Imaging telescopes or lenses: TS-Optics RC 10" Truss
Imaging cameras: QHYCCD QHY 22
Mounts: iOptron CEM60
Guiding cameras: QHY5L-II Mono
Focal reducers: TS-Optics CCD47-S x0.67
Software: PixInsight PixInsinght 1.8 RC7 · PHD guiding · APT - Astro Photography Tool
Filters: Astrodon S-II 3nm · Astrodon O-III 3nm · Astrodon HII-3nm
Frames: 152x900"
Integration: 38.0 hours
Astrometry.net job: 4152898
RA center: 23h 20' 36"
DEC center: +61° 10' 51"
Pixel scale: 0.678 arcsec/pixel
Orientation: 170.960 degrees
Field radius: 0.324 degrees
Resolution: 2694x2134
Locations: Nedelkovo, near Sofia, Bulgaria
Data source: Backyard
NGC 7635, also known as the Bubble Nebula or Sharpless 162 was discovered in 1787 by William Herschel. At distance of ~7100 ly in constellation Cassiopeia, the bubble is 7 light years in diameter and is formed by very hot and massive O-star - the one at 6 o'clock near the border. The hot stellar winds forming the nebula are facing bigger resistance cold interstellar clouds in the lower part of the image than in the other directions, so the nebula expands uneven. This is the reason the star to be off the bubble center. The nearby cool hydrogen gas is shaped in pillars similar to the famous "Pillars Of Creation" and their presence is a sing of possible star formation activities.
Imaged in six nights- September 05, 06, 11, 12, 15, 16
Total 38 hours in subs: HII - 51x15min, OIII - 48x15min, SII - 53x15min
SHO palette with synthetic luminance created from the narrowband stacks
Comments