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Originally Posted by Miaplacidus
Steve, I had that very same dream. The 17mm T4 is meant to be something special. What are your impressions of it?
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Blackout and kidney beaning is a major problem with this eyepiece. And they present themselves as soon as you get close enough to the lens to see the entire field. It kind of defeats the purpose of having that huge FOV. Being at a dark site with dark adapted eyes helps but does not eliminate the problem. You can definitely forget about seeing anywhere close to the full field with the Moon in view.
But I've still got to give the EP more of a chance before making up my mind about it. Despite the blackout issues, I did enjoy it very much under dark skies for one night.
