[JJDOBBER79 (Jas)]

good point about the barlow effectively halving your FOV. I have never noticed this before. I have been viewing jupiter recently with my xw10 and 2x TV barlow (300x) and like I said pretty good viewing most of the time. For example observed a quite clear transit and red spot last night. But it does move through the FOV quite quickly. So, this actually is a significant disadvantage to using a barlow that I never considered before. I guess the large FOV is one of the main reasons one spends big bucks on a premium ep. For example, a major deciding factor for most people to purchase say.. an ethos... would be the 100 degrees FOV. Does that mean that if you barlow one of these you will only get 50 degrees. I better go and buy the whole ethos range ASAP....