Posts Made By: Ted Slotwinski

I have a TV-85 on an Alt-Az and I also have the 3-6 Nagler zoom. While it does have a narrower FOV than the 3.5 Nagler (50 deg vs 82), I find it very useful.

The main advantage is that you have many power chioces with the zoom eyepiece ... 100x-200x ... so you can use it in all sorts of seeing conditions and on many different objects. With the 3.5 Nagler, you're pretty much locked into 171x ... which really needs good seeing to appreciate. I'd get the zoom if I were you.

Here are a couple of nicely written opinions on filters and their uses that may help you make your decision.

http://www.cloudynights.com/howto/filters.htm

http://www.sciastro.net/portia/advice/filters.htm

go out and make some of your own."

-George Carlin