FreeLists / az-observing / [AZ-Observing] Re: The Orion 120mm ED Refractor

[DBogan