Messier 57 - The Ring Nebula
(click on the image for a larger version)		Messier 57 (M57 - nicknamed the "Ring Nebula") is a planetary nebula found in Lyra.  It is the remnant of a star like the sun that finished its life-cycle by ejecting its outer layers leaving behind a stellar remnant called a white dwarf.  The image is a combination of 25 minutes (300 second subs) with a ST7 for luminance, and a 24 minute (60 second subs) image using the DSLR for color. -  ISO 800 -  F/10 -  ST7, 300 second exposures (x 5), 25 minutes total time. -  Canon Rebel XSi, 60 second exposures (x24), 24 minutes total time. -  Direct images through the 8-inch LX200GPS -  Unguided (DSLR for color) -  Selfguided (ST7) -  Location: Trillium Observatory July 2010