UIT Catalog
The Ultraviolet Imaging Telescope (UIT) Near-UV Bright Objects
Catalog is a photometric catalog of 2244 objects detected by the UIT in the
near-ultraviolet (NUV; 1650A<lambda<2900A) during the Astro-1 Space Shuttle
mission. Sources in the catalog are as faint as near-UV magnitude m_nuv of
about 18.8, or near-UV flux f_nuv ~ 1.1x10^-16ergs/s/cm^2/A, but the
survey is not complete to this level. Optical catalogs were used to cross
identify sources and derive near-UV to Johnson V colors. A majority
of the objects (88%) do indeed have proposed optical identifications from
catalogs, and most are stars. The authors' purpose in creating the catalog
was to form a database useful for identifying very blue objects and for
performing Galactic UV stellar population studies.
UITMASTER Catalog
The Ultraviolet Imaging Telescope (UIT) was one of three ultraviolet
telescopes on the ASTRO-1 mission flown on the Space Shuttle Columbia during
the period of 2 - 10 December 1990. The same three instruments were later
flown on the Space Shuttle Endeavour during 3 - 17 March 1995, as part of the
ASTRO-2 mission. Exposures were obtained on 70-mm photographic film in the
1200-3300 Angstrom range using broadband filters and later digitized using a
Perkin-Elmer microdensitometer. The image resolution was 3 arcseconds over a
40 arcminute field of view and images of targets as faint as 21st
(ultraviolet) magnitude were recorded. Overall, the UIT-1 mission obtained
821 exposures of 66 targets (361 near-UV and 460 far-UV), and UIT-2 obtained
758 images of 193 targets (all far-UV), for a total of 1579 exposures.
This table contains only 1481 rows, 777 UIT-1 exposures (347 near-UV and 430
far-UV) and 704 UIT-2 exposures (all far-UV), implying that 98 exposures are
'missing' from this table.
