I have got only one 2" EP (a 30mm GSO SV) and wouldnt dream of barlowing it as it would defeat the purpose of me getting it.
Hi David,
I also own the 2" 30mm GSO Superview and I can tell you that it barlows very nicely in my 2" 1.6X Antares barlow to convert it to a 2" 19mm eyepiece. The barlow actually cleans up the EOF very well by turning the F5 scope into an F8 light cone.
Clear skies
John B
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