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Filter wheel

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I have a couple of filter wheel related questions...

The thread on my OIII filter must be a bit degraded, as it doesn't tighten up properly in the filter wheel. In fact, I removed the FW the other day to hear a nasty rattle. Thankfully, there was no damage but the filter had simply fallen out! Can anybody recommend anything non-permanent to add to the thread to improve the situation?

My SII filter is from Astronomik and not parfocal with the other (Baader) NB filters. Are all Baader's NB filters parfocal? If so, I think I'll replace it as it's quite annoying!


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Get some plumbers PTFE tape from a DIY store. A little bit wrapped around the filter thread will sort it.

Edited by Zakalwe

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