NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a HII region emission nebula in the constellation Cassiopeia. It lies close to the direction of the open cluster Messier 52.
The bubble is created by the stellar wind from a massive hot star, SAO 20575, laying in a giant molecular cloud excited by the hot central star, causing it to glow.
In bottom left corner of the image there is Sh2-157 , also known as the Lobster Claw, which is part of the same hydrogen cloud. [Wiki]
RHa - G synt- B processing. |
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| Optic |
SW ED80 + 0,85 Reducer/Flattener |
| Camera |
Atik 383L+ |
| Filters |
Baader L, R, G, B, Ha 36mm |
| Mount |
NEQ6 with EQASCOM
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Guide
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SW 70/500 with AlCCD5
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Frame center
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RA 23:18:05 DEC 63:35:03
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Date
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10th September 2016
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Site
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Pian dell Armà, Italian Alps
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| Exposures
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Ha - 12x900s bin 1x1 @-10°C
R - 6x600s bin 2x2
B - 6x600s bin 2x2
Integration time - 5h
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