZE = 0.1 ! targnum: 4 name_1: SL-3 descr_1: COMET SHOEMAKER-LEVY 1993E-3 lev1_1: FILE = SL9-S, lev1_2: ACQ = 3 comment_1: THIS TARGET IS NUCLEUS NEAR comment_2: THE SW END OF COMET SL 1993E. comment_3: OPTIMUM OBSERVING TIME IS ASAP. comment_4: SINCE THE COMET GETS MORE AND comment_5: EXTENDED WITH TIME, WE LOSE MORE comment_6: OF THE COMET THE LATER WE GO. comment_7: TARGET IS NUCLEUS S=5, NOT U=3, comment_8: SINCE UPDATED EPHEMERIDES ARE comment_9: NOT AVAILABLE FOR NUCLEUS 3. fluxnum_1: 1 fluxval_1: SURF(V) = 24 +/- 1 fluxnum_2: 2 fluxval_2: SIZE = 0.1 ! ! end of solar system targets ! No generic target records found exposure_logsheet: linenum: 1.100 targname: SL-COL config: WFPC2 opmode: IMAGE aperture: WF3 sp_element: F702W num_exp: 1 time_per_exp: 800 S param_1: CR-SPLIT=NO req_1: CYCLE 4 / 1.1-5.4; req_2: POS TARG +37,0; req_3: ORIENT +20D +/- 20D req_4: FROM NOMINAL / 1.1-5.4; req_5: GUID TOL 0.2" / 1.1-5.4; comment_1: FIRST WFC IMAGE. comment_2: THE CENTER OF LIGHT IS comment_3: NEAR THE BORDER OF WF3-WF4 comment_4: SO THAT THE ENTIRE TRAIN IS comment_5: CAPTURED IN THE IMAGE. ! linenum: 1.200 targname: SL-COL config: WFPC2 opmode: IMAGE aperture: WF3 sp_element: F702W num_exp: 1 time_per_exp: 800 S param_1: CR-SPLIT=NO req_1: POS TARG +37,0 comment_1: SECOND WFC IMAGE. comment_2: THE CENTER OF LIGHT IS comment_3: NEAR THE BORDER OF WF3-WF4 comment_4: SO THAT THE ENTIRE TRAIN IS comment_5: CAPTURED IN THE IMAGE. ! linenum: 1.300 targname: SL-COL config: WFPC2 opmode: IMAGE aperture: WF3 sp_element: F702W num_exp: 1 time_per_exp: 1000 S param_1: CR-SPLIT=NO req_1: POS TARG +37,0 comment_1: THIRD WFC IMAGE. comment_2: THE CENTER OF LIGHT IS comment_3: NEAR THE BORDER OF WF3-WF4 comment_4: SO THAT THE ENTIRE TRAIN IS comment_5: CAPTURED IN THE IMAGE. ! linenum: 1.400 targname: SL-COL config: WFPC2 opmode: IMAGE aperture: WF3 sp_element: F702W num_exp: 1 time_per_exp: 1000 S param_1: CR-SPLIT=NO req_1: POS TARG +37,0 comment_1: FOURTH WFC IMAGE. comment_2: THE CENTER OF LIGHT IS comment_3: NEAR THE BORDER OF WF3-WF4 comment_4: SO THAT THE ENTIRE TRAIN IS comment_5: CAPTURED IN THE IMAGE. ! linenum: 2.100 targname: SL-7 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 800 S param_1: CR-SPLIT=NO comment_1: FIRST PC IMAGE NEAR SL-7. ! linenum: 2.200 targname: SL-7 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 800 S param_1: CR-SPLIT=NO comment_1: SECOND PC IMAGE NEAR SL-7. ! linenum: 2.300 targname: SL-7 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 1000 S param_1: CR-SPLIT=NO comment_1: THIRD PC IMAGE NEAR SL-7. ! linenum: 2.400 targname: SL-7 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 1000 S param_1: CR-SPLIT=NO comment_1: FOURTH PC IMAGE NEAR SL-7. ! linenum: 3.100 targname: SL-15 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 800 S param_1: CR-SPLIT=NO comment_1: FIRST PC IMAGE NEAR SL-15. ! linenum: 3.200 targname: SL-15 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 800 S param_1: CR-SPLIT=NO comment_1: SECOND PC IMAGE NEAR SL-15. ! linenum: 3.300 targname: SL-15 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 1000 S param_1: CR-SPLIT=NO comment_1: THIRD PC IMAGE NEAR SL-15. ! linenum: 3.400 targname: SL-15 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 1000 S param_1: CR-SPLIT=NO comment_1: FOURTH PC IMAGE NEAR SL-15. ! linenum: 4.100 targname: SL-15 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F555W num_exp: 1 time_per_exp: 800 S param_1: CR-SPLIT=NO comment_1: FIRST PC IMAGE NEAR SL-15 comment_2: USING F555W. ! linenum: 4.200 targname: SL-15 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F555W num_exp: 1 time_per_exp: 800 S param_1: CR-SPLIT=NO comment_1: SECOND PC IMAGE NEAR SL-15 comment_2: USING F555W. ! linenum: 4.300 targname: SL-15 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F555W num_exp: 1 time_per_exp: 1000 S param_1: CR-SPLIT=NO comment_1: THIRD PC IMAGE NEAR SL-15 comment_2: USING F555W. ! linenum: 4.400 targname: SL-15 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F555W num_exp: 1 time_per_exp: 1000 S param_1: CR-SPLIT=NO comment_1: FOURTH PC IMAGE NEAR SL-15 comment_2: USING F555W. ! linenum: 5.100 targname: SL-3 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 800 S param_1: CR-SPLIT=NO comment_1: FIRST PC IMAGE NEAR SL-3. ! linenum: 5.200 targname: SL-3 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 800 S param_1: CR-SPLIT=NO comment_1: SECOND PC IMAGE NEAR SL-3. ! linenum: 5.300 targname: SL-3 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 1000 S param_1: CR-SPLIT=NO comment_1: THIRD PC IMAGE NEAR SL-3. ! linenum: 5.400 targname: SL-3 config: WFPC2 opmode: IMAGE aperture: PC1-FIX sp_element: F702W num_exp: 1 time_per_exp: 1000 S param_1: CR-SPLIT=NO comment_1: FOURTH PC IMAGE NEAR SL-3. ! ! end of exposure logsheet ! No scan data records found