Statistics
Scientific paper
Aug 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996stis.rept...29d&link_type=abstract
Instrument Science Report STIS 96-029, 7 pages
Statistics
Hubble Space Telescope, Hst, Space Telescope Science Institute, Stis, Space Telescope Imaging Spectrograph
Scientific paper
The submitted STIS GTO Exposure Catalog has been used to estimate the type of science to be obtained with STIS, as well as the statistics of that usage. We find that most of the prime science will be long-exposure UV (MAMA) and optical (CCD) observations. There will be roughly 1340 MSM positions per year, with 1150 images and 3000 spectra of prime science. The raw prime science data rates are determined to be 158,000 Mbits/year (433 Mbits/day) for the MAMAs, and 38,280 Mbits/year (105 Mbits/day) for the CCD. Most targets will have three or fewer configurations, and most objects will be observed in four or fewer orbits. The bulk of the exposures are less than 2500s (roughly an orbit visibility period). About 40% of the program (by exposure) will be CCD or FUV-MAMA observations, with NUV-MAMA comprising the remaining 20%; 70% of the observations will be spectroscopic. Comparison with the initial estimates reveal good agreement, although the number of exposures is slightly smaller and the amount of MAMA data (after correction for the larger WAVECAL size) slightly larger than in the Design Reference Mission report.
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