NGC 7293 (Helix Nebula)

 

Technical Details:

Optics: 12" ASA Astrograph at F/6.8
Mount: ASA DDM 85
Camera: SBIG STL-11000M
Filters: Astronomik LRGB filters
Dates/Times: 28,29,30 July 2011
Location: Rozhen
Exposure Details: Ha = 180 min, L = 60 min, R = 30 min., G = 30 min.,B = 30 min.
Subexposures: Ha = 30 minutes, LRGB = 10 minutes
Acquisition: CCD Soft
Processing: PixInsight, Photoshop CS
     
 

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