Victor Meldrew
Well-known member
Just bought a new scope (Zeiss Diascope 85) and I'm wondering whether I should protect the big objective lens from the start. I can obviously see the advantage of doing so but the things that are worrying me are:
1. does it make sense to go to the expense of buying a scope with fluorite glass throughout only to put another layer of non-fluorite 'glass' in front of it?
2. you create an enclosed space which isn't nitrogen-filled and that will contain a certain amount of moisture.
Any thoughts?
I'm not intending to do any sea-watching by the way.
1. does it make sense to go to the expense of buying a scope with fluorite glass throughout only to put another layer of non-fluorite 'glass' in front of it?
2. you create an enclosed space which isn't nitrogen-filled and that will contain a certain amount of moisture.
Any thoughts?
I'm not intending to do any sea-watching by the way.