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Thanks Dean for your help,
I've tried the 40mm with the 0.67 reducer. But haven't yet got the equipment to get a bigger tfov then that. I have my eye on a 2inch visual back and diagonal and ep's etc but haven't pulled the trigger yet, but will as the lumicon uhc I purchased on the trades here, is 2in.
The Rdf is reasonably aligned with the scope, as once all setup the smaller targets (planets) slew into EPs with relatively high magnification. Although not perfectly centered most of the time. I will try to get the ref better aligned again.
As to recollimating the sct, I've not done so ever, since purchase. I don't really know how to yet. I've checked the collimation with the defocus method and I seem to get a nice concentric pattern. I will take the plunge however and learn to check and perform collimation properly to see if that's what's causing the fuss.
I'm pretty amazed at the views I'm getting with the bins though....I've not been a mad purchaser of things Astro since starting (resistance is futile I know), but these problems have me eyeing a pair of luxury image stabilized bins or a massive light bucket like a 16in dob!
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