M57 "The Ring Nebula" - In Lyra

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Imaging Details:
Imaging Date:   June 17-22nd, 2004
Imaging Site:   ARGO, Oregon - USA
Seeing Conditions:   Variable - Excellent to Poor (1.5-3.0 arc-seconds)
Telescope:   Celestron C-14 @ F11.2 (3988mm)
Imaging Camera:   SBIG ST-10XME w/CFW-8A and AstroDon LRGB Filters
Exposure:   (LR-RGB) L=140min R=125min G=75min B=75min, Binned 1x1 LRGB
Mount & Guiding:   AP-1200GTO, Guided with SBIG AO-7
Processing Notes:   CCDSharp - 10 Iterations of Lucy-Richardson Deconvolution on the MaxIm calibrated LRGB channels.
MaxIm DL/CCD - Dark subtraction calibration, sigma combined, and color combination of Lucy-Richardson Deconvoluted LR-RGB frames.
Photoshop - Levels, curves, color balance, and unsharp mask sharpening and star shaping.

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