Abell 39

Planetary Nebula in Hercules

Uploaded 4/20/02

This stunning object is a very dim perfectly formed ring planetary nebula, at a faint 13.7 integrated magnitude. The 15.6 magnitude blue central star is perfectly centered in this remarkable object. It is big too, spanning 3 arcmins in diameter, and has a splendid turquoise coloration. There are numerous anonymous galaxies in this field. Two are inside the nebula itself, one is located 8:00 near the rim, and at the very top right on the rim is a fainter one. A subject for a much larger telescope might be the galaxy cluster located to the lower right, just to the right of the bright star. This anonymous chain seems to have quite a range of colors from reds to bluish.

Instrument:  12.5" f/5 Home made Newtonian
Platform:  Astrophysics 1200 QMD
CCD Camera:  SBIG ST7E w/Enhanced Cooling
Exposure:  LRGB = 60:20:20:36 (RGB Binned 2x2)
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing FMHW = 2.8 arcsec, Transparency 8/10
Outside Temperature:  10 C
CCD Temperature:  -25 C
Processing:  Maxim DL, Photoshop, AIP4WIN, PW Pro.




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