Taken 10-Dec-14
Visitors 413

8 of 10 photos
Photo Info

Dimensions1478 x 1136
Original file size1.31 MB
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 683WS-8
Filters: Astrodon Ha 3nm, OIII 3nm, SII 3nm
Exposure: 880 Mins or 14 2/3 hours, [16 x 1800s Ha, 9 x 1200s OIII, 11 x 1200s SII 1200s]
Accessories: Auto guided with Starlight Xpress Adaptive Optics and Lodestar. FLI PDF focuser using FocusMax 3.8.0
Location: Calgary, AB
Date: Taken over several nights from July 27 to September 15th, 2014
Notes: Image acquisition with Maxim DL Pro using MaxPilote automation software.
Processing: Image calibration, align, and combine in Maxim DL Pro. Levels, curves, cosmetic adjustments and crop/resize in Photoshop.
Calibrated w/29 Darks, 100 Bias, 50 Flats of each filter using a flat pannel. CCD temperature was -25C. Image was taken from my backyard Observatory.

Ha image: http://astromarina.zenfolio.com/p264248004/h29a2b670#h29a2b670

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