Quote:
Originally Posted by Starkler
Mark firstly it wasnt my barlow. I did a quick comparison between a Celestron ultima barlow and the 2 inch GSO barlow using a pentax 14mm xl viewing Saturn. The gso barlow showed a LOT more scattered light giving a much brighter halo of light around the planet. The effect is like driving at night with a dirty windscreen as opposed to a clean one. This is the difference between quality anti-reflection coatings and mediocre ones.
Have you compared the gso to a better (more expensive) one using a quality eyepiece?
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Starkler, I was using both Pentax XW's when looking at Saturn as well. With a 10mm XW and a 7mm XW and as far as I could see, there was no scatter at all in either EP at 300x, (in a 12" GSO reflector), and at 350x, (in an 8" Antares reflector). I used to have a TeleVue barlow and there was no difference in quality when testing both barlows.
As far as the 2" GSO barlow of mine goes, it isn't "cheap" and it doesn't "suck".
Clear Skies!
-Mark