December 22, 2001

Uploaded 12/27/2001

Working with objects this bright is not the norm with us, most objects we photograph are dim and very distant deep sky objects. The recent opposition of Jupiter has opened up new opportunities during the full moon period, usually a time of few celestial portraits for astrophotographers. This image is shot at f/10 using a Televue Big Barlow on my 12.5 inch, and despite the small image on the sensor, is close to seeing limited. The limb darkening, which gets removed during ME deconvolution was added back in in Photoshop by using the original unprocessed image as a mask. This retains the more conventional 3d spherical look.

Processing: Maximum entropy deconvolution, and unsharp masking was used for the L channel, and RGB channels. Photoshop 6 with soft light masking to add original limb darkening back in.

Instrument:  12.5" f/5 Home made Newtonian
Platform:  Astrophysics 1200 QMD
CCD Camera:  SBIG ST7E w/Enhanced Cooling
Exposure:  LRGB = .1:.2:.2:.2 
Filters:  RGB Tricolor
Location:  Payson, Arizona
Elevation:  5150 ft.
Sky:  Seeing FMHW = 2.1 arcsec, Transparency 8/10
Outside Temperature:  -5 C
CCD Temperature:  -25 C
Processing:  Maxim DL, Photoshop, AIP4WIN, PW Pro.




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