Emission Nebula in Cepheus

Uploaded 10/11/08

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Located in a star rich field in Cepheus, this bright gem is also known as Sharpless 2-158. Spanning 10 x 6 arc minutes in size, this is part of the larger bubble nebula complex and consists of two 11th magnitude hot stars surrounded by a structured assemblage of bright looping hydrogen nebulosity.
Instrument: 12.5" f/5 Home made Newtonian Mount: Astrophysics 1200 QMD CCD Camera: SBIG 10XME NABG with Enhanced Water Cooling Guider: DSI PRO w/Lumicon Newt Easy Guider Exposure: HaLRGB = 120:40:40:40 AstroDon RGB Combine Ratio: 1: 1.05: 1.11 Location: Payson, Arizona, Elevation: 5150 ft. Sky: Seeing FWHM = 5 arcsec (Maxim DL - 10min subframe), Transparency 8/10 Outside Temperature: 55 F CCD Temperature: -30 C Image Processing Tools: Maxim DL: Calibration, deblooming (Starizona Debloomer), aligning, stacking Gralaks Sigma: Stacking PixInsight: Curves, Deconvolution, noise reduction Photoshop CS2: Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS