! Proposal 6663, submission 4 ! PI: Harold Weaver ! Received Mon Aug 19 11:49:47 EDT 1996 ! From: storrs@stsci.edu ! Proposal 6663, submission 2 ! PI: Harold Weaver ! Received Thu Jun 20 09:33:45 EDT 1996 ! From: storrs@stsci.edu ! Proposal 6663, submission 1 ! PI: Harold Weaver ! Received Wed Mar 13 18:10:23 EST 1996 ! From: lubenow@stsci.edu ! Hubble Space Telescope Cycle 6 (1996) Phase II Proposal Template ! $Id: 6663,v 8.1 1996/08/21 21:36:29 pepsa Exp $ ! Hubble Space Telescope Cycle 6 (1996) Phase II Proposal Template ! $Id: 6663,v 8.1 1996/08/21 21:36:29 pepsa Exp $ ! ! Refer to the HST Phase II Proposal Instructions to fill this out ! ! Anything after a "!" is ignored, and may be deleted ! ! All keywords with multiple entries are comma delimited except the ! Visit_Requirements and Special_Requirements keywords which can be ! delimited with carriage returns or semi-colons, but not commas ! ! For help call your Program Coordinator: Lubenow ! Phone: 410-338-4928 , E-mail: lubenow@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. ! Name of Phase I Proposal: archive-0710.weaver.prop ! Date generated: Fri Dec 22 16:18:30 EST 1995 ! ! This is version "e" of the rps2 file for GO-6663 and was submitted ! to the STScI on 8/19/96. I downloaded the STScI version on the WWW ! as of 8/16/96 and then modified that file. This file differs from the ! "c" version in several respects: ! 1) I have replaced FOS ACQ IMAGE with FOS ACQ/PEAKs for ! all visits after visit 2, ! 2) I have updated the orbital elements to JPL-35 for ! targets HALE-BOPP 2-4. ! This version differs from the "d" version in that I increased the ! exposure time on the FOS ACQ/PEAKups from 1 sec to 5 sec (just to ! be on the safe side) for the Sep and Oct 1996 observations and I ! changed the SR for the ONBOARD ACQs to ensure that the offset generated ! by the onboard acq is applied ! to all subsequent exposures. Proposal_Information ! Section 4 Title: Systematic Investigation of C/1995 O1 (Hale-Bopp) Proposal_Category: GO Scientific_Category: SOLAR SYSTEM Cycle: 6 Investigators PI_name: Harold Weaver PI_Institution: Johns Hopkins University CoI_Name: Michael A'Hearn CoI_Institution: University of Maryland, College Park Contact: ! Y or N (designate at most one contact) CoI_Name: Claude Arpigny CoI_Institution: Universite de Liege Contact: ! Y or N (designate at most one contact) CoI_Name: Jack Brandt CoI_Institution: University of Colorado Contact: ! Y or N (designate at most one contact) CoI_Name: Paul Feldman CoI_Institution: Johns Hopkins University Contact: ! Y or N (designate at most one contact) CoI_Name: Cora Randall CoI_Institution: University of Colorado Contact: ! Y or N (designate at most one contact) CoI_Name: Alan Stern CoI_Institution: Southwest Research Institute Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) We propose a systematic imaging and spectroscopic investigation of comet C/1995 O1 (Hale-Bopp). The comet will be monitored over a wide range of heliocentric distances, providing unique information on the sublimation behavior of this unusual object. The images will be used to place sensitive constraints on the size of the nucleus, search for possible companion nuclei, and examine the near-nucleus coma morphology for evidence of jets and shells. Spectroscopic exposures will allow us to place constraints on the source of cometary activity at large heliocentric distance and detect the onset of water sublimation. If near-perihelion observations are permitted, we will conduct deep searches for new species at unprecedented sensitivity, compile an inventory of the important