The three UV telescopes that were flown on Astro-1 were
reassembled to form the Astro-2 Observatory. The Astro-2 Spacelab
mission launched on the space shuttle
2 March 1995, for a 16-1/2 day mission that was nearly twice
as long as Astro-1. Increased observation time,
coupled with technical improvements to HUT and the Instrument
Pointing System, enabled HUT scientists to gather 5
times more data than they did during Astro-1.
In all, HUT was used to make 385 science pointings at 260 unique
astronomical targets during Astro-2.
HUT's science program
for Astro-2 was a combination of expanding on
results from Astro-1
and breaking new ground. Seldom in astronomy
do observations of one or two objects provide a truly general
understanding of a whole class. By observing more active galaxies,
elliptical galaxies, cataclysmic variables and nebulae, Astro-2 HUT
observations provided a much broader understanding of the
phenomena involved in these objects. Also, HUT's improved
sensitivity for Astro-2 made it possible to observe objects
that were too faint previously, permitting whole new science
programs to be pursued.
A description of some preliminary
from Astro-2 is available.
The Astro-2 flight crew
piloted the shuttle and operated the telescopes in orbit. Click for more
information about the crew.