! Hubble Space Telescope Cycle 5 (1995) Phase II Proposal Template ! $Id: 6062,v 7.1 1995/11/27 19:18:10 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: Denise Taylor ! Phone: 410 338-4824 , E-mail: dctaylor@stsci.edu ! ! This partially completed template was generated from a Phase I proposal. ! Date generated: Sun Dec 18 11:54:39 EST 1994 ! Proposal_Information ! Section 4 Title: HD 98800, An Extraordinary K Star Proposal_Category: GO Scientific_Category: Cool Stars Cycle: 5 Investigators PI_name: David Soderblom PI_Institution: Space Telescope Science Institute CoI_Name: Todd Henry CoI_Institution: Space Telescope Science Institute Contact: ! Y or N (designate at most one contact) CoI_Name: Robert Brown CoI_Institution: Space Telescope Science Institute Contact: ! Y or N (designate at most one contact) CoI_Name: Keith Noll CoI_Institution: Space Telescope Science Institute Contact: ! Y or N (designate at most one contact) CoI_Name: Christopher Burrows CoI_Institution: Space Telescope Science Institute Contact: ! Y or N (designate at most one contact) CoI_Name: David Latham CoI_Institution: Harvard-Smithsonian Ctr. for Astrophys. Contact: ! Y or N (designate at most one contact) CoI_Name: Guillermo Torres CoI_Institution: Harvard-Smithsonian Ctr. for Astrophys. Contact: ! Y or N (designate at most one contact) CoI_Name: Robert Stefanik CoI_Institution: Harvard-Smithsonian Ctr. for Astrophys. Contact: ! Y or N (designate at most one contact) CoI_Name: Fritz Benedict CoI_Institution: McDonald Observatory Contact: ! Y or N (designate at most one contact) Abstract: ! Free format text (please update) HD 98800 is a nearby K star (possibly a dwarf at about 12 pc or maybe a pre-main sequence star at 30 to 35 pc) that is extraordinary because at least 10\ reradiated in the infrared. Basic geometry tells us that that material must form a very thick disk, yet such disks collapse very quickly. How then is the disk's thickness maintained? What kind of star is HD 98800? More precisely, what kind of stars are HD 98800, for there are, in fact, two visible objects, and each of these is a spectroscopic binary. How did this system, which is probably very young, come to be in the immediate solar neighborhood? This proposal seeks HST observations to address the fundamental questions about disk formation, maintenance, and dynamics that the infrared observations of HD 98800 raise. The FGSs will be used to determine parallaxes for both objects. That will unambiguously confirm or deny that the two visible objects are physically related and will provide luminosities for both of them, thereby establishing evolutionary status. The GHRS will be used to obtain spectra of both visible objects to gain supporting evidence for their physical association by looking at the strength of Mg\ ii\ 2800 Angstrom\ emission. Finally, WFPC2 will be used to attempt to directly image the disk itself. Questions ! Free format text (please update) Observing_Description: FGS Observations: To determine the parallaxes of the two visible objects we need to use the FGSs in POS mode. Fritz Benedict is our expert in this area and he has determined that there are 6 reference objects nearby that are brighter than V=16. We will need three visits 6 months apart of two orbits each, hence the overlap into Cycle 6. This should provide one milliarcsec precision for the parallaxes. GHRS Observations: The Small Science Aperture of the GHRS is 0.22 arcsec square, easily allowing each of the visible objects to be observed independently of the other. A ten-minute exposure on both objects will provide adequate detectability of the Mg ii 2800 Angstrom\ lines at the strength we anticipate (which is high) with G270M, and that can easily fit within an orbit when the acquisition and overheads are included. WFPC2 Observations: These are the most difficult to define, for we cannot be sure exactly what we're looking for until we find it. We recognize that detecting what may be very faint surface emission close to fairly bright stars won't be easy, especially when there are a pair of stars to contend with. But we feel it is senseless to put an effort into understanding the disk structure of HD 98800 without at least trying to actually detect the disk itself. The WFPC2 exposures we want are exploratory, so that if we find something we'll come back for a more quantitative study at a later date. Given that the disk light is scattered, detection may be more likely in polarized light, and we have asked for two visits to obtain two different orientations of the polarizers. The WFPC2 images will also be valuable for determining the precise positions of the targets and reference stars for the GHRS and FGS observations. Ground- based data exist, of course, but using WFPC2 images for this purpose will ensure that our coordinates have both high precision and accuracy and will protect against acquisition failures. Our WFPC2 scenario