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Old 19-07-2015, 09:26 AM
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ThatGuy (Guy)
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ThatGuy is offline
Join Date: Jun 2015
Location: Perth
Posts: 6
Field flattener and focus issue

Hi all,

I recently made the jump to AP and I've hit a small problem achieving focus.

My set up is Megrez 90 > WO pflat4 feild flattener > T ring > canon 550d

My problem is that when i wind the focuser all the way in I am still not quite in focus.

Anyone know why I can't achieve focus? I'm not sure if it's the flattener (WO states that it works well with the Megrez 90) or if I just need an extender or reducer or something.

I should also mention that i can happily achieve focus with a diagonal and eyepiece.

Any help would be great, thanks!

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