C-, H-, N-, O-, and S-bearing species in the nucleus, measure the OD/OH ratio, and possibly even physically resolve the nucleus. If this comet achieves its expected brightness, the quality of the HST near-perihelion data will truly be spectacular and will provide fundamental, new insights into the nature of comets. Questions ! Free format text (please update) Observing_Description: This is the Cycle 6 program on Comet Hale-Bopp (C/1995 O1). We were awarded a total of 18 orbits of observing time. We will be observing during four different epochs: late-July to early-August 1996, mid-September 1996, mid- to late-October 1996, and early- to mid-March 1997. The latter observations will be executed only if the normal solar elongation constraint is over-ridden and the second servicing mission is delayed. Observations during the first three epochs (i.e., during 1996) all employ the same strategy. Each consists of two visits: the first has one orbit devoted to PC imaging and the second has three orbits devoted to FOS spectroscopy. Observations during the last epoch (i.e., during March 1997) consist of six visits with 1 orbit per visit (due to the limited visibility window per orbit, all of these latter observations will be done under GYRO control following a GS ACQ in a nearby field). The first visit has one orbit of PC imaging, visits 2 and 3 are for FOS spectroscopy, visit 4 is for GHRS low res spectroscopy, and the last two visits are for GHRS hi res spectroscopy. Even though there is only one target for this program (Comet Hale-Bopp), we have defined a separate target number for each of the four observing epochs so that we can use different orbital elements for each period and also keep track of what we are doing. Please note that the REMEMBER OFFSET capability is used in this program. Based on our analysis of the PC images, we will want to uplink pointing corrections for the subsequent spectroscopic observations. Since we may also uplink an offset pointing prior to the PC images, the remember offset table should be setup with two entries: the first is the one to be used prior to the PC images (and which may very well be zero for the 1996 Hale-Bopp observations) and the second is the offset determined from measurements made on the PC images. Both offset commands should be executed prior to the spectrograph observation. The offset values are named "HALBPx" below and there is a pair of such values for each visit. Within a single visit, we request that the same GS pair be used for all orbits, whenever possible. We will use GUID TOL = 0.2" for all visits to permit using the GS Handoff capability, if the latter looks attractive. We also use SCHED = 100% in order to increase scheduling flexibility. If the activities in the imaging orbit over-run the target visibility window, then you should trim the THIRD F439W exp time to get under the limit. The specific plan is: Visit 1: BETWEEN 24-JUL-96 AND 07-AUG-96 SEQ 1-2 WITHIN 24H GUID TOL 0.2" SCHED 100% orbit 1: PC imaging req ephem corr save offset Visit 2: GUID TOL 0.2" SCHED 100% orbit 1: FOS/BL ACQ + FOS/BL G190H req ephem corr use offset orbit 2: FOS/BL + FOS/BL G190H req ephem corr use offset orbit 3: FOS/RD + FOS/RD G270H req ephem corr use offset Visit 3: BETWEEN 09-SEP-96 AND 22-SEP-96 SEQ 3-4 WITHIN 24H GUID TOL 0.2" SCHED 100% orbit 1: PC imaging req ephem corr save offset Visit 4: GUID TOL 0.2" SCHED 100% orbit 1: FOS/BL ACQ + FOS/BL G190H req ephem corr use offset orbit 2: FOS/BL + FOS/BL G190H req ephem corr use offset orbit 3: FOS/RD + FOS/RD G270H req ephem corr use offset Visit 5: BETWEEN 14-OCT-96 AND 29-OCT-96 