Abell 21: The Medusa nebula

[elpajare]

This unusual planetary nebula is a very faint, rather large, irregular half-moon-shaped object, with apparent dimensions of 10.2 arc minutes. As it is so big, its surface brightness is very low, with magnitudes between +16 and +25 reported. Its NE end is brighter. Several stars are embedded in the nebula. The Medusa Nebula is estimated to be over 4 light-years across, and some 1,500 light-years away. 

TSoptics RC8+IRisingcam MX294 C uncooled

15x25" stack+Dark&flat sub.+ UVIR filter

 

 

 

 

Edited December 28, 2019 by elpajare

[RobertI]

Nice capture, tricky one that, viewed it myself sometime ago and recall it took longer than usual exposures. Nice colour. 

[elpajare]

This nebula had always resisted me, this time the good seeing has helped me. It has made me excited to share it here. Thanks for the comment Rob

[Mike JW]

Thanks for posting, always an encouragement to see what can be achieved.