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I agreeImaging telescope or lens:Explore Scientific 152 mm Carbon Fiber
Imaging camera:ZWO ASI1600MM-Cool
Mount:Astro-Physics Mach 1 GTO
Guiding telescope or lens:Orion 80mm Short Tube
Guiding camera:Starlight Xpress Lodestar x2
Software:Sequence Generator Pro, PixInsight, PHD2, Stellarium, Photoshop CS5, SkySafari Pro
Filters:Astrodon Ha 5nm, Astrodon SII 3nm, Astrodon OIII 3nm
Accessories:QHYCCD PoleMaster, ZWO 8x 1.25" Filter Wheel (EFW), MoonLite CFL 2.5" Large Format Focuser
Resolution: 6008x4800
Dates:July 5, 2017, July 6, 2017, Aug. 16, 2017, July 3, 2018, July 10, 2018
Frames:
Astrodon Ha 5nm: 96x240" (gain: 139.00) -20C bin 1x1
Astrodon Ha 5nm: 111x120" (gain: 201.00) -20C bin 1x1
Astrodon OIII 3nm: 126x240" (gain: 139.00) -20C bin 1x1
Astrodon OIII 3nm: 325x120" (gain: 201.00) -20C bin 1x1
Astrodon SII 3nm: 132x120" (gain: 201.00) -20C bin 1x1
Integration: 33.7 hours
Darks: ~50
Flats: ~50
Bias: ~250
Avg. Moon age: 18.70 days
Avg. Moon phase: 60.39%
Bortle Dark-Sky Scale: 6.20
Astrometry.net job: 2146275
RA center: 350.166 degrees
DEC center: 61.179 degrees
Pixel scale: 0.192 arcsec/pixel
Orientation: 290.545 degrees
Field radius: 0.205 degrees
Data source: Backyard
NGC 7635, also called the Bubble Nebula, Sharpless 162, or Caldwell 11, is a H II region 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 magnitude young central star, SAO 20575 (BD+60°2522). 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. It was discovered in 1787 by William Herschel. The star BD+60°2522 is thought to have a mass of about 44 M☉.
There were some artifacts I didn't care for at full resolution I fixed and cropped it in a little tighter.
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