The Northern Trifid in Pegasus

Posted by Steve Pastor
on Saturday, October 14, 2017

The Northern Trifid (aka NGC 1579) is found in the constellation Pegasus. Unlike its southern neighbor Messier 20 from which it got its name, the reddish hues are not a HII region but rather dust lighted by the reflection of a star with an unusual amount of H-alpha emission as well as interstellar extinction (S. J. O'Meara, The Secret Deep, 2011, pp 79-81). Our current understanding suggests the Northern Trifid is a vast dusty star-forming region. Image was taken with a SBIG 8300c CCD camera and a RCOS 12.5 inch f9 astrograph on a Paramount ME. Total combined exposure of 8 hr 20 min on the nights of 23 Nov, 30 Nov, 5 Dec 2016 in Mayhill, NM (25 x 1200 sec lights @-15 degrees C; 18 darks, 128 bias; 128 flats); Processed in PixInsight 1.8.5.1353 (64 bit).

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