proceeds as follows: beginitemize em First we get multicolor observations to study the stellar components in the field. We have chosen the narrow-band filters F658N and F953N because the stars are bright; these should pick up stellar continuum. Integration times for the two filters are 0.60 and 0.80 seconds, respectively. Included in this set are the F439W observations, which can then provide good colors for both visible objects and perhaps evidence of the companions we now see only spectroscopically (they may be barely resolvable if HD 98800 is a dwarf at 12 pc). em Second we search for the disk. Here we use the F439W filter (``B''), both with- and without the polarizer. Both methods have advantages and disadvantages. Using the polarizer may make it easier to see light scattered from the disk in the vicinity of the bright star light, but at the same time the background in broad regions of the field is ``enhanced.'' We have elected to hedge our bets by trying both kinds of exposures, and the short exposure without the polarizer should help us calibrate the exposures with the polarizer. The exposures have been broken down into shorter segments for cosmic-ray removal. Obtaining observations at two different roll angles will help to disentangle effects are confirm potential detections. enditemize We ask that the WFPC2 images be obtained in two separate visits. Their timing should be such that the orientations at the two times differ by about 60 to 90 degrees. The first WFPC2 image should preceed either the GHS or FGS observations so as to allow high-precision coordinates to be determined for the targets and reference stars. POS and TRANS in same orbit. POS mode observations near end of each orbit can be deleted in order to schedule during the required times. Schedule is important, since target star will have maximimum parallax factor near these times. Calibration_Justification: Keep those LTSTABs coming!! Additional_Comments: TWEAK POSITIONS ONCE GSSS PRODUCTS SHOW UP!! June visit may require single GS guiding. Please use this mode, if necessary. Fixed_Targets Target_Number: 1 Target_Name: HD98800 Alternate_Names: Description: STAR, K V-IV Position: RA=170.5243708D +/- 0.00014D, DEC= -24.7778389D +/- 0.00014D Equinox: J2000 Epoch: 1976.42 Rv_or_z: RA_PM: -0.0065 Dec_PM: -0.023 Annual_Parallax: 0.04 Flux: V = 8.9 +/- 0.1 Comments: Target_Number: 2 Target_Name: HD98800-2-REF Alternate_Names: ref-82 Description: CALIBRATION,ASTROMETRIC, Position: RA=170.5621917D +/- 0.00014D, DEC= -24.8181669D +/- 0.00014D Equinox: J2000 Epoch: Rv_or_z: RA_PM: 0.0 Dec_PM: 0.0 Annual_Parallax: 0.0 Flux: V = 15.4 +/- 0.2 Comments: STAR 82 IN GFB LIST ! Target_Number: 3 ! Target_Name: HD98800-3-REF ! Alternate_Names: ref-118 ! Description: CALIBRATION,ASTROMETRIC, ! Position: RA=170.5063833D +/- 0.00014D, ! DEC= -24.7858969D +/- 0.00014D ! Equinox: J2000 ! Epoch: ! Rv_or_z: ! RA_PM: 0.0 ! Dec_PM: 0.0 ! Annual_Parallax: 0.0 ! Flux: V = 16.60 +/- 0.2 ! Comments: STAR 118 IN GFB LIST Target_Number: 3 Target_Name: HD98800-4-REF Alternate_Names: ref-144 Description: CALIBRATION,ASTROMETRIC, Position: RA=170.5234708D +/- 0.00014D, DEC= -24.7653939D +/- 0.00014D Equinox: J2000 Epoch: Rv_or_z: RA_PM: 0.0 Dec_PM: 0.0 Annual_Parallax: 0.0 Flux: V = 15.4 +/- 0.2 Comments: STAR 144 IN GFB LIST Target_Number: 4 Target_Name: HD98800-5-REF Alternate_Names: ref-180 Description: CALIBRATION,ASTROMETRIC, Position: RA=170.4876458D +/- 0.00014D, DEC= -24.7257781D +/- 0.00014D Equinox: J2000 Epoch: Rv_or_z: RA_PM: 0.0 Dec_PM: 0.0 Annual_Parallax: 0.0 Flux: V = 10.8 +/- 0.2 Comments: STAR 180 IN GFB LIST Target_Number: 5 Target_Name: HD98800B Alternate_Names: Description: STAR, K V-IV Position: R=0.84", PA=3.6D, FROM 1 Equinox: J2000 Epoch: 1995.1 Rv_or_z: RA_PM: Dec_PM: Annual_Parallax: 0.04 Flux: V = 9.5 +/- 0.1 Comments: ! This is a template for a single visit containing a single exposure ! Repeat exposure and visit blocks as needed Visits Visit_Number: 01 Visit_Requirements: BETWEEN 25-DEC-1995:00:00:00 AND 31-DEC-1995:23:22:27; ORIENT 315.0D to 317.0D; On_Hold_Comments: Exposure_number: 103 Target_Name: HD98800 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements: POS TARG 0.0, 0.0;MAX DUR 52S SEQ 103-130 NON-INT;SEQ 151-178 NON-INT; Comments: FINE LOCK GUIDING: Denise, in order to schedule Visit 1 you will need to delete the last observation (maybe 2?) in each orbit. Exposure_number: 106 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements: MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 109 Target_Name: HD98800-4-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 112 Target_Name: HD98800-2-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 115 Target_Name: HD98800 Config: FGS Opmode: TRANS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: ACQ-MODE=SEARCH, SCANS=10, STEP-SIZE=1, DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 500S Special_Requirements: Comments: FINE LOCK GUIDING Exposure_number: 118 Target_Name: HD98800 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: FINE LOCK GUIDING Exposure_number: 121 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements:MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! Exposure_number: 124 Target_Name: HD98800-4-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! Exposure_number: 127 Target_Name: HD98800-2-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 130 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements:MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! !NEXT ORBIT. More time. Less GS overhead. Exposure_number: 151 Target_Name: HD98800 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements: POS TARG 0.0, 0.0;MAX DUR 52S SEQ 103-130 NON-INT Comments: FINE LOCK GUIDING Exposure_number: 154 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements: MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 157 Target_Name: HD98800-4-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 160 Target_Name: HD98800-2-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 163 Target_Name: HD98800 Config: FGS Opmode: TRANS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: ACQ-MODE=SEARCH, SCANS=15, STEP-SIZE=1, DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 750S Special_Requirements: Comments: FINE LOCK GUIDING Exposure_number: 166 Target_Name: HD98800 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: FINE LOCK GUIDING Exposure_number: 169 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements:MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! Exposure_number: 172 Target_Name: HD98800-4-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! Exposure_number: 175 Target_Name: HD98800-2-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 178 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements:MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! Visit_Number: 02 Visit_Requirements: BETWEEN 15-JUN-1996:00:00:00 AND 25-JUN-1996:23:22:27; ORIENT 134.0D to 136.0D; On_Hold_Comments: Exposure_number: 203 Target_Name: HD98800 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements: POS TARG 0.0, 0.0;MAX DUR 52S SEQ 203-230 NON-INT;SEQ 251-278 NON-INT; Comments: FINE LOCK GUIDING Exposure_number: 206 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements: MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 209 Target_Name: HD98800-4-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 212 Target_Name: HD98800-2-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 215 Target_Name: HD98800 Config: FGS Opmode: TRANS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: ACQ-MODE=SEARCH, SCANS=10, STEP-SIZE=1, DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 500S Special_Requirements: Comments: FINE LOCK GUIDING Exposure_number: 218 Target_Name: HD98800 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: FINE LOCK GUIDING Exposure_number: 221 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements:MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! Exposure_number: 224 Target_Name: HD98800-4-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! Exposure_number: 227 Target_Name: HD98800-2-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 230 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements:MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! !NEXT ORBIT. More time. Less GS overhead. Exposure_number: 251 Target_Name: HD98800 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements: POS TARG 0.0, 0.0;MAX DUR 52S SEQ 203-230 NON-INT Comments: FINE LOCK GUIDING Exposure_number: 254 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements: MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 257 Target_Name: HD98800-4-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 260 Target_Name: HD98800-2-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 263 Target_Name: HD98800 Config: FGS Opmode: TRANS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: ACQ-MODE=SEARCH, SCANS=15, STEP-SIZE=1, DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 750S Special_Requirements: Comments: FINE LOCK GUIDING Exposure_number: 266 Target_Name: HD98800 Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: FINE LOCK GUIDING Exposure_number: 269 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements:MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! Exposure_number: 272 Target_Name: HD98800-4-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE ! Exposure_number: 275 Target_Name: HD98800-2-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 52S Special_Requirements:MAX DUR 52S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Exposure_number: 278 Target_Name: HD98800-5-REF Config: FGS Opmode: POS Aperture: 3 Sp_Element: F583W Wavelength: Optional_Parameters: DATA-RATE=32 Number_of_iterations:1 Time_Per_Exposure: 32S Special_Requirements:MAX DUR 32S