SEQ 5-6 WITHIN 24H GUID TOL 0.2" SCHED 100% orbit 1: PC imaging req ephem corr save offset Visit 6: GUID TOL 0.2" SCHED 100% orbit 1: FOS/BL ACQ + FOS/BL G190H req ephem corr use offset orbit 2: FOS/BL + FOS/BL G190H req ephem corr use offset orbit 3: FOS/RD + FOS/RD G270H req ephem corr use offset Visit 7: BETWEEN 01-MAR-97 AND 21-MAR-97 SEQ 7-9 WITHIN 24H GUID TOL 0.2" SCHED 100% orbit 1: PC imaging req ephem corr save offset Visit 8: GUID TOL 0.2" SCHED 100% orbit 1: FOS/BL ACQ + FOS/BL G190H req ephem corr use offset Visit 9: GUID TOL 0.2" SCHED 100% orbit 1: FOS/RD ACQ + FOS/RD G270H req ephem corr use offset Visit 10: GUID TOL 0.2" SCHED 100% orbit 1: GHRS G140L (1295-1580) req ephem corr use offset Visit 11: BETWEEN 01-MAR-97 AND 21-MAR-97 GUID TOL 0.2" SEQ 11-12 WITHIN 6H SCHED 100% orbit 1: GHRS ECH-B (3079) req ephem corr use offset Visit 12: BETWEEN 01-MAR-97 AND 21-MAR-97 GUID TOL 0.2" SCHED 100% orbit 1: GHRS ECH-B (3079) req ephem corr use offset Real_Time_Justification: See the detailed discussion above. We expect to be doing supporting sub-mm, IR and optical observations, but no specific plans have yet been made. Calibration_Justification: ! Move appropriate text from Real_Time_Justification Additional_Comments: Solar_System_Targets ! Section 5.2 Target_Number: 1 Target_Name: HALE-BOPP-1 Description: COMET HALE-BOPP Level_1: TYPE = COMET , ! Satellite of Sun Q = 0.914887986, E = 0.99550897, I = 89.436722, O = 282.473920, W = 130.540972, T = 01-APR-97:02:47:37, EQUINOX = J2000, EPOCH = 16-JUL-96 Ephem_Uncert: 5000 KM Acq_Uncert: 5" Window: Flux: V = 15 ! Include at least V and B-V B-V = 0.8 V-R = 0.4 Comments: V-mag is for 0.7 arcsec diameter aperture. Elements are from Yeomans Solution 32. Target_Number: 2 Target_Name: HALE-BOPP-2 Description: COMET HALE-BOPP Level_1: TYPE = COMET , ! Satellite of Sun Q = 0.914852863, E = 0.99554324, I = 89.438282, O = 282.473691, W = 130.539365, T = 01-APR-97:02:08:53.06, EQUINOX = J2000, EPOCH = 16-JUL-96 Ephem_Uncert: 5000 KM Acq_Uncert: 5" Window: Flux: V = 15 ! Include at least V and B-V B-V = 0.8 V-R = 0.4 Comments: V-mag is for 0.7 arcsec diameter aperture. Elements are from Yeomans Solution 35. Target_Number: 3 Target_Name: HALE-BOPP-3 Description: COMET HALE-BOPP Level_1: TYPE = COMET , ! Satellite of Sun Q = 0.914852863, E = 0.99554324, I = 89.438282, O = 282.473691, W = 130.539365, T = 01-APR-97:02:08:53.06, EQUINOX = J2000, EPOCH = 16-JUL-96 Ephem_Uncert: 5000 KM Acq_Uncert: 5" Window: Flux: V = 15 ! Include at least V and B-V B-V = 0.8 V-R = 0.4 Comments: V-mag is for 0.7 arcsec diameter aperture. Elements are from Yeomans Solution 35. Target_Number: 4 Target_Name: HALE-BOPP-4 Description: COMET HALE-BOPP Level_1: TYPE = COMET , ! Satellite of Sun Q = 0.914852863, E = 0.99554324, I = 89.438282, O = 282.473691, W = 130.539365, T = 01-APR-97:02:08:53.06, EQUINOX = J2000, EPOCH = 16-JUL-96 Ephem_Uncert: 5000 KM Acq_Uncert: 5" Window: Flux: V = 15 ! Include at least V and B-V B-V = 0.8 V-R = 0.4 Comments: V-mag is for 0.7 arcsec diameter aperture. Elements are from Yeomans Solution 35. ! This is a template for a single visit containing a single exposure ! Repeat exposure and visit blocks as needed ! Uncomment or copy visit level special requirements needed ! Most of these requirements (including ORIENT) will limit scheduling ! PCS MODE [Fine | Gyro] ! GUIDing TOLerance ! DROP TO GYRO IF NECESSARY [NO REACQuisition] ! ORIENTation TO ! ORIENTation TO FROM ! ORIENTation TO FROM NOMINAL ! SAME ORIENTation AS ! CVZ ! PARallel ! SCHEDulability ! AFTER [BY [TO ]] ! AFTER ! BEFORE ! BETWEEN AND ! GROUP WITHIN