Quote:
Originally Posted by Globular3
Over the last few days, I've reassessed my needs and a 5x barlow may be better regards the power that I need for the moon and planets.
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I'd probably steer clear of the GSO 5X -- I've heard from a couple of sources (online and offline) that it's not brilliant, with internal reflection that makes it essentially unusable for observing the Moon in particular. Here's one review that compares the 2.5X and 5X (it doesn't label them as GSO Barlows, but they definitely look like the GSO models from the photos):
http://www.astromart.com/articles/ar...article_id=600
I also have the 2" 2X ED GSO Barlow and I'm quite happy with that, though I guess that doesn't help you much if you can only use 1.25" models.