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Downtime
STScI will be performing network upgrades on the following dates:
  • Sat 17 Apr 2021, 7:00 AM - 2:00 PM EDT (11:00 - 18:00 UTC)
  • Sat 24 Apr 2021, 7:00 AM - 4:00 PM EDT (11:00 - 20:00 UTC)
  • Sat 1 May 2021, 7:00 AM - 4:00 PM EDT (11:00 - 20:00 UTC)
  • Sun 2 May 2021, 7:00 AM - 4:00 PM EDT (11:00 - 20:00 UTC)
  • Sat 8 May 2021, TBD
  • Sun 9 May 2021, TBD
Services may be unavailable or interrupted during these times.

HST Documents

The HST Data Handbook
The comprehensive guide to calibrating, reducing, and analyzing HST data.

Archive Newsletters
The electronic newsletters provided information about the various MAST archives (including HST) from 1997 to 2013.

Old HST Archive Newsletters [incomplete]:

January 17, 1995
March 21, 1995
May 23, 1995
December 12, 1995