Hubble 1

Planetary Nebula in Cassiopiea

Uploaded 11/29/2001

This Planetary nebula, also known as IC289, is small at 35 seconds, but relatively bright at 12.3 magnitude. This made it a perfect target for the full moon nebula shoot done every month here during a time normally most telescopes are put to little use. The red oval shaped nebula has green tips from OIII emission, and a central star of 15.9 magnitude. No other deep sky objects are in the same field, here 14 mins on a side.

As is usual for bright planetaries, we shoot 2 each RGB frames of 10 minutes each, and synthesize a L channel image by adding the frames together. This greatly enhances the objects details and gives a much more solid signal to noise image.

Instrument:  12.5" f/5 Home made Newtonian
Platform:  Astrophysics 1200 QMD
CCD Camera:  SBIG ST7E w/Enhanced Cooling
Exposure:  LRGB = 60:20:20:20 (RGB Binned 2x2)
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing FMHW = 2.0 arcsec, Transparency 8/10 (but Full Moon)
Outside Temperature:  0 C
CCD Temperature:  -35 C
Processing:  Maxim DL, Photoshop, AIP4WIN, PW Pro.




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