M27
Dumbbell Nebula

Click image for a larger view

Location & Date Backyard, Abbott Observatory August 22 & 25 & Sept 9, 2006
Temperature mid 70'sF, Transparency - Good, Seeing - 4/5
Telescope Celestron C8-N 8" Reflector F/5, Losmandy G11 mount, Prime Focus
Image scale 1.52 arcsec/pixel
Camera SBIG ST-2000XCM color camera
CCD temp -15C
Exposure Times 7 X 5 minutes - Color
20 X 15 minutes - 6.75 hours - Hydrogen Alpha
Other Information Image acquisition - CCDSoft V5
Guiding - Internal TC11 guider w/ CCDSoft Dither plugin
Focus - Moonlite Motorfocus & FocusMax
Astronomik 13nm Ha filter for Ha
Orion Skyglow filter stacked to a Baader UV/IR filter for color
Image Processing * Images Plus 2.75 - Calibration, Bayer Interpolate, Grading, Alignment, Sigma Clipped Average Combine, mild DDP, 5 iterations of R/L deconvolution.
* Adobe CS - Levels, Curves, Masks, Sharpening, Cropping, JPEG conversion

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© 2006 Michael A. Siniscalchi