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M17 - The Omega Nebula

Emission Nebulosity in Sagittarius

Uploaded 6/22/2001

One of the most intricately detailed hydrogen clouds in the milky way is M17, known as the Swan or Omega Nebula. This image was taken over two nights, the first for the hour of luminosity data, and the second night RGB color data. DDP was not effective on this object and only brought up the grain in the background. Instead, Lucy Richardson Deconvolution using CCDSharp was used to correct the seeing at this lower elevation, and a gamma curve in photoshop brought up the faint outer nebulosity. RL Deconvolution tends to reduce the dynamic range of an image, and kept the main bar from burning out.

Instrument:  12.5" f/5 Home made Newtonian
CCD Camera:  SBIG ST7E w/Enhanced Cooling
Exposure:  LRGB = 60:20:20:40 (RGB Binned 2x2)
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing 7/10, Transparency 8/10
Outside Temperature:  70 F
CCD Temperature:  -20 C
Processing:  Maxim DL, Photoshop, PW Pro, CCDSharp


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