Troops:
Got a quick solution from the Shilo site. Aperture is too small. Dug out a Hadley eyepiece that I'd not tried yet for a Sharps. Started with the smallest aperture having the same issue, and stepped up to successively larger openings. About 1/3 of the way through the series, the issue went away.
As the great Pooh Bear once said, "Sorry for being a bother."
Last edited by 1minute; 01/07/18.
