Horsehead Nebula
John E. Pool    Delta, Colorado USA


The Horsehead Nebula is a cold cloud composed mainly of dust, ice particles and hydrogen gas about 1500 LY away in the Orion Arm of the Milky Way galaxy.  Behind this cloud are numerous hot, young stars which emit intense ultraviolet radiation.  This radiation causes the hydrogen gas surrounding these stars to flouresce creating a silouette.  The direct light from some of these stars is absorbed by the cloud, hiding them from view.  Over the next billion years, more new stars will be born within the dark cloud altering its appearance.

Date & Timings
  10/14/99 commencing at 0309Z
  Single 60 min exposure

  Meade 12" LX200 @ f 6.3
  SBIG ST7 CCD camera w/ AO

  AO @ 330 ms sample rate
  Delta CO USA
  Lon 108W04   Lat 38N45

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