Celestron Ultima 12.5mm
This is an original Celestron Ultima eyepiece. It's a five-element 'pseudo-Masuyama' design that offers better correction and more eye relief than a Plossl. AFOV is 52°.
Condition is very good. There is, however, a small triangular black mark at the edge of the field of view. It seems that some part of the baffling or something is intruding slightly into the light path. I only notice it when looking at the moon.
Asking $60.
Enquiries by PM please.
Last edited by MortonH; 28-08-2024 at 03:50 PM.
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