Page   1
    PROPOSAL FOR HUBBLE SPACE TELESCOPE OBSERVATIONS   ST ScI Use Only
                                                       ID 4904c
                                                       Report Date: 09-May-96:20:09
                                                       Version: **********
                                                       Check-in Date: **********

1.Proposal Title:
THE NUCLEI OF NEARBY S0 AND SPIRAL GALAXIES-III  A PC SNAPSHOT IMAGI- CYCLE 3, HIGH
------------------------------------------------------------------------------------
2. Scientific Category   3. Proposal For  4. Proposal Type        5. Continuation ID
GALAXIES & CLUSTERS         SNAP                                     <none>
Sub Category
NUCLEI/CORES
------------------------------------------------------------------------------------
6. Principal Investigator   Institution                    Country    Telephone
 Garth D Illingworth        LICK OBSERVATORY               USA

------------------------------------------------------------------------------------
7. Abstract
Striking results have been obtained from HST images of the cores of nearby galaxies,
such as NGC 1068, NGC 1275, NGC 7457, M32 and M87.  The diffraction- limited core of
the HST PSF is uniquely suited to identifying compact structures.  So far, the
majority of HST observations of nuclei have been on elliptical galaxies, and on the
very nearest early-type spiral galaxies.  The nuclei of spiral galaxies are likely
to prove as interesting as those of the elliptical sample.  An excellent example of
this is the PC image of M51 with its X-shaped subarcsecond dust lanes.  We propose a
SNAPSHOT PC imaging survey of a subset of a nearby redshift-limited sample of disk
galaxies (spiral plus S0) to characterize the nuclei of galaxies over a broad range
of Hubble types within a variety of environments, down to luminosities some 2
magnitudes fainter than L_star.  A sample of 200 galaxies will be provided, of which
we hope that at least 100 can be observed.  These data will provide invaluable
statistics on the presence of nuclear cusps, stellar condensations, inner stellar
disks and dust lanes in disk galaxies.  The properties derived for nearby "normal"
galactic nuclei will also provide a reference set for studies of rarer objects, such
as AGNs.  Furthermore, the archival database of such observations will be a resource
for more detailed study of galactic nuclei in later HST cycles, when the improved
PSF will allow more comprehensive spectroscopic and imaging studies to be carried
out.
------------------------------------------------------------------------------------
------------------------------------------------------------------------------------
9. Est obs time (hours) pri: 8.34     par: 0       10. Num targs pri: 200    par: 0
------------------------------------------------------------------------------------
11. Instruments requested:  WF/PC
------------------------------------------------------------------------------------
------------------------------------------------------------------------------------
                                                                  Page   2
I. GENERAL FORM    Proposal 4904c
PI:  Garth D Illingworth
Proposal Title:
THE NUCLEI OF NEARBY S0 AND SPIRAL GALAXIES-III  A PC SNAPSHOT IMAGI- CYCLE 3, HIGH
------------------------------------------------------------------------------------

1. Proposers:
Proposers                        Institution                       Country       ESA
------------------------------------------------------------------------------------
Pi Garth D Illingworth           LICK OBSERVATORY                  USA
 Marijn Franx                    CENTER FOR ASTROPHYSICS           USA
 Tod R Lauer                     KITT PEAK NATIONAL OBSERVATORY    USA
 John W Mackenty                 STSCI                             USA
------------------------------------------------------------------------------------
  3. Description of proposed observations.
  This project is a survey of the nuclei of nearby disk galaxies. Such nuclei have
 NOT been the subject of an extensive survey with HST, with a few exceptions
 amongst the nearest galaxies. The ability of HST to resolve structures FAR beyond
 what can be done from the  ground has been demonstrated during cycle 1 and makes
 this program uniquely suited to the current capabilities of HST. The short
 exposures will be used to establish the surface brightness  profile of the
 nucleus and to identify unusual nuclear condensations (e.g., star forming
 clumps), nuclear point sources, compact stellar or gaseous disks  and dust lanes
 on subarcsecond scales. Observations will be made in SNAPSHOT mode using PC6 with
 Coarse Track guiding of the nuclei of a sample of S0 and Spiral galaxies.   The
 observations are taken with the F555W filter Exposure times are typically 300s.
