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Sharpless 2-106

Posted: December 17th, 2011, 10:05 pm
by Christopher K.
The HST in February imaged a spectacular nebula which lies 2000 light-years away in Cygnus. Its dimensions are about 2x0.5 light-years. A massive central star, Infrared Radio Source 4, could be upwards of fifteen solar masses.

The nebula itself is beautiful. A ring of dust around IRS 4 blocks the expanding gas and causes it to form lobes on either side of the star.

More information: ... angel.html

Compare it with ground-based images taken in February 2010:

Re: Sharpless 2-106

Posted: February 2nd, 2014, 6:12 pm
by Christopher K.
The Hubble Heritage image hyperlinked in the previous post is the December selection for Astronomy Magazine's 2014 Deep Space Mysteries calendar.

The star-forming region lies 2˚30' north-northwest of magnitude 4.6, K-class 47 Cygni.

Re: Sharpless 2-106

Posted: April 11th, 2020, 8:11 pm
by Christopher K.
We have yet another differently-processed image of the nebula housing Infrared Source 4 (a new massive star). Some celestial objects are unaided-eye, some provide more detailed views with binoculars or telescopes, and some require cameras and processing. Sharpless 2-106 is one of the latter.

The image: