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Contains:  Bubble nebula, M 52, NGC 7510, NGC 7538, NGC 7635, NGC 7654
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Sh2-157 Lobster Claw in HOO, 



    
        

            Douglas J Struble
Sh2-157 Lobster Claw in HOO
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Sh2-157 Lobster Claw in HOO

Technical card


Dates:Sept. 9, 2018Sept. 17, 2018

Frames:
Astrodon Ha 5nm: 398x120" (gain: 201.00) -18C bin 1x1
Astrodon OIII 3nm: 386x120" (gain: 201.00) -18C bin 1x1

Integration: 26.1 hours

Darks: ~50

Flats: ~50

Bias: ~250

Avg. Moon age: 18.56 days

Avg. Moon phase: 27.55%

Bortle Dark-Sky Scale: 6.50


Basic astrometry details

Astrometry.net job: 2261788

RA center: 23h 17' 12"

DEC center: +60° 43' 30"

Pixel scale: 2.311 arcsec/pixel

Orientation: 31.715 degrees

Field radius: 1.615 degrees


Resolution: 3929x3142

Locations: Backyard White Zone Observatory, Taylor, MI, Michigan, United States

Data source: Backyard

Description

This is a very busy region in Cassiopeia contains at least three different kinds of objects. The largest object in this image is Sh2-157, a bright emission nebula. Other emission nebulae in this image are NGC 7538, and the famous Bubble Nebula. The bright open cluster M52 is on the left, while the smaller but more interestingly-shaped open cluster NGC 7510 is at the right. Finally, in the bottom right corner is a bright patch of nebulosity called PK 110-0.1, which is a planetary nebula.

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Author

dugstruble
Douglas J Struble
License: None (All rights reserved)
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Sh2-157 Lobster Claw in HOO, 



    
        

            Douglas J Struble