6497( 8) - 06/19/97 17:32 - [ 1]
PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS ST ScI Use Only
ID: 6497
Version: 8
Check-in Date: 19-Jun-1997
16:11:37
1.Proposal Title:
An Ultra-Deep Study of Comets in the Kuiper Belt
------------------------------------------------------------------------------------
2. Scientific Category 3. Proposal For 4. Cycle
SOLAR SYSTEM GO 6
------------------------------------------------------------------------------------
5. Investigators
Contact?
PI: HAROLD LEVISON SOUTHWEST RESEARCH INST.
CoI: Anita Cochran University of Texas N
CoI: Alan Stern Southwest Research Institute N
CoI: Martin Duncan Queen's University N
CoI: Arthur Whipple University of Texas N
------------------------------------------------------------------------------------
6. Abstract
Recently, our team has reported the detection of ~ 30 Halley- sized objects in the
Kuiper belt using HST/WFPC2 observations taken during Cycle 4. Our results represent
the first reported detections of objects the size of typical short- period comets in
their native reservoir. In addition to demonstrating that such objects are indeed
present in the Kuiper belt, we have proved that the HST/WFPC2 can be used to study
these objects. Here we are proposing to push the observations to heretofore
unprecedented levels by observing an ecliptic WPFC2 field, for a total integration
time of 35 orbits, in order to advance both studies of the population size
distribution, and the physical properties of cometary nuclei in the Kuiper belt.
These observations will allow us to study, for the first time, the physical
properties of objects with radii between ~ 2.5 and ~ 10 km in their native
environment. With a single deep WFPC2 data set, we will be able to determine the
size distribution and colors of these objects. We may even be able to determine the
lightcurves for some of our brightest objects. In all, we estimate that we should
detect and study ~ 200 new Kuiper belt objects.
------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 2]
Observations Description
------------------------
Our Cycle 4 observations have shown that Halley-sized objects do indeed
populate the Kuiper belt, and that WFPC2/HST is capable of observing them. We
are proposing to perform an ambitious set of WFPC2 observations in order to
study the physical characteristics of these bodies. We propose a single set of
WFPC2 observations that will collect a total of 35 orbits of integration time
on one field in the Kuiper belt. Our objectives are to measure the size
distribution and perhaps lightcurves of Kuiper belt objects with radii smaller
than ~ 10, km. A 2.5 km Kuiper belt object at 30 au from the Sun, with an
albedo of 0.04, will have a magnitude of V=30.0 when observed at quadrature.
This object observed with a single 25hr exposure will have a signal-to-noise
ratio (S/N) of 3.6 in the ``Wide V'' filter (F606W). Individual 20, min
integrations (discussed below) summed to the 25 hr total will result in a
slightly lower S/N of 2.7 due to increased readnoise. Although S/N=2 objects
are not detectable as individuals, they are detectable as a group by using the
statistical methods developed for our Cycle 4 observations (cf. Cochran et al.
1995). Thus, we chose a total integration time of 25 hours in order to provide
us with a reasonable sampling of objects of this size. As discussed in the
previous section, the known Kuiper belt objects tend to be red in color,
similar to a K star. Because of this red color, the same 2.5 km object with a
heliocentric distance of 30 au will have a S/N=3.7 in a single 25 hr
integration through the ``Wide R'' filter (F702W). Thus, we could use either
the F606W or the F702W filter without much difference in overall sensitivity.
We choose to use both the F606W filter and F702W filters on alternate orbits
since the signal/noise will be approximate the same in each and the use of both
may yield important color information about these objects. Recall that in the
first paper analyzing our Cycle 4 data, we found approximately 30 objects with
drift rates in the range 0.73 to 1.16 arcsec/hr. (Such drift rates are
consistent with, but not restricted to, the motion of objects near perihelion
in 2:3 Neptune mean motion resonances with eccentricities from 0.1 to 0.3). By
restricting our proposed ultra-deep survey to roughly the same range of drift
rates, we anticipate discovering roughly 200 objects in the same relatively
small range of distances. However, there is one major modification that is
needed to accommodate the 25 hr integration time. In order to ensure that we
can recover objects from exposure to exposure, all of the frames must be taken
within a 3-5 day period. In this length of time, most of the objects will move
an angular distance which is larger than the field of view. However, if we
track the telescope so that the center of the field follows a hypothetical
comet moving with a drift rate of 0.95 arcsec/hr, then the largest differential
drift rate for our sample will be 0.22 arcsec/hr. This procedure has two
important features: 1) the individual exposure time can be increased from 10
minutes to 20 minutes, since the light from the images in the proposed range of
drift rates will remain on one pixel during each exposure and 2) over a one-
week period a differential drift of 0.22 arcsec/hr with respect to the guiding
center will produce a total differential motion of 37 arcsec, comfortably less
than the 70 arcsec field of view. There should be no spacecraft roll between
individual frames. We compute that 25 hours of total integration requires 35
orbits of the spacecraft. This number was arrived at by packing two exposures
of either 20 or 21 minutes (first or subsequent orbit of the available 8 orbits
outside the SAA avoidance) per orbit with 5 minutes of overhead for the two
exposures. In addition, there is either 8 or 6 minutes for guide star
acquisition or reacquisition each orbit. This completely fills the 53 minute
visibility window for a planetary object of our chosen declination. In summary,
we are proposing to observe a single ecliptic WPFC2 field for a total
integration time of 25 hours in order to study cometary nuclei in the Kuiper
belt. These observations will allow us to study, for the first time, the
physical properties of objects with radii between ~2.5 and ~10, km in their
native environment. With a single deep WFPC2 data set we will be able to
determine the size distribution and colors of these objects. In addition, we
hope to be able to determine the lightcurves for some of our brightest objects.
In all, we estimate that we should detect and study ~200 new Kuiper belt
objects.
Real Time Justification
-----------------------
None. None.
Calibration Justification
-------------------------
Additional Comments
-------------------
------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 3]
Data Distribution
Media: 8MM
Blocking Factor: 10
Ship To: Anita Cochran, Astronomy Dept,
University of Texas, Austin, TX 78712
Ship Via:
Email: anita@zinfandel.as.utexas.edu
------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 4]
TARGET LIST b)Solar System Targets
------------------------------------------------------------------------------------------------------------------------------------
TARGET NUMBER: 1 | TARGET NAME: KB1
------------------------------------------------------------------------------------------------------------------------------------
TARGET DESCRIPTION: COMET Kuiper belt field 1
------------------------------------------------------------------------------------------------------------------------------------
TARGET POSITION LEVEL 1 | TARGET POSITION LEVEL 2
|
TYPE=ASTEROID,A=39.447,E=0.2,I=0.3036,O= |
64.555,W=351.156,M=359.999,EPOCH=18-Aug- |
1997,EQUINOX=J2000 |
|
------------------------------------------------------------------------------------------------------------------------------------
TARGET POSITION LEVEL 3 | WINDOWS
|
| PHASE OF EARTH FROM KB1 BETWEEN 88 92,
| PHASE OF EARTH FROM KB1 BETWEEN 268 272
|
------------------------------------------------------------------------------------------------------------------------------------
DATA | COMMENTS
|
V = 28.5+/-1.0 | Orbital elements must be updated for
| exact observation time. At time of
| first exposure the position of
| telescope should R.A.= 3 41 20, Dec
| = +19 34.7 (equinox 2000.0). The 2
| phase windows whould be 'OR'ed
| rather then 'AND'ed.
|
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 5]
Visit: 01
Visit Requirements: sched 50% BETWEEN 18-Aug-1997 AND 25-Aug-1997
On Hold Comments: <none>
Additional Comments: <none>
Exposures
------------------------------------------------------------------------------------------------------------------------------------
Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special
Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements
------------------------------------------------------------------------------------------------------------------------------------
100 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 101 WITH 100
IX
------------------------------------------------------------------------------------------------------------------------------------
101 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 540 S
CD
------------------------------------------------------------------------------------------------------------------------------------
110 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 111 WITH 110 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
111 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
200 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 201 WITH 200
IX
------------------------------------------------------------------------------------------------------------------------------------
201 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
210 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 211 WITH 210 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
211 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
300 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 301 WITH 300
IX
------------------------------------------------------------------------------------------------------------------------------------
301 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
310 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 311 WITH 310 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
311 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
400 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 401 WITH 400
IX
------------------------------------------------------------------------------------------------------------------------------------
401 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
410 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 411 WITH 410 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 6]
Exposures
------------------------------------------------------------------------------------------------------------------------------------
Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special
Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements
------------------------------------------------------------------------------------------------------------------------------------
411 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
500 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 501 WITH 500
IX
------------------------------------------------------------------------------------------------------------------------------------
501 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
510 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 511 WITH 510 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
511 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
600 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 601 WITH 600
IX
------------------------------------------------------------------------------------------------------------------------------------
601 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
610 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 611 WITH 610 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
611 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
700 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 701 WITH 700
IX
------------------------------------------------------------------------------------------------------------------------------------
701 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
710 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 711 WITH 710 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
711 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 7]
Visit: 02
Visit Requirements: sched 50% BETWEEN 18-Aug-1997 AND 25-Aug-1997
On Hold Comments: <none>
Additional Comments: <none>
Exposures
------------------------------------------------------------------------------------------------------------------------------------
Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special
Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements
------------------------------------------------------------------------------------------------------------------------------------
100 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 101 WITH 100
IX
------------------------------------------------------------------------------------------------------------------------------------
101 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 540 S
CD
------------------------------------------------------------------------------------------------------------------------------------
110 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 111 WITH 110 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
111 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
200 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 201 WITH 200
IX
------------------------------------------------------------------------------------------------------------------------------------
201 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
210 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 211 WITH 210 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
211 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
300 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 301 WITH 300
IX
------------------------------------------------------------------------------------------------------------------------------------
301 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
310 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 311 WITH 310 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
311 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
400 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 401 WITH 400
IX
------------------------------------------------------------------------------------------------------------------------------------
401 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
410 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 411 WITH 410 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 8]
Exposures
------------------------------------------------------------------------------------------------------------------------------------
Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special
Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements
------------------------------------------------------------------------------------------------------------------------------------
411 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
500 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 501 WITH 500
IX
------------------------------------------------------------------------------------------------------------------------------------
501 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
510 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 511 WITH 510 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
511 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
600 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 601 WITH 600
IX
------------------------------------------------------------------------------------------------------------------------------------
601 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
610 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 611 WITH 610 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
611 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
700 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 701 WITH 700
IX
------------------------------------------------------------------------------------------------------------------------------------
701 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
710 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 711 WITH 710 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
711 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 9]
Visit: 03
Visit Requirements: sched 50% BETWEEN 18-Aug-1997 AND 25-Aug-1997
On Hold Comments: <none>
Additional Comments: <none>
Exposures
------------------------------------------------------------------------------------------------------------------------------------
Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special
Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements
------------------------------------------------------------------------------------------------------------------------------------
100 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 101 WITH 100
IX
------------------------------------------------------------------------------------------------------------------------------------
101 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 540 S
CD
------------------------------------------------------------------------------------------------------------------------------------
110 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 111 WITH 110 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
111 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
200 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 201 WITH 200
IX
------------------------------------------------------------------------------------------------------------------------------------
201 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
210 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 211 WITH 210 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
211 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
300 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 301 WITH 300
IX
------------------------------------------------------------------------------------------------------------------------------------
301 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
310 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 311 WITH 310 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
311 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
400 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 401 WITH 400
IX
------------------------------------------------------------------------------------------------------------------------------------
401 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
410 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 411 WITH 410 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 10]
Exposures
------------------------------------------------------------------------------------------------------------------------------------
Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special
Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements
------------------------------------------------------------------------------------------------------------------------------------
411 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
500 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 501 WITH 500
IX
------------------------------------------------------------------------------------------------------------------------------------
501 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
510 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 511 WITH 510 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
511 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
600 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 601 WITH 600
IX
------------------------------------------------------------------------------------------------------------------------------------
601 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
610 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 611 WITH 610 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
611 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
700 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 701 WITH 700
IX
------------------------------------------------------------------------------------------------------------------------------------
701 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
710 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 711 WITH 710 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
711 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 11]
Visit: 04
Visit Requirements: sched 50% BETWEEN 18-Aug-1997 AND 25-Aug-1997
On Hold Comments: <none>
Additional Comments: <none>
Exposures
------------------------------------------------------------------------------------------------------------------------------------
Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special
Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements
------------------------------------------------------------------------------------------------------------------------------------
100 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 101 WITH 100
IX
------------------------------------------------------------------------------------------------------------------------------------
101 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 540 S
CD
------------------------------------------------------------------------------------------------------------------------------------
110 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 111 WITH 110 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
111 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
200 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 201 WITH 200
IX
------------------------------------------------------------------------------------------------------------------------------------
