My first attempt to climate telescope was with phone camera too. But I quickly realised, that is impossible to place phone at exact center of focuser tube. That wouldn't be issue if at least you could place phone at exact same spot near the center, but that's is just impossible. At least it was for me. What's the point in collimating telescope if your optical path constantly changes? Sure you can do collimation each time you take phone off and back on, but good luck with that. It will be OK for visual observation, but not for astrophotography.

That's why I'm using raspberry pi camera with special case designed and 3d printed, the way that it can be screwed on top of my focuser. This way optical path stays the same even if I take my camera off and put it back on.


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