Planetary Nebula in Cepheus

Uploaded 9/25/2001

Although small at 48 arcseconds, this denzien of the deep northern sky reveals a whealth of details in CCD images. Quite bright at magnitude 10.7, this object can be easily photographed from city locations and still show plenty of detail. The central star is 11.5 magnitude, and the object appears as a faint glowing patch in my 20 inch visually.

This image is another example of a LRGB made from a set of RGB frames binned 1x1 for color, then combined to a single L channel for a synthetic L frame. This allows a more varied type of processing and complete control over the luminosity and color channels separately.

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 (Synth. L)
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing 8/10, Transparency 8/10
Outside Temperature:  21 C
CCD Temperature:  -20 C
Processing:  Maxim DL, Photoshop, PW Pro.




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