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This extremely
            low surface brightness nebula can just barely be detected visually
            with a 20 inch telescope using an OIII filter, and a dark high
            altitude Arizona dark sky site. The primary reason besides being
            spread out over 6 arcminutes of sky, is that the dominant wavelength
            in this nebula is a very deep crimson red, with little radiation
            in either the green OIII or blue Hb emission lines. This G2V
            balanced image shows us a very deeply colored nebula, with two
            bright knots on either side of a deep blue 17.1 magnitude central
            star. The structure resembles the Helix nebula in form, but of
            course considerably fainter.

            
Sharp eyed imagers
            will also see a small nebulous patch just off the lower left
            edge of the nebula. This is MAC0751+0257, a 17th magnitude anonymous
            galaxy.

            
The precise
            calibrated color and saturation in this LRGB image was maintained
            with a process I will be posting in an article in a week or two.
            

Instrument:  12.5" f/5 Home made Newtonian
Platform:  Astrophysics 1200 QMD
CCD Camera:  SBIG 10XME NABG with Enhanced Water Cooling
Guider: SBIG ST4
Exposure:  LRGB = 60:20:20:20 (RGB Binned 2x2)
RGB Combine Ratio:  1: 1.05: 1.11
Filters:  AstroDon RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing FWHM = 6 arcsec (Maxim DL - 10min subframe), Transparency 8/10
Outside Temperature:  35 F
CCD Temperature:  -30 C
Processing Tools:  Maxim DL, Gralaks Sigma, Photoshop, PixInsight, CCDOps Debloomer.
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