GSO barlows...

[Craig.a.c]

I am hoping that some one might be able to help me out.
I was looking to get a 2" barlow for my telescope. On Andrews web site they have:
ED 2x magnification, 2" (with 1.25" adaptor), FMC, 2 element, achromatic and
2x magnification, 2" (with 1.25" adaptor), FMC, 2 element, achromatic.
Could some one tell me what the difference is (apart from the price)?

Cheers - Craig.

[Kevnool]

Hi Craig when i purhased my 10" lightbridge they threw in a 2" ED Barlow with the 1.25" adaptor...........It works a treat ,but i dont use it that often considering i mainly use a 30mm or the 14mm eyepiece....cheers Kev.

[janoskiss]

Me and a friend compared ED and non-ED GSO 2" 2x barlows in a 10" Dob. Visually we could not detect any difference on or off-axis on a whole range of objects from planets and stars to deep sky. On inspection there seems no difference either.