NGC2997

Spiral Galaxy in Antlia

Uploaded 2/14/03

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Skimming low over the treetops from my backyard location, this low surface brightness galaxy is technically bright at magnitude 10.1, however it is spread over a large area of over 10 arcminutes, concentrating on the nucleus. The arms are very faint, and here is hinting at the details that can be had in the southern hemisphere. This is a SABc spiral, and has a tawny core and bluish arms. Several anonymous galaxies can be seen to the lower left in the largest image, the brightest is 16th magnitude.

Instrument:  12.5" f/5 Home made Newtonian
Platform:  Astrophysics 1200 QMD
CCD Camera:  SBIG ST8i NABG
Guider: SBIG ST4
Exposure:  LRGB = 60:20:20:40 (RGB Binned 2x2)
RGB Combine Ratio:  1: 2: 4
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing FWHM = 10 arcsec (Maxim DL - 10min subframe), Transparency 8/10
Outside Temperature:  5 C
CCD Temperature:  -20 C
Processing Tools:  Maxim DL, RG Sigma, Photoshop, AIP4WIN, PW Pro, RW Debloomer.
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