|
The 17mm is good on a SCT @F10 but the seeing has to be pretty good to use the 10mm (I do not own the 13mm). I would say they will not work well on an F15 scope (ETX 125). The 6,8,10 and 13 have 1.25" barrels and these will not be suitable at that focal length unless you are living on top of a mountain in Chile (13 mm being the unknown). The 17mm have 2" barrels and these wont fit into the ETX unless you have the SCT adaptor and a 2" diagonal. Try some of the Pentex XW series, these work well in all my scopes ETX included.
Mark
|