M57 - The Ring Nebula



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Date: 4 June 2008
Location: My back garden in suburban London
Exposure: 18 x 4 min at ISO800
Telescope: Celestron C11 with F6.3 focal reducer on Skywatcher EQ6 mount.
Camera: Canon EOS 300D
Guiding: Nikkor 300mm lens with unmodified SPC900 webcam
Filters: Astronomik CLS filter
Processing: Stacked in IRIS, asinh dynamic range compression. Mild Gaussian deconvolution.
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