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Session 54 - Ground and Instrumentation Techniques and Catalogs.
Display session, Wednesday, June 12
Tripp Commons,
Wide field direct CCD images in UBVR, H\alpha, and in selected cases H\beta, [OIII], and/or Stromgren u, were obtained at Kitt Peak, Cerro Tololo and Mount Laguna Observatories to support and to complement the Astro-1 ultraviolet imaging data. The Ultraviolet Imaging Telescope (UIT), flown aboard Astro-1 during its 10 day Space Shuttle mission in December 1990, is a 38-cm f/9 Ritchey-Chretien telescope which uses photographic film behind high quantum efficiency, solar-blind image tubes. This system provides fields 40 arcminutes in diameter at 2.5 arcseconds FWHM. The UIT observed 66 astronomical targets including 4 solar system objects, 29 galactic fields, 8 local group galaxy fields, 16 other nearby galaxies, and 9 cluster of galaxies and quasars. These UIT images are the first set of large format, high resolution vacuum UV images for such a variety of astronomical objects. Our matching ground-based optical images have been used for optical identifications of UV sources discovered by UIT. This data set also provides the long baseline in wavelength necessary to analyze the UV vs. optical color profiles of extended objects such as globular clusters and galaxies. We have put our ground-based CCD images on three CD-ROM disks, which will be distributed during the AAS meeting. They also can be obtained from the National Space Science Data Center (NSSDC) via FTP.
