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Hi Jeanette, I don’t have Ioptron mount but I got two GStar cameras and I think that with 200mm lens and 2.56second maximum exposure GStar will take reasonable images with almost any mount that tracks the stars at all. I used GStar and 135mm lens on very old Nexstar mount that could keep star in field of view for only about 6 minutes and images were OK.
But if you intend along the way to get camera that can take longer exposures then better mount would be way to go.
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