Chipped OAG prism

andrea tasselli · Mar 31, 2026, 05:36 PM

I just received my "first" OAG, bought used from eBay. It's the Antlia one with filter drawer and sports a 12x12mm prism. Upon inspecting the gizmo I found that the edge of the prism was chipped, as a roughly triangular shaped 2mm per side is missing on the side with reflective coating. While I'll try to get a refund (obviously) would the missing bit impact the useability of the OAG? I could paint it black but not sure this is a viable option.

Thanks for your thoughts

It may give you strange stray reflections from an irregular chip. That would be my concern