NGC 7822

HαRGBOiii combination with aesthetic goals

Image Details:

A young star forming region in Cepheus 2,900 light years from here which is about 75 light years wide. In wider focal lengths, this nebula is often called the “Question Mark.”

Equipment:

  • William Optics Star71-II Petzval APO (345mm Focal Length, F/4.9)

  • ZWO ASI1600MM-P, ZWO Filters

  • Hypertuned Celestron CGEM-II

  • Autoguiding: Orion 50mm Guidescope + ZWO ASI224MC

Exposures:

  • Red, Green, Blue: 75, 73, 73 x 60” (Total: 3h 41m)

  • Hydrogen-Alpha 7nm: 357 x 180” (Total: 17h 51m)

  • Oxygen-III 7nm: 131 x 180” (Total: 6h 33m)

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 4

  • Capture Dates: 6, 11-12, 17-18, 25 September, 2021

Annotation

Annotated