 The objects chosen for observation by the scheduling group can be selected at
 random from the list. The sample of ~200 galaxies is selected from the Revised
 Shapley Ames catalog, with input from the Third Reference Catalog, with the
 following constraints. (1) spiral or S0 galaxy, of RC2/RC3 type -3 to +7 (i.e.,
 early S0 to Sd); (2) brighter than ~L* - 2 mag; (3) velocity < 1000km/s. (4)
 distribution of the selected subset will be a uniform fraction of the  bivariate
 distribution over luminosity and Hubble type for S0, S and SB galaxies; (5) list
 complemented by a fractional selection in two higher density regions, namely in
 the Virgo and Fornax clusters, with such galaxies to be about 40% of the total;
                                                                  Page   3
------------------------------------------------------------------------------------
  4. Justification of need for HST observations.
  Several ground-based imaging programs have been carried out over the years on
 the nuclei of a small number of nearby galaxies.  The best efforts to date have
 come through the use of a high-resolution camera system (HRCAM) on the CFHT 3.6 m
 telescope.  Under good conditions this system can return images with FWHM of some
 0.3 arcsec (though more typical images for modern telescopes at the best sites
 are closer to 0.6-0.7 arcsec).   Adaptive optics systems on ground-based
 telescopes have great potential, but use of such systems for routinely  obtaining
 calibrated, well-characterized astronomical observations  lies in the future.  As
 we all know from detector technology developments, the future always looks
 promising, but it is invariably further away from routine astronomical use than
 we care to admit.   We can carry out a unique scientific program on galaxy nuclei
 now with HST,  and should do so. Since this is a survey it will potentially
 provide a sample of objects for which further more detailed study in future HST
 cycles (following the recovery mission) would be of great interest.    Burrows et
 al (1991) showed that the diffraction-limited core  of the HST image has a FWHM
 of 70 milliarcsecs in F555W (and recent results indicate that the FWHM may be
 smaller than the models suggest), with a Strehl ratio of ~10% ( a measure of the
 energy within the diffraction limited core).  Some 15% of the energy in the PSF
 lies within a radius of 0.1 arcsec. While slightly undersampled by the PC
 pixelation (43 mas pixels) this is hugely better than we can do from the ground.
 Ground-based images at 0.5 arcsec FWHM (a value never reached on most telescopes,
 and only rarely exceeded on some) with a comparable-sized telescope provide
 images with a Strehl ratio of ~1%, an order of magnitude worse than HST. As can
 be seen from Figure 1, and as other results have indicated, this difference in
 the PSF size is a huge one.  Very valuable scientific results have  been obtained
 in going from the typical 1-2 arcsec seeing to occasional 0.3-0.5 arcsec seeing
 at a few ground-based sites -- yet we have a gain in resolution from the best
 ground-based results to HST  that is proportionally larger.  As was clearly
 demonstrated for M32 by  Lauer et al. (1992), HST remains uniquely able to carry
 out such imaging programs.   We have selected PC6 and the F555W filter for this
 project as this combination is  one of those chosen for PSF monitoring and for
 which the CCD calibration data is likely to be amongst the most well-established.
 The nominal center of PC6 will also be used, as in the other programs on nearby
 galactic nuclei (primarily on ellipticals).   It is also consistent with other
 GTO and GO programs of imaging of nearby galactic nuclei. Thus our data can
 subsequently be combined with that in the archive  from those surveys to give a
 large consistent sample of high resolution images on the nuclei of nearby
 galaxies. Experience with these other surveys indicates  that integrations of
 ~300s will be a satisfactory compromise value between  good S/N and the risk of
 saturation in the nuclei.   Both NGC 7457 and M32 have unresolved, high surface
 brightness  stellar cusps at their center.  With a 300 s integration time,
 neither nucleus  would not have saturated. While a wide dispersion  in central
 surface brightnesses is likely,  those nuclei in our sample that saturate at this
 integration time (if any) will be amongst the highest surface brightness nuclei
 known and certainly worthy of observation in future HST cycles.
