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Originally Posted by Soldant
1) Is it even worth putting a filter on the ETX-70, or is it too small to even warrant it?
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Geez, it is asking alot of a 70mm scope. You might get some benefit out of a UHC filter, though. Orion's 'Ultrablock' is pretty good for the money and is worth considering. It'll only be helpful on emmision type nebula. No help at all on galaxies or star clusters. Here's an article what various filters will work best on, but unfortunately it's geared more toward the northern skies.
http://www.cloudynights.com/item.php?item_id=387
Any chance you can try one at a star party before you buy? I'm just concerned that it won't be much help in a 70mm scope.
