NGC147
Elliptical Galaxy In Cassiopeia

 

            
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 A
            member of the Local Group of Galaxies, this dwarf elliptical
            is a companion to the Andromeda Galaxy M31, and occupies a substantial
            portion of this half degree wide field of view. It forms a physical
            pair with the dwarf galaxy NGC185. This 10.5 magnitude object
            spans 14 arcminutes wide and shows little resolution other than
            a vague granular appearance. The B-V index of .95 yield a slightly
            tawny appearance, from countless billions of yellow and orange
            super giants that dominate the stellar population. The galaxy
            is classed as an E5 Peculiar in Megastar.
Instrument:  12.5" f/5 Home made Newtonian
Mount:  Astrophysics 1200 QMD
CCD Camera:  SBIG 10XME NABG with Enhanced Water Cooling
Guider: Meade DSI Pro  w/Lumicon Newt Easy Guider
Exposure:  LRGB = 120:20:20:20 
AstroDon RGB Combine Ratio:  1: 1.05: 1.2
Location:  Payson, Arizona, Elevation:  5150 ft.
Sky:  Seeing FWHM = 5 arcsec (Maxim DL - 10min subframe), Transparency 9/10
Outside Temperature:  55 F
CCD Temperature:  -30 C
Image Processing Tools: 
Maxim DL:  Calibration, deblooming (Starizona Debloomer), aligning, stacking
PixInsight:  Curves, Deconvolution
Photoshop CS2:  Curves, Color Correction, Gradient removal (Grad Xterminator), Cleanup

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