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Eyepiece Thread Consistancy

Started by tbennett, 10/23/2018 04:50AM
Posted 10/23/2018 04:50AM Opening Post

I just purchased a new 17.3mm TV Delos and am unable to thread standard filters (one color and one IR from different manufacturers) more than 1/2 turn into the EP barrel. The same issue occurs while trying to attach the filters onto a couple other TV eyepieces (24mm Panoptic and 3-6 Nagler Zoom). The filters fit all my older TV Plossls and Celestron Ultimas and some of my newer TV eyepieces.

Any ideas on what's causing this?

Thanks, Tom