The famous Ring
nebula M57 is supernova remnant.
Close-up view: Celestron 9,25 at f6,3, SXVF M8C CCD (22x60s, 10x120s), CGEM mount, QHY5 guider.
Composite LRGB image of M57 is obtained through a Celestron 9.25 at f3,3 and
Celestron Pixcel 237 CCD camera (luminance 35x8 second , RGB 30x 8 second -
2x2 binning). Central star with magnitude 14,7 is challenge even for bigger
amateur telescope.
LRGB
image assembled of luminance image and RGB image in medium resolution
of Pixcel 237 CCD camera (320x240, 10x7 second exposure each of RGB component). Processed
in Photoshop.
Some of my first
deep-sky image: M57 through a Celestron 8 on Kodak Gold 400 and exposed 10 minutes
(1996).
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