M57
Ring Nebula in Lyra

Click image for a larger view

Location & Date Backyard, Abbott Observatory June 23-24, 2007
Temperature 50'sF, Transparency - Very Good, Seeing - 4/5
Telescope TMB 130SS Refractor, F/7 on a Losmandy G11, Prime Focus, Image scale 1.68 arcsec/pixel
Camera SBIG ST-2000XM monochrome camera w/CFW8 filter wheel
Custom Scientific LRGB filters
CCD temp -20C
Exposure Times (R) 6X5m, (G) 7X7m, (B) 7X7m Bin 1X1
(Ha) 6x20m and 9x30m Bin 1X1
Other Information Image acquisition and guiding - CCDSoft V5
Focus - Moonlite Motorfocus w/FocusMax

Image Processing * Images Plus 2.75 - Calibration, Grading, Alignment, Adaptive Add Combine, mild DDP, RGB combine.
* Adobe CS - Levels, Curves, Masks, Sharpening, Cropping, JPEG conversion

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© 2007 Michael A. Siniscalchi