Hemisphere:  Northern  ·  Contains:  4 Cas  ·  Bubble nebula  ·  M 52  ·  M52  ·  NGC 7538  ·  NGC 7635  ·  NGC 7654  ·  NGC7538  ·  NGC7635  ·  PK112-00.1  ·  Sh2-158  ·  Sh2-159  ·  Sh2-161  ·  Sh2-162  ·  The star 4Cas
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Bubble nebula (C11/NGC7635/Sh2-162) and its surroundings, 


            Ram Samudrala
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Bubble nebula (C11/NGC7635/Sh2-162) and its surroundings

Imaging telescopes or lenses: Takahashi FC-100DF

Imaging cameras: QHY163M

Mounts: Software Bisque Paramount MyT

Focal reducers: Takahashi Reducer FC-35

Software: Adobe Photoshop CC  ·  SharpCap Pro  ·  PixInsight  ·  Software Bisque TheSkyX Professional Suite

Filters: Astrodon Ha 1.25 5nm  ·  Astrodon OIII 1.25 3nm  ·  Astrodon SII 31mm 3nm

Dates:May 25, 2018May 26, 2018May 29, 2018June 3, 2018June 7, 2018June 9, 2018

Astrodon Ha 1.25 5nm: 60x300" (gain: 200.00) -15C bin 1x1
Astrodon OIII 1.25 3nm: 84x300" (gain: 200.00) -15C bin 1x1
Astrodon SII 31mm 3nm: 72x300" (gain: 200.00) -15C bin 1x1

Integration: 18.0 hours

Darks: ~20

Avg. Moon age: 17.35 days

Avg. Moon phase: 69.86%

Bortle Dark-Sky Scale: 3.00

Mean FWHM: 4.00

Temperature: 20.00

Astrometry.net job: 2152816

RA center: 23h 19' 27"

DEC center: +61° 32' 27"

Pixel scale: 1.677 arcsec/pixel

Orientation: 1.707 degrees

Field radius: 1.309 degrees

Resolution: 4586x3402

Data source: Backyard


Bubble nebula (C11/NGC7635/Sh2-162) and its surroundings including the Brain Nebula NGC7538/Sh2-158) and the Salt and Pepper Cluster (M52/NGC7654/Cr455/Mel423) (c-sho-hubble):
I really wanted to do a widefield image that grouped a bunch of my favourite objects, the beautiful Bubble, the open cluster M52, and the underappreciated nebula NGC7538. Each of these would've been better done in one of my bigger scopes, but I decided to get them all in with my 4" Takahashi in order to better capture the surrounding nebulosity. There's actually even more nebulosity in the bottom---enough to make for a second panel---which someday I hope to get to).



Ram Samudrala
License: Attribution Creative Commons

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Bubble nebula (C11/NGC7635/Sh2-162) and its surroundings, 


            Ram Samudrala