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Re: amazing new Semi-ED refractors

Started by dhilts, 06/23/2005 11:16AM
Posted 06/23/2005 11:16AM Opening Post
Nobody cried foul when Vixen introduced their NA series scopes. A neo-achromat? now what the heck is that? Just another round of marketing hype, a new name for an old concept.

So how come every one gets excited over the latest hype from China? It is what it is and it will fail or flourish based on what it delivers, not what it promises.

Now since these new Chinese scopes are Petzval designs or an variation of, could it be they actually use ED in the secondary element? Sort of a semi-ED scope since only half the objective has ED? Does anyone really know?

clear skies,
dan
Posted 06/23/2005 12:49PM #1
dan hilts said:

Nobody cried foul when Vixen introduced their NA series scopes. A neo-achromat? now what the heck is that? Just another round of marketing hype, a new name for an old concept.

So how come every one gets excited over the latest hype from China? It is what it is and it will fail or flourish based on what it delivers, not what it promises.

Now since these new Chinese scopes are Petzval designs or an variation of, could it be they actually use ED in the secondary element? Sort of a semi-ED scope since only half the objective has ED? Does anyone really know?

clear skies,
dan

Hi Dan.
Vixen's introduction of the name "neo-achromat" wasn't a big deal, since it was a new iteration (for them) of an achromatic design. Neo = new. Achromat = achromat.
Sure, it's a Petzval. Televue called theirs a Genesis. I'm shocked that Christians didn't march on Pearl River, back then!
wink

According to the vendor, there's no ED used in the "semi-ED" Antares refractors. So why call them that? It's a very dubious way of marketing telescopes.

Take care,



Clive.