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Skywatcher EQ5 issues
Hi All,
Last night was first time with a brand new Skywatcher EQ5. Telescope is a William Optics GT71. Camera is ZWO585MC.
Images have a strange circular pattern to them, yet the stars are okay for 3 and 5 minute exposures. Guiding was acceptable
Darks and Biases do not show this issue.
Any advice on possible causes is appreciated???
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