查看完整版本: Protective filter for scope

Protective filter for scope

I am new around and I have just acquired a scope.  Please advise if I should have a protective filter installed on the scope to protect the front element.  I intend to do some digiscoping with the scope.

It's long struck me as a bit odd that scopes don't even have a thread to mount a purely protective filter, which could be changed when scratching occurs, as it inevitably will.

Maybe some do but I don't think my 3 or 4 year old Swarowski does.

Mike Turnbull

I just bought a Swarovski STS 80 HD which accepts a 82mm filter.  I just wonder what birders do, in particular those who have great experiences with digiscoping.  Specifically, I am worrying if an installed filter would result in vignetting.  A quality 82mm filter is not cheap, well for me.

Please advise.

[[i] Last edited by jojomau at 2/10/2010 09:51 [/i]]

我從來無諗過係單筒加 filter，我覺得無呢個需要 3551smile445

i have added a filter in my scope.  up till now, i have not found any vignetting problem while photo taking.  

but i have to claim that i am just a newbie in digiscoping and my gear is leica apo-televid 82.  here are the photos for reference

@ 30x
[img]http://images4.fotop.net/albums2/kittykoo/Digiscoping/DSCF1893.jpg[/img]

after PS
[img]http://images4.fotop.net/albums2/kittykoo/Digiscoping/DSCF1893b_001.jpg[/img]

[[i] Last edited by kkitty at 2/10/2010 09:30 [/i]]

我没有在单筒前加滤镜，平时都是拉出遮光罩的。

Thanks to Kitty for positive response and the effort of posting references for me.  

Thanks to other inputs as well.  Now I realize there are some scopes with no filter thread and some birders are very confident in handling their equipment.

[[i] Last edited by jojomau at 3/10/2010 10:12 [/i]]