Astronomy and Astrophysics – Astronomy
Scientific paper
Aug 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004head....8.1639w&link_type=abstract
American Astronomical Society, HEAD meeting #8, #16.39; Bulletin of the American Astronomical Society, Vol. 36, p.935
Astronomy and Astrophysics
Astronomy
Scientific paper
We report here the results of an analysis of the first photons detected with the Chandra X-ray Observatory. The observation took place immediately following the opening of the last door protecting the X-ray telescope. We discuss the unusual operational conditions as the first extra-terrestrial X-ray photons reflected from the telescope onto the ACIS camera. One bright source was apparent to the team at the control center and the small collection of photons that appeared on the monitor were sufficient to indicate that the telescope had survived the launch and was approximately in focus, even prior to any checks and subsequent adjustments. We present an analysis of the sources in the field and an identification of the first Chandra source which had been named Leon X-1 to honor the momentous contributions of the Chandra Telescope Scientist, Leon Van Speybroeck.
Aldcroft Thomas
Cameron Robert A.
Elsner Ronald F.
Foellmi Cédric
Gandhi Poshak
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