Fringe killer

[Zul]

Hello. Anyone tryed fringe killer filter with small refractor like ST80? Does it work? Thank you.

[leelee970]

Yes, I have a long FL 80mm refractor and it does help.

Lee

[Fozzie]

Have a look at this link... very usefull I think.. I was researching a few weeks back..

http://stargazerslounge.com/topic/30187-baader-ca-filter-comparison/

Clear skys

[Zul]

Thanks guys. Anyone tryed fringe killer or semi APO filter with ST80 or any other fast refractor?

[Space Dragon]

I've had the Semi Apo, Fringe Killer and 495 Longpass with a 152mm F/6 and ended up keeping the 495.

It cut the most CA but does give a yellow cast, most noticeable on Luna and Jupiter but you soon get used to it.

For me it seems to tighten up focus and brings out detail, I was seeing feint companion stars I was not seeing before.

The SA is more neutral but cuts less CA and the FK cuts a bit more but not as much as the 495 and also imparts a yellow cast.

There's no right or wrong rather what you personally prefer.

[Space Dragon]

I also found light loss to be less in the 495, something that may be relevant in a smaller aperture refractor.