Other Names: SH2 162, Caldwell 11
Optics: Meade 10" LX200 ACF at f/11.1
Mount: Paramount MX using
The SkyX ProCamera: QSI 683WS-8Filters: 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 3.8.0Location: 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#h29a2b670NGC 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