Peculiar Galaxy and Galaxy Cluster AGC426

in Perseus

Uploaded 12/4/10

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This field includes scores of galaxies ranging from the brightest - NGC1275 at magnitude 11.9 to the faintest at the sky limit around 20th magnitude. (its hard to find galaxy magnitudes once you get beyond around mag 18 or so) NGC1275 is a very peculiar object, with twin hydrogen sprays extending out both sides (E-W) resolved by the Hubble to consist of very fine crab nebula like filaments. At a size of 2.2 arc minutes its quite small because of its remote distance.

You will note that nearly all of the galaxies - except one at the top - are quite tawny in color. The inter galactic dust tends to yellow more distant objects these measure a B-V index around 1.0, very yellow indeed.

At the top and just to the right is another closer object, a tiny blue barred spiral listed as an SB peculiar. It is about the only blue galaxy in this field! It is 16th magnitude and obviously has active star formation occurring at this time. (Active galaxies are typically much more blue from new hot stars)

On the right edge, a nice face on spiral, NGC1268 shows some details. Its listed at 14.2 magnitude.

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 = 2.5h total AstroDon RGB Combine Ratio: 1: 1.05: 1.2 Location: Payson, Arizona, Elevation: 5150 ft. Sky: Seeing FWHM = 8 arcsec (Maxim DL - 10min subframe), Transparency 8/10 Outside Temperature: 35 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