Quote:
Originally Posted by LewisM
You may rethink those choice of words if you ever own or seriously use a Tak Glen. Just sayin'...
WO71 doublet - wouldn't go near one again. TERRIBLE CA and astigmatism. Very hard to balance it on a mount.
The tak FS-60 is my least favourite Tak ever made, but many love them. Still, it is a better scope than the old WO 71 and the ED80.
I would have gladly traded my Esprit 80 for the MT160, until I kept reading of the woes and modifications done by a prior owner/seller... 
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Always worth reading the original post before bashing the competition, Lewis
The Star 71 is a quadruplet, no CA, 45mm flat field.
This is NOT the same as the WO Zenithstar 71, cheap doublet, which has plenty of CA...it's actually fine for visual, you just get blue halos when imaging.