M57
- The Ring Nebula
M57
- The Ring Nebula - Planetary Nebula in Lyra
by
Bob and Janice Fera
Parallax
Instruments 12.5" f/9 Ritchey Chretien
SBIG
ST-10XE
Astrodon
LRGB and 6nm Ha filters
LHaRGB
composite (120:540:45:45:45 min -- 13.25 hours total) processed
in CCDops, MaxIm/DL (with RC-Astro plug-in), Gralak Sigma, AIP4WIN,
PixInsight LE and Adobe Photoshop
Taken
May 31-June 3, 2005 from the still-under-construction Eagle Ridge
Observatory, Foresthill, CA
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