by Robert Vanderbei
The Trapezium in M42 18:53 EST Jan 26, 2016. Starlight Express Trius SX-694 on 10″ RCOS at f/9. Ha = 28 mins, OIII = 42 mins, (unguided 15-second subexposures). Richardson-Lucy deconv. Log stretch.
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Dept. of Astrophysical Sciences, Princeton University
Institute for Advanced Study
United Astronomy Clubs of NJ
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