Still having trouble with backfocus. Previous attempts went really well, but now I'm using Astronomik 1mm LRGB filters, and the backfocus needs to be reset. I haven't found a very good result yet, so I'm diving in, trying to be analytical. It appears that my BF is too long now, so I've taken some material off of the T2 spacer that I made for the ZWO ASI 1600MM Pro. I've done this a couple times, and hopefully It's now thin enough. Here's some stats and some results will follow:
Ring Width 3: 8.2mm
Ring Width 2: 9.22mm
Original Ring width: 10.94mm
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