ESO Sky Calendar Tool
for producing a nighttime calendar for a single site; listings include Sun
rise and set times, astronomical twilights in civil time and LST, Moon
rise and set times, Moon phases, and more.
designations for astronomical radiation sources outside the solar system.
IDL Astronomy User's
Library with descriptions and man pages of procedures; includes astro,
DAOPHOT, database, disk I/O, FITS astrometry and calibration,
STSDAS FITS maniupulation, FITS ASCII table I/O, FITS binary table
extensions, FITS I/O, image manipulation, math and statistics, plotting,
IDL structures, STSDAS binary table I/O, tape IO, TV display, and
miscellaneous non-astronomy procedures