201 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
210 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 211 WITH 210 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
211 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
300 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 301 WITH 300
IX
------------------------------------------------------------------------------------------------------------------------------------
301 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
310 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 311 WITH 310 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
311 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
400 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 401 WITH 400
IX
------------------------------------------------------------------------------------------------------------------------------------
401 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
410 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 411 WITH 410 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 12]
Exposures
------------------------------------------------------------------------------------------------------------------------------------
Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special
Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements
------------------------------------------------------------------------------------------------------------------------------------
411 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
500 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 501 WITH 500
IX
------------------------------------------------------------------------------------------------------------------------------------
501 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
510 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 511 WITH 510 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
511 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
600 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 601 WITH 600
IX
------------------------------------------------------------------------------------------------------------------------------------
601 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
610 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 611 WITH 610 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
611 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
700 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 701 WITH 700
IX
------------------------------------------------------------------------------------------------------------------------------------
701 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
710 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 711 WITH 710 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
711 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 13]
Visit: 05
Visit Requirements: sched 50% BETWEEN 18-Aug-1997 AND 25-Aug-1997
On Hold Comments: <none>
Additional Comments: <none>
Exposures
------------------------------------------------------------------------------------------------------------------------------------
Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special
Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements
------------------------------------------------------------------------------------------------------------------------------------
100 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 101 WITH 100
IX
------------------------------------------------------------------------------------------------------------------------------------
101 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 540 S
CD
------------------------------------------------------------------------------------------------------------------------------------
110 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 111 WITH 110 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
111 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
200 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 201 WITH 200
IX
------------------------------------------------------------------------------------------------------------------------------------
201 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
210 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 211 WITH 210 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
211 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
300 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 301 WITH 300
IX
------------------------------------------------------------------------------------------------------------------------------------
301 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
310 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 311 WITH 310 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
311 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
400 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 401 WITH 400
IX
------------------------------------------------------------------------------------------------------------------------------------
401 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
410 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 411 WITH 410 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 14]
Exposures
------------------------------------------------------------------------------------------------------------------------------------
Exposure| Target |Instr | Oper. | Aper |Spectral|Central| Optional |Num| Time | Special
Number | Name |Config| Mode |or FOV |Element |Waveln.| Parameters |Exp| | Requirements
------------------------------------------------------------------------------------------------------------------------------------
411 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
500 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 501 WITH 500
IX
------------------------------------------------------------------------------------------------------------------------------------
501 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
510 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 511 WITH 510 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
511 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
600 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 601 WITH 600
IX
------------------------------------------------------------------------------------------------------------------------------------
601 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
610 KB1 WFPC2 IMAGE WFALL-F F702W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 611 WITH 610 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
611 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
700 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1100 S PAR 701 WITH 700
IX
------------------------------------------------------------------------------------------------------------------------------------
701 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
710 KB1 WFPC2 IMAGE WFALL-F F606W CR-SPLIT=NO,CLOCKS=NO 1 1000 S PAR 711 WITH 710 END
IX ORBIT
------------------------------------------------------------------------------------------------------------------------------------
711 KB1 STIS/C ACCUM 50CCD MIRROR CR-SPLIT=NO 2 600 S
CD
------------------------------------------------------------------------------------------------------------------------------------
6497( 8) - 06/19/97 17:32 - [ 15]
Summary Form for Proposal 6497
Item Used in this proposal
------------------------------------------------------------------------------------------------------------------------------------
Configurations WFPC2 STIS/CCD
------------------------------------------------------------------------------------------------------------------------------------
Opmodes IMAGE ACCUM
------------------------------------------------------------------------------------------------------------------------------------
Optional Parameters CR-SPLIT=NO CLOCKS=NO
------------------------------------------------------------------------------------------------------------------------------------
Proposal Category GO
------------------------------------------------------------------------------------------------------------------------------------
Scientific Category SOLAR SYSTEM
------------------------------------------------------------------------------------------------------------------------------------
Special Requirements sched 50% BETWEEN 18-Aug-1997 AND 25-Aug-1997 PAR 101 WITH 100 PAR 111 WITH 110 END ORBIT PAR 201
WITH 200 PAR 211 WITH 210 END ORBIT PAR 301 WITH 300 PAR 311 WITH 310 END ORBIT PAR 401 WITH 400
PAR 411 WITH 410 END ORBIT PAR 501 WITH 500 PAR 511 WITH 510 END ORBIT PAR 601 WITH 600 PAR 611
WITH 610 END ORBIT PAR 701 WITH 700 PAR 711 WITH 710 END ORBIT
------------------------------------------------------------------------------------------------------------------------------------
Spectral Elements F606W MIRROR F702W
------------------------------------------------------------------------------------------------------------------------------------
Target Names KB1
------------------------------------------------------------------------------------------------------------------------------------