Quote:
Originally Posted by gregbradley
Is that optically possible or is that another WO marketing hype claim?
I know the Astrophysics 155TCC is a reducer and I think its a fairly flat field although I have not tested it in CCD Inspector. Usually they are 2 different accessories.
I suspect marketing BS especially from WO who had no qualms claiming fluorite lenses when they were ED glass (which has a lot of fluorite in it).
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Tak, ASA, TeleVue, and other brands that I think you'd consider reputable also sell combined reducer/flatteners. Even AP's CCDT67 and 27TVPH both have a (slight) flattening effect.
WO also sells a non-reducing flattener for the FLT-132, the PFLAT-68.