Space Telescope Science Institute 3700 San Martin Drive Baltimore, MD 21218 (301) 338-4700 Telex 6849101 Fax: (301) 338-4767 Operated by the Association of Universities for Research in Astronomy, Inc., for the National Aeronautics and Space Administration Chris Blades: Telescope & Instruments Branch Chief (301) 338 4805 Span: Blades::Scivax Bitnet: Blades@stsci.bitnet 21 September 1990 Dear Colleague, Please find enclosed a magnetic tape containing some of the first results obtained with the Hubble Space Telescope cameras. These data were obtained by the Investigation Definition Teams during August 1990 as part of the Science Assessment and Early Release observations. Further details of these programs can be found in the August issue of the STScI Newsletter. We are releasing these data now to facilitate your own reassessment of your HST observing program. Accordingly, this data tape is being distributed to all general observers and guaranteed time observers who have HST time in forthcoming observing cycles. A second data tape containing spectrograph observations will be compiled and distributed once these data are in hand (probably by early November). We are also compiling a collection of OTA point spread function images for our own analysis of the spherical aberration and plan to have these data generally available in the months ahead. You should bear in mind when inspecting these images that they are early data, and not all the software bugs have been fixed nor all the calibration wrinkles ironed out. In particular, many of the Files used to calibrate the data are derived from ground observations which are now inappropriate. In other words: treat the data with care. Scientific investigations utilizing these data are already underway by the Investigation Definition Teams. The IDTs are going to submit the scientific results for rapid publication. Specific contacts for these data are given on the next page. Please talk with the PIs or the contact scientists if you have questions about the data. Target Team IDT lead STScI contact NGC1850 WF/PC Baum Gilliland (x4454) NGC925 WF/PC Light Griffiths (x4824) NGC188 WF/PC Westphal Mackenty (x4559) NGC7457 WF/PC Lauer Oergerle (x4744) M15 WF/PC Faber Gilliland (x4454) Saturn WF/PC Westphal Weaver (x4765) R Aquarii FOC Paresce (x4823) Nota (x4520) R136A FOC Weigelt (x5004) Greenfield (x4783) SN1987A FOC Jakobsen (x5004) Panagia (x4916), Kirshner ( CfA) Note: The WF/PC IOT are located at Bowie state College and can be contacted by telephone (301 464-9624) and FAX (301 805-9205). The FOC IDT are at STScI. Two observations of SN1987A were taken. The one included on this tape is from a GO program with Bob Kirshner (CfA, Harvard) as PI. There are 18 WF/PC Files on the tape in the following order. Target Filename Cam Filter Exp Time Comments NGC1850 w0bs0102t WF F555W 1100s LMC Cluster NGC925 w0bu0l01t WF F555W 950s Spiral Arm NGC925 w0bu0102t WF F555W 9505 CR SPlIT NGC188 w0bv0l02t WF F555W 12s PSF obs NGC7457 w0bw0l03t PC F555W 400s SO Galaxy M15 w0cg0108t PC F336W 100s poor tracking Saturn w0ck0101t WF F439W 0.4s coarse track Flat Field #1 a3u15306w WF F336W ... for F336W Flat Field #2 f439w WF F439W ... for F439W Flat Field #3 f555wa WF F555W ... for F555W Flat Field #4 f547m WF F547M ... for F547M The 20 FOC Files conclude the data set. Target Filename Cam Filter Exp Time Comments R Aquarii x0c90101t f/96 F501N 597s Stellar jet SN1987A x0c80106t f/96 F501N 822s LMC supernova PSF #1 x0cj010bt f/96 F501N 721s for above images R136A x0bq0102t f/96 F346M/F8ND 259s LMC cluster PSF #2 x0cj010ct f/96 F346M/F4ND 723s for above image Both uncalibrated and calibrated images are provided on the tape. The .d0h is the uncalibrated image and the .c0h and .c1h