Bubble Nebula – NGC7635
Bubble Nebula – NGC7635
This is a quick session of about 5 hours in data capturing the bubble nebula. Ha, Oiii, Sii narrow band imaging captured in Hubble color palette. This little bubble is about 7 light years across and 7100+ light years away from earth. It’s located near Cassiopeia.
The star inside here is about 45 times the size of our sun. Super hot gas is blowing away from the star so quickly (4 million miles per hour) and it blows any interstellar gas along with it to form the bubble. This formation was first discovered in 1787 by William Herschel… and in 10-20 million years is likely to go supernova.
Equipment
Telescope: Celestron Edge HD 8″ with .7x Focal Reducer (1400mm focal length)
Filters: Ha, Sii, Oiii 6nm ZWO Filters
Main Camera: ZWO ASI 1600mm-pro Monochrome
Mount: Skywatcher EQ6r-Pro
Guide Scope: William Optics 50mm Uniguide
Guide Camera: ZWO ASI 290mm-mini
Computer: ASIair PRO
Location
Location: Pendleton, Oregon
Bortle: 4
Long & Lat: 45.67N, 118.79 W
Shoot Parameters
Ha: 40x300″
Oiii Filter: 15×180″
Sulfur Filter: 15×180″
Calibration Bias: 20
Calibration Dark: 20
Calibration Flat: 20
Integration Time: ~5 hours total
Gain: 139 (unity)
Cooling: -10
Processing Software: Astro Pixel Processor, Starnet, ASIair, Photoshop CC