------------------------------------------------------------------------------------
  5. Description of special scheduling requirements.
  This is a SNAPSHOT program.  No special calibration of scheduling requests are
 needed.
                                                                  Page   4
------------------------------------------------------------------------------------
  7. Data reduction and analysis plans.
  The team members already have considerable experience with WF/PC data (MacKenty,
 Lauer), or soon will have (Franx, Illingworth).  In addition, all team members
 are deeply involved in HST projects that are using the PC to study the nature of
 galactic nuclei.  Thus, this survey is a very natural extension of their ongoing
 programs.  This experience means that by the time the snapshot data acquisition
 commences we will have in place the  procedures and software for handling PC
 images of nuclei.  While  the nuclei of the spirals will propably present us with
 unique problems, our experience base will ensure that we can move quickly to
 develop and utilize the necessary changes to our existing procedures and
 software.   We have experience with deconvolution techniques (primarily Lucy-
 Richardson) and can utilize that where necessary. The use of a  standard filter
 (F555W) and the nominal position in PC6 will ensure that we are can utilize the
 results of the ongoing PSF monitoring programs and also take advantage of
 improvements in the PSF model.  Model fitting procedures will also be used.   One
 such approach is to fit a surface brightness profile directly to the data, by an
 iterative procedure that convolves the profile with the PSF, determine the
 residuals from the fit, and then  adapt the surface brightness profile.
 Procedures which involve both deconvolution and model fitting have been shown to
 yield good results and will be used for these galaxies. Different approaches will
 be used to verify that reliable results  are being obtained from restored and/or
 fitted data.    This project is quite interesting for the involvement of a
 student because of the broad scientific issues that are dealt with in the
 analysis  and interpretation of the data. The large volume of data that can
 arise from this program also requires a substantial concentration of effort. The
 students can complement and support the team members in their areas of
 responsibility.   In certain aspects of the program, namely definition of the
 sample, interpretation of the results and writing the papers, all four team
 members will work closely.  However, to ensure timely publication of the results
 of the program, broad areas of responsibility have been defined and are
 summarised below.  Areas where students are expected to play a major role are
 also noted. preliminary definition of sample and derivation of positions -- Franx
 and Illingworth; responding to any scheduling issues and preliminary evaluation
 of the  data -- MacKenty; calibration and processing of the data -- MacKenty and
 Lauer (student); model fitting and deconvolutions -- Franx, Lauer and Illingworth
 (student); implications and interpretation -- Franx, Illingworth, Lauer and
 MacKenty; ground-based observations for any required  kinematical data -- Franx,
 Illingworth and Lauer. theoretical modelling -- Franx (student); paper(s) draft -
 - Illingworth; paper(s) final version -- Franx,Illingworth, Lauer and MacKenty.
------------------------------------------------------------------------------------
  8. Additional comments or special requests.
  Per request of STScI/SPD, this proposal (originally GO 4644) has been divided
 into four parts so that each part has about 50 targets. The titles have "-I,-II,-
 III,or -IV" appended to reflect this change. The cover page and all general form
 questions have been left the same on each proposal. Positions for the list of
 target galaxies will be derived initially  from the Third Reference Catalog.
 These then require accurate positions derived from the guide star catalog with
 GASP, as has been done for other samples of nearby galaxies.  Results to date
 (e.g., from program GO2600) suggest that positions accurate to approximately 2
 arcseconds can be  obtained.   This is quite adequate for the PC observations.
