
Celestron 4SE Fine Focus Knob
thingiverse
This knob will significantly improve the sensitivity when focusing on a Celestron 4SE. I made it because the other ones I tried were too close to the telescope. This one will get in the way of a mounted camera, though. I highly recommend also printing one a https://www.thingiverse.com/thing:3021201 if you are having a difficult time focusing the 4SE.
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