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I use Baader Planetarium's.
They're meant to be parfocal, but, I thought I'd put it to the test since I've resolved my RoboFocus issues.
Last night, I decided to run autofocus on each filter on the same star at the same temperature (639 units according to the RoboFocus).
All 7 filters (LRGBHαSIIOIII) came to focus within 2 counts of each other. Quite impressed! My microstep/pause and step/size are both set to 4. I seem to be hitting the CFZ quite well with those settings, but, the next night there's dodgy weather, I will change both to 2 and redo my V-curves and then run my autofocus test on each filter again to see whether the numbers vary wildly or not.
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Last edited by Octane; 14-10-2015 at 03:30 PM.
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