They do perform and have an avid fan base. At the high end I prefer machined knife edge baffles to sandpaper, but that's just me. There are two in my club and they do what an apo oughta. Greg N
I indeed was happy with my TV85 but just got to the point I wanted something larger. The TV 101 was just to expensive and a little to short on focal length. All I knew about the Vixen ED103 I bought was that it had ED glass. I found out it uses FPL 53 because there was a Vixen catalog packed in the box with the scope that stated that the ED81, 103, and 115 were FPL53. Since I remember Vixens in the past had either the word Fluorite or letters ED in large print on the tube I thought it strange that they now were so discreet about it. Just the other day I saw photos of a brand of 102 that had the words synthetic fluorite etched on the front cell retaining ring. That is clearly an attempt to suggest that their scope is not just another ED scope in a sea of ED scopes. In the text they tell you it's FPL53. The refractor companies know that their target market believes the only way a refractor can be any good is if it uses fluorite, especially fluorite, or FPL 53. I have often wondered if when Takahashi dropped the TSA102 and replaced it with a fluorite doublet chose to use fluorite because it was that much better or they just knew it would sell better. I think it is safe to say that they wanted to introduce a less expensive 4" scope but would an FPL53 version have been perceived as a cheap Takahashi compared to a perception of them bringing back a legend.
Edited by Nippon, 23 June 2018 - 12:07 PM.