18mm Radian + cash for 18mm Delite
$100 cash + your $10 postage paid (total $110) to upgrade my 18mm Radian with an 18.3mm Delite.
My Radian is optically fine; it is just that the eyepiece barrel is too long with my Tak prism diagonal. It works fine with my other star diagonals, but my current preference is for using Tak Prisms.
Last edited by Tropo-Bob; 25-11-2020 at 07:58 PM.
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