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Old 19-07-2015, 04:59 PM
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ThatGuy (Guy)
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Join Date: Jun 2015
Location: Perth
Posts: 6
Thanks for the help so far, unfortunately still haven't worked it out.

So distance that is optimal for the Megrez 90 is 77.3mm.

Correct me if I am wrong here, but with the WO field flattener I should be able to adjust it to ~77.3mm?

http://www.williamoptics.com/accesso...AT4_Layout.jpg

At present even with the adjustment set to 66mm of back focus I still can't reach focus racked all the way in.

If I'm looking at trees about 70m away it is just out of focus.

If I'm looking at my fence 10m away i can achieve focus.

Could it be that my Megrez 90 is an older version (and the pflat 4 just won't work?

It certainly feels like the chip needs to be closer, not further away... but I'm probably wrong.
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