Taken 15-Aug-14
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Dimensions1395 x 1055
Original file size707 KB
Image typeJPEG
Color spaceUncalibrated
NGC 7635 - The Bubble Nebula

NGC 7635 - The Bubble Nebula

Other Names: SH2 162, Caldwell 11
Optics: Meade 10" LX200 ACF at f/11.1
Mount: Paramount MX using The SkyX Pro
Camera: QSI 683WSG
Filters: Astrodon Ha 3nm
Exposure: 440 Mins or 7 1/3 hours, [4 x 1800s, 15 x 1200s, 2 x 600s]
Accessories: Auto guided with Starlight Xpress Adaptive Optics and Lodestar. FLI PDF focuser using FocusMax
Location: Calgary, AB
Date: Taken over 5 nights from July 27 to August 12th, 2014
Notes: Image acquisition with Maxim DL Pro. Processing: Image calibration, align, and combine in Maxim DL Pro. Levels, curves, cosmetic adjustments and crop/resize in Photoshop.
Calibrated w/24 Darks, 100 Bias, 50 Flats using a flat pannel. CCD temperature was -25C. Image was taken from my backyard Observatory.

NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region[1] 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, 8.7[1] magnitude young central star, the 15 ± 5 M☉[4] SAO 20575 (BD+60 2522).[7] The nebula is near a giant molecular cloud which contains the expansion of the bubble nebula while itself being excited by the hot central star, causing it to glow.[7] It was discovered in 1787 by William Herschel.[5] The star SAO 20575 or BD+602522 is thought to have a mass of 10-40 Solar masses