Comet C/2007 N3 Lulin

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Date: 28 February 2009
Location: My back garden in suburban London.
Exposure: 150 x 30sec over a 90minute period
Telescope: Skywatcher ED80 600mm at F7.5 (no focal reducer) on Skywatcher EQ6 mount.
Camera: Modified Canon EOS 350D
Guiding: Nikkor 300mm lens with x2 teleconverter & modified Toucam webcam.
Filters: IR filter
Processing: In IRIS, sigma stacked on the comet head to enhance comet against star background. 4x4 binned. Gradient removal.
Comments: At 600mm focal length, comet Lulin was moving 5 pixels per minute (before binning)!