Quote:
Originally Posted by TimboS
1) Do I need an LPR filter for each eyepiece?
2) When is a Barlow not a Barlow? i.e. is all this "baffling" and so forth bit of a marketing gimmick, or really worth it? If I had to pick from the Shorty, Shorty Plus, Ultrascopic and Deluxe, which do I go for and why?
3) Is it best to pick a Barlow from the same manufacturer as your eyepieces for, um, not sure how to say it, but optical uniformity or things along those lines?
Tim
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In my opinion...
#1 - no, one filter (assuming it is the same barrel size as all of your eyepieces 1.25 inch/ 2 inch) can be used on more than one eyepiece...you just thread it on and off. I'm not sure I would recommend an LPR filter...they will "filter" out some of the excess light...but better to spend the money on petrol and get to a darker sight (in my opinion)...If you feel must get a filter, then I would recommend a UHC over an LPR. I have both and get much more use out of the UHC.
#2 - generally speaking, you get what you pay for...if you are a serious observer (or will become one) I suspect that you will notice the difference in the end. A good time to go to a viewing night and try before you buy if possible. An optical chain will only be as good as it's weakest link...
#3 - Not sure there is an advantage really unless you are going to be on the "high end"...an Ethos in a cheap barlow probably isn't a good look (but I have not tried it)