                                                                  Page   5
------------------------------------------------------------------------------------
  9. Description of previous HST work.
  The PI and Co-Is are involved in other HST projects. Many of these  have only
 begun to obtain data in the latter part of cycle 1, or are awaiting  data from
 cycle 2.   Lauer is a member of the WF/PC IDT and already has several
 publications resulting from IDT data obtained to date (primarily from 1105  and
 1118, but also from 1105-1138). Other proposals that the team members are
 involved in are 2227, 2600, 2684, 3551, 3698/4093 (same proposal -- two numbers
 for  logistical reasons) and 3538. Projects 1105, 1118, 2600, 3551, and 3698/4093
 are programs which  involve study of the nuclear regions of nearby galaxies
 (primarily ellipticals and AGNs).  3698/4093 is an AGN Snapshot survey.
 Comparison of the  results on AGNs with those for the nearby galaxies will be of
 particular interest. These programs  provide us with valuable experience for this
 project and will allow us to deal with the data in a timely fashion because of
 the large body of procedures and software that has been (or will already have
 been) developed by the time cycle 3 data becomes available.
------------------------------------------------------------------------------------
 10. Resources to be supplied by investigator's institution(s).
  The PI and Co-I's salary support is being largely covered by their respective
 institutions.  The extensive computational support needed for this project will
 be largely borne by systems acquired through the university and other grants.
 Only supplementary items of hardware are being requested.   Extensive use will be
 made of software developed and funded under other programs.
------------------------------------------------------------------------------------
11. Address Information
Name:  GARTH D ILLINGWORTH                                 Category: PI
Institution: Lick Observatory
Address:  UNIVERSITY OF CALIFORNIA
City: SANTA CRUZ                                State: CA
Zip Code: 95064                                 Country: USA
Telephone: 408 459 2843
Telex (or e-mail): NA
------------------------------------------------------------------------------------
TARGET LIST    a) Fixed Targets                                                                    ID = 4904c            [  6]
------------------------------------------------------------------------------------------------------------------------------------
 1 |     2      |           3           |              4             |  5     |   6    |  7  |              8
------------------------------------------------------------------------------------------------------------------------------------
Tar|   Target   |         Target        |            Target          |Coord   | Radial |Acqui|FLX|     Flux data
No |    Name    |       Description     |           Position         |Eqnx    |  Vel.  |Prblm|REF|
   |            |                       |                            |        |        |     |   |
------------------------------------------------------------------------------------------------------------------------------------
1   NGC1507      E,301                   RA=  4H  1M 55.8S +/- 1.0",  1950     V = +902       1   V = 12.70 +/- 0.2
                                         DEC=  -2D 19' 30.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
4   NGC1518      E,301                   RA=  4H  4M 37.8S +/- 1.0",  1950     V = +914       1   V = 12.30 +/- 0.2
                                         DEC= -21D 18' 42.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
5   NGC1527      E,301                   RA=  4H  6M 55.2S +/- 1.0",  1950     V = +902       1   V = 11.70 +/- 0.2
                                         DEC= -48D  1' 36.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
6   NGC1533      E,301                   RA=  4H  9M 52S +/- 1.0",    2000     V = +582       1   V = 11.71 +/- 0.2
                                         DEC= -56D 7'  6" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
7   IC2056       E,301                   RA=  4H 16M 24.70S +/- 1.0", 2000     V = +961       1   V = 12.19 +/- 0.2
                                         DEC= -60D 12'  23.90" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
8   NGC1574      E,301                   RA=  4H 20M 58.8S +/- 1.0",  1950     V = +736       1   V = 11.19 +/- 0.2
                                         DEC= -57D  5' 24.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
10  NGC1637      E,301                   RA=  4H 38M 58.2S +/- 1.0",  1950     V = +748       1   V = 11.52 +/- 0.2
                                         DEC=  -2D 57'  6.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
12  NGC1808      E,301                   RA=  5H  5M 58.8S +/- 1.0",  1950     V = +855       1   V = 10.70 +/- 0.2
                                         DEC= -37D 34' 42.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
15  208-G21      E,301                   RA=  7H 32M 37.2S +/- 1.0",  1950     V = +950       1   V = 12.20 +/- 0.2
                                         DEC= -50D 19' 54.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
17  NGC2500      E,301                   RA=  7H 58M  7.8S +/- 1.0",  1950     V = +760       1   V = 12.21 +/- 0.2
                                         DEC=  50D 52' 36.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
19  NGC2640      E,301                   RA=  8H 36M  4.8S +/- 1.0",  1950     V = +890       1   V = 12.40 +/- 0.2
