Mint condition - never used in the field. This is a 12.5 Orthoscopic guiding eyepiece with a illuminated reticle. It can be used to guide during astrophotography, or it can be used to measure angles between double stars, and it can also be used to measure features on planets or the moon. Diopter focussing for the reticle; variable intensity red led with batteries included. Manual explains in detail the various calculations possible with this premier eyepiece. $115.00 shipped to lower 48 states.
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