I really like my GSO 2" 2x Barlow for 2 reasons:
1. It gets rid of the seagulls in my GSO 2" 30mm Superview EP,
2. It make a great 2" extension tube by removing the Barlow lens.
It's 'across the field' quality as a Barlow is questionable with other EP's apart from the 2" 30mm Superview, but for it's price it does a pretty good job
Worth it