                                         DEC= -54D 56' 54.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
25  NGC3056      E,301                   RA=  9H 52M 18.0S +/- 1.0",  1950     V = +961       1   V = 12.83 +/- 0.2
                                         DEC= -28D  3' 48.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
32  NGC3412      E,301                   RA= 10H 50M 53.30S +/- 1.0", 2000     V = +748       1   V = 11.47 +/- 0.2
                                         DEC=  13D 24' 43.2" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
33  NGC3423      E,301                   RA= 10H 51M 14.3S +/- 1.0",  2000     V = +985       1   V = 11.62 +/- 0.2
                                         DEC=   5D  50' 23.60" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
35  NGC3489      E,301                   RA= 10H 57M 40.8S +/- 1.0",  1950     V = +510       1   V = 11.13 +/- 0.2
                                         DEC=  14D 10' 12.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
37  NGC3507      E,301                   RA= 11H 3M 25.40S +/- 1.0",  2000     V = +985       1   V = 11.00 +/- 0.2
                                         DEC=  18D 8'  7.30" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
38  NGC3521      E,301                   RA= 11H  3M 15.0S +/- 1.0",  1950     V = +617       1   V =  9.64 +/- 0.2
                                         DEC=   0D 14' 12.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
TARGET LIST    a) Fixed Targets                                                                    ID = 4904c            [  7]
------------------------------------------------------------------------------------------------------------------------------------
 1 |     2      |           3           |              4             |  5     |   6    |  7  |              8
------------------------------------------------------------------------------------------------------------------------------------
Tar|   Target   |         Target        |            Target          |Coord   | Radial |Acqui|FLX|     Flux data
No |    Name    |       Description     |           Position         |Eqnx    |  Vel.  |Prblm|REF|
   |            |                       |                            |        |        |     |   |
------------------------------------------------------------------------------------------------------------------------------------
40  NGC3600      E,301                   RA= 11H 15M  52S +/- 1.0",   2000     V = +867       1   V = 12.30 +/- 0.2
                                         DEC=  41D 35'  29.2" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
41  NGC3607      E,301                   RA= 11H 16M 54.75S +/- 1.0", 2000     V = +819       1   V = 11.08 +/- 0.2
                                         DEC=  18D 3' 6.2" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
46  NGC3666      E,301                   RA= 11H 21M 49.8S +/- 1.0",  1950     V = +950       1   V = 12.36 +/- 0.2
                                         DEC=  11D 37'  6.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
48  NGC3705      E,301                   RA= 11H 30M 7.3S +/- 1.0",   2000     V = +819       1   V = 11.77 +/- 0.2
                                         DEC=   9D 16' 38.1" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
49  NGC3769      E,301                   RA= 11H 37M  44.2S +/- 1.0", 2000     V = +985       1   V = 12.52 +/- 0.2
                                         DEC=  47D 53' 33.40" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
50  NGC3782      E,301                   RA= 11H 39M 20.7S +/- 1.0",  2000     V = +961       1   V = 13.08 +/- 0.2
                                         DEC=  46D 30' 50.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
51  NGC3810      E,301                   RA= 11H 38M 24.0S +/- 1.0",  1950     V = +772       1   V = 11.36 +/- 0.2
                                         DEC=  11D 44' 54.0" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
52  IC750        E,301                   RA= 11H 58M 52.1S +/- 1.0",  2000     V = +855       1   V = 12.80 +/- 0.2
                                         DEC=  42D  43'  20.1" +/- 1"
------------------------------------------------------------------------------------------------------------------------------------
53  IC755        E,301                   RA= 11H 58M 36.0S +/- 1.0",  1950     V =            1   V = 13.61 +/- 0.2
                                         DEC=  14D 23'  0.0" +/- 1"            +1187
------------------------------------------------------------------------------------------------------------------------------------
EXPOSURE LOGSHEET                                                                                  ID = 4904c            [  8]
------------------------------------------------------------------------------------------------------------------------------------
 1      |   2   |      3    |  4   |   5   |   6   |    7   |   8   |       9       |10 |   11  |   12    |13 |14|        15
------------------------------------------------------------------------------------------------------------------------------------
  Line  |  Seq  |   Target  |Instr | Oper. | Aper  |Spectral|Central|   Optional    |Num|  Time |   S/N   |Flx|Pr|     Special
 Number | Name  |    Name   |Config| Mode  |or FOV |Element |Waveln.|  Parameters   |Exp|       |Rel. Time|Ref|  |   Requirements
------------------------------------------------------------------------------------------------------------------------------------
1                NGC1507     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO                                 CYCLE 3/1-53
