Boltzman Brain
Image Details:
This is Sharpless 240, also called Simeis 147, a supernova remnant in the Taurus-Auriga area of the Winter sky. The supernova which created this expanding shell of gaseous filaments occurred approximately 40,000 years ago and the nebula is currently about 160 light years wide. From Earth, which is 3,000 light years away, this nebula appears over 6 times the apparent width of the Full Moon which places it relatively close to the Andromeda Galaxy in apparent size.
Equipment:
William Optics Star71-II Petzval APO (345mm Focal Length, F/4.9)
ZWO ASI6200MM-P, ZWO Filters
Hypertuned Celestron CGEM-II
Autoguiding: Orion 50mm Guidescope + ZWO ASI224MC
Exposures:
Red, Green, Blue: 71, 72, 74 x 120” (Total: 7h 14m)
Hydrogen-Alpha 7nm: 189x 300” (Total: 15h 45m)
Oxygen-III 7nm: 184 x 300” (Total: 15h 20m)
Misc Details:
Capture Software: AstrophotographyTool, PHD2 (guiding), Celestron CPWI (mount control), Pegasus Powerbox (dew heater control, power management)
Processing Software: PixInsight
Taken from: Wichita, KS, Bortle 5
Capture Dates: 6, 20-21 November, 16, 23 December, 2022, 8, 17, 19 January, 2023
