Grimstod
Machinist, Designer, and Shooter.
I have done this a few times now with telescopes that I use for astronomy. You take out the lens sells and blacken the edges of the lenses. This increases contrast by a noticeable margin.
No I just acquired an SWFA 5-20x50 and I also have a Leupold 40x Benchrest scope. Both do not have blackened lens edges. I am contemplating taking them apart and blackening the edges since it would increase contrast and probably make bullet hole siting easier. Think is this wold ruin nitrogen purge. Is it easy to re nitrogen purge a scope. I would think that most scopes would eventually leak anyway.
Here is a video example of blacking lens edges.
No I just acquired an SWFA 5-20x50 and I also have a Leupold 40x Benchrest scope. Both do not have blackened lens edges. I am contemplating taking them apart and blackening the edges since it would increase contrast and probably make bullet hole siting easier. Think is this wold ruin nitrogen purge. Is it easy to re nitrogen purge a scope. I would think that most scopes would eventually leak anyway.
Here is a video example of blacking lens edges.