The NGC1275 Galaxy Group

Galaxy Cluster in Perseus

Uploaded 12/8/02

Select an image size for a larger view: 800 x 600 1200 x 800 1530 x 1024 (Full Size)

A galaxy packed field of view, containing almost as many galaxies as there are stars in this image. The brightest central object is NGC1275, or Perseus A radio galaxy, is an 11.9 magnitude peculiar object, with a very active core. For size, it is 2.2 arcminutes and the center object in this cluster. Most of the galaxies in this field are elliptical types, and few show any details. Except for two objects, they are a tawny yellow color. The two exceptions are NGC1268 on the right edge, which is bluish, and a very strange object on the top on the left side known as PGC 12490 classed as SBR Pec. It has some structure. The faintest galaxies in this image are 19th magnitude, and faintest stars 21.

Three versions of this image are offered. The largest full size image is posted so you can pan around in this group and see the large numbers of very faint 18th and 19th magnitude objects that are in the background. The smallest does not show these, but gives a good overall impression of the richness of the field.

Processing: Calibration: Maxim DL, Subframe summing: Sigma, RL deconvolution: AIP, DDP: Maxim, RGB Combine: Maxim, LRGB align: PWPro, LRGB Combine:PS 7.

Instrument:  12.5" f/5 Home made Newtonian
Platform:  Astrophysics 1200 QMD
CCD Camera:  SBIG ST8i
Guider: SBIG ST4
Exposure:  LRGB = 60:20:20:40 (RGB Binned 2x2)
RGB Combine Ratio:  1: .8: 1.2
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing FWHM = 3.8 arcsec (Maxim DL - 10min subframe), Transparency 8/10
Outside Temperature:  5 C
CCD Temperature:  -20 C
Processing Tools:  Maxim DL, Photoshop, AIP4WIN, PW Pro, RW Debloomer.


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