Comments: OBSERVE ONLY THOSE REFERENCE STARS WITHIN THE ASTROMETRY PICKLE Visit_Number: 03 On_Hold_Comments: Exposure_number: 310 Target_Name: HD98800 Config: HRS Opmode: ACQ Aperture: 2.0 Sp_Element: MIRROR-N2 Wavelength: Optional_Parameters: SEARCH-SIZE=3, BRIGHT=RETURN Number_of_iterations: 1 Time_Per_Exposure: 3.6S Special_Requirements: ONBOARD ACQ FOR 320 Comments: STEP-TIME=0.4 SEC ! Exposure_number: 320 Target_Name: HD98800 Config: HRS Opmode: ACQ/PEAKUP Aperture: 0.25 Sp_Element: MIRROR-N2 Wavelength: Optional_Parameters: SEARCH-SIZE=5 Number_of_iterations: 1 Time_Per_Exposure: 12.5S Special_Requirements: ONBOARD ACQ FOR 330 Comments: STEP-TIME=0.5 SEC ! Exposure_number: 330 Target_Name: HD98800 Config: HRS Opmode: ACCUM Aperture: 0.25 Sp_Element: G270M Wavelength: 2800 Optional_Parameters: FP-SPLIT=NO, STEP-PATT=DEF, COMB=FOUR, DOPPLER=DEF Number_of_iterations: 1 Time_Per_Exposure: 163.2S Special_Requirements: Comments: ! Exposure_number: 340 Target_Name: HD98800B Config: HRS Opmode: ACCUM Aperture: 0.25 Sp_Element: G270M Wavelength: 2800 Optional_Parameters: FP-SPLIT=NO, STEP-PATT=DEF, COMB=FOUR, DOPPLER=DEF Number_of_iterations: 1 Time_Per_Exposure: 380.8S Special_Requirements: Comments: ! Visit_Number: 04 Exposure_Number: 410 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F439W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:2 Time_Per_Exposure: 1.0S Special_Requirements: Comments: Expect worst case pixel to contain 2800 DN Exposure_Number: 420 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F439W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:2 Time_Per_Exposure: 100.0S Special_Requirements: Comments: Exposure_Number: 430 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F953N Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:2 Time_Per_Exposure: 0.80S Special_Requirements: Comments: Exposure_Number: 440 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F953N Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:2 Time_Per_Exposure: 80.0S Special_Requirements: Comments: Exposure_Number: 450 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:1 Time_Per_Exposure: 0.11S Special_Requirements: Comments: Expect just saturated worst case. (pads orbit) Exposure_Number: 460 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F439W, POLQ Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:2 Time_Per_Exposure: 3.0S Special_Requirements: Comments: Exposure_Number: 470 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F439W, POLQ Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:1 Time_Per_Exposure: 230.S Special_Requirements: Comments: Exposure_Number: 480 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F439W, POLQ Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:1 Time_Per_Exposure: 160.S Special_Requirements: Comments: Visit_Number: 05 Visit_Requirements: ORIENTation 50D TO 80D FROM 4 Exposure_Number: 510 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F439W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:2 Time_Per_Exposure: 1.0S Special_Requirements: Comments: Expect worst case pixel to contain 2800 DN Exposure_Number: 520 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F439W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:2 Time_Per_Exposure: 100.0S Special_Requirements: Comments: Exposure_Number: 530 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F953N Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:2 Time_Per_Exposure: 0.80S Special_Requirements: Comments: Exposure_Number: 540 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F953N Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:2 Time_Per_Exposure: 80.0S Special_Requirements: Comments: Exposure_Number: 550 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F555W Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:1 Time_Per_Exposure: 0.11S Special_Requirements: Comments: Expect just saturated worst case. (pads orbit) Exposure_Number: 560 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F439W, POLQ Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:2 Time_Per_Exposure: 3.0S Special_Requirements: Comments: Exposure_Number: 570 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F439W, POLQ Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:1 Time_Per_Exposure: 230.S Special_Requirements: Comments: Exposure_Number: 580 Target_Name: HD98800 Config: WFPC2 Opmode: IMAGE Aperture: PC1 Sp_Element: F439W, POLQ Wavelength: Optional_Parameters: CR-SPLIT=NO, ATD-GAIN=15 Number_of_iterations:1 Time_Per_Exposure: 160.S Special_Requirements: Comments: Data_Distribution Medium: 8MM Blocking_Factor: 10 Ship_To: STScI Ship_Via: Interoffice mail Recipient_Email: !soderblom@stsci.edu __Diagnostic-Sum-Section__ Software-Version (Controller= 1.0) Preprocessor (Errors= 1 Fatal-Errors= 0 ) Validation (Errors= 0 Fatal-Errors= 0 ) Transformation (Errors= 6 Fatal-Errors= 0 ) CASM (Errors= 1 Fatal-Errors= 0 ) __User-Comments__