Nagler solid eyecup replacement?

[markse68]

Does there exist a more solid eyecup alternative for a Nagler 16mm? Id like something that an eyepiece cap can attach to more reliably than the floppy eyecup that comes as standard

Mark

[Don Pensack]

The issue isn't the eyecup, it's the cap.

Change the cap to one that fits better and the problem goes away.

Measure the diameter of the rubber eyecup when folded down and look for a cap with an I.D. 0.5-1.0mm smaller so that when it's pressed on it is tough to remove.

And it will stay on.

This is not a problem with just that eyepiece, many TeleVue eyepieces have caps that slowly inch their ways off the eyepieces just sitting there.

The 24mm Panoptic is notorious for that.

[markse68]

Hi Don, I want to use a tethered cap like off a spotting scope as it's for my finder and I don't want to lose it. The problem is there's no room for the tether ring so the TV eyecup when folded back, sits on the tether so doesn't fold back the way it should. Just wondering if there was an alternative as in the up position its very floppy and the down position doesn't work very well. I may have to 3d print one

Mark

[RT65CB-SWL]

There are a few places that sell vinyl pipe/tube end caps. I get mine from here... https://bpfonline.co.uk/search.asp?catid=2979