------------------------------------------------------------------------------------------------------------------------------------
4                NGC1518     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
5                NGC1527     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
6                NGC1533     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
7                IC2056      PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
8                NGC1574     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
10               NGC1637     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
12               NGC1808     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
15               208-G21     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
17               NGC2500     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
19               NGC2640     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
25               NGC3056     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
32               NGC3412     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
33               NGC3423     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
35               NGC3489     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
37               NGC3507     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
38               NGC3521     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
EXPOSURE LOGSHEET                                                                                  ID = 4904c            [  9]
------------------------------------------------------------------------------------------------------------------------------------
 1      |   2   |      3    |  4   |   5   |   6   |    7   |   8   |       9       |10 |   11  |   12    |13 |14|        15
------------------------------------------------------------------------------------------------------------------------------------
  Line  |  Seq  |   Target  |Instr | Oper. | Aper  |Spectral|Central|   Optional    |Num|  Time |   S/N   |Flx|Pr|     Special
 Number | Name  |    Name   |Config| Mode  |or FOV |Element |Waveln.|  Parameters   |Exp|       |Rel. Time|Ref|  |   Requirements
------------------------------------------------------------------------------------------------------------------------------------
40               NGC3600     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
41               NGC3607     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
46               NGC3666     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
48               NGC3705     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
49               NGC3769     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
50               NGC3782     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
51               NGC3810     PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
52               IC750       PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
53               IC755       PC     IMAGE   PC6     F555W            CR-SPLIT=NO     1   300S    30        1   1  PCS MODE F
                                                                     PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
            Summary Form for Proposal 4904c                                                                              [ 10]

  Item                          Used in this proposal
------------------------------------------------------------------------------------------------------------------------------------
  Configurations                PC
------------------------------------------------------------------------------------------------------------------------------------
  Opmodes                       IMAGE
------------------------------------------------------------------------------------------------------------------------------------
  Optional Parameters           CR-SPLIT=NO PRE-FLASH=NO
------------------------------------------------------------------------------------------------------------------------------------
  Proposal for                  SNAP
------------------------------------------------------------------------------------------------------------------------------------
  S/C Hours                     8.34
------------------------------------------------------------------------------------------------------------------------------------
  Scientific Category           GALAXIES & CLUSTERS
------------------------------------------------------------------------------------------------------------------------------------
  Scientific Sub-category       NUCLEI/CORES
------------------------------------------------------------------------------------------------------------------------------------
  Special Requirements          PCS MODE F; CYCLE 3/1-53;
------------------------------------------------------------------------------------------------------------------------------------
  Spectral Elements             F555W
------------------------------------------------------------------------------------------------------------------------------------
  Target Names                  NGC1507 NGC1518 NGC1527 NGC1533 IC2056 NGC1574 NGC1637 NGC1808 208-G21 NGC2500 NGC2640 NGC3056
                                NGC3412 NGC3423 NGC3489 NGC3507 NGC3521 NGC3600 NGC3607 NGC3666 NGC3705 NGC3769 NGC3782 NGC3810
                                IC750 IC755
------------------------------------------------------------------------------------------------------------------------------------