Derby and District Astronomical Society



Sharpless 2-157
The Lobster Claw Nebula

Emission Nebula in Cassiopeia
RA 23h 16m 05s  Dec +60° 02' 25"

[Sharpless Index]



This 2 panel mosaic of the area encompassing open cluster M52 (at upper right), the Bubble Nebula (NGC 7635) and the Lobster Claw Nebula (Sh 2-157) was created by Chris Callaway using a total of 9.2 hours of data (184 x 3 minutes of narrow band data), captured in November 2025. The telescope was a Takahashi 106, the mount a Paramount MYT, the camera an Atik 16200, and chroma narrow band filters were used. The image was processed using Astro Pixel Processor, PixInsight and Photoshop.  Image Credit: Chris Callaway.


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