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nebulae filter question

Started by sssss, 06/11/2008 03:23PM
Posted 06/11/2008 03:23PM Opening Post
I would like to get a set of filters for my zhumell 25x100 binoculars, some have advised they make a filter that will enhance nebulae and some clusters...is this true and which filter do I need? (zhumells have threads for filters) Thanks!
Posted 06/15/2008 06:46PM | Edited 06/15/2008 06:47PM #1
scott staszak said:

I would like to get a set of filters for my zhumell 25x100 binoculars, some have advised they make a filter that will enhance nebulae and some clusters...is this true and which filter do I need? (zhumells have threads for filters) Thanks!


I'll take a stab at this.


First check this article out:
http://pages.sbcglobal.net/raycash/filters.htm

Next, IME a UHC type filter is a better match for a 100 mm or so scope. The OIII is pretty dark near this size.

This is the place to get the UHC:
http://www.buytelescopes.com/product.asp?t=48&pid=10169&m=


However, before buying two UHC filters for the bino's, and the ergonomics of threading them into it's ep's during observing, or perhaps now buying a matched set of ep's to mount them in beforehand- and then switching out filtered ep's.....

...anyway, it's a pretty expensive addition to do. An alternate consideration might be $200 more in portable aperture.