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Hi Marc the new version of the hyperstar looks interesting. I spent a few hours years ago with a friends c11 with hyperstar and sbig 237 camera with internal filter wheel, because of the tiny sensor the collimation and critical focus seemed hard to achieve. There has been some discussion that narrowband filters not performing well with very fast optics and the steep light cone converging on the filter, don't know if that is a problem. Don't let me put you off if you nail focus and collimation it will be a killer setup.
Clear skies Ken
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