NGC147 Elliptical Galaxy In Cassiopeia

Uploaded 11/5/10

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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 HOME GALAXIES EMISSION NEBS REFLECTION NEBS COMETS GLOBULARS OPEN CLUST PLANETARIES LINKS