I use the 1.25", c-mount, t-thread male and female caps without any issues - much better than the plastic push on caps.
However I don't seem to be able to get on with the 2" caps. I've ordered several, but each piece of kit I have tried to use them on (Baader, SW, WO) has threaded the cap on first use.
FLO Threaded Caps
Rating (max 5):
5
Very good quality - Stephen
Ordered on the weekend arrived Tuesday - doesn't get better than that! Although it actually does get better because these screw in/on adapters are superb quality and will save me all sorts of grief when I remove items from the observatory and want to 'plug up' exposed tubing to keep the dust out - I am fanatical about this but have never had enough caps to go around! Highly recommended and what a surprisingly nice material Delrin is.
FLO Threaded Caps
Rating (max 5):
5
Superb quality - Andrew
I made a large order of these for all my eyepieces as my eyepiece case has cutouts for 1.25" and 2" barrels - no room for eyepiece caps! These screw on caps are ideal as they are in line with the barrel. The quality of manufacturing is fantastic, and they screw on effortlessly. Unfortunately Delrin is not the hardest material, so the surface will inevitably show scratches with use.
One very minor drawback is that they are very slightly larger than barrels, so do not fit into eyepiece holders while attached, if you would want to do that. Another thing to note is they protrude about 5mm into the eyepiece when fully screwed in, so beware of convex field lenses that sit close to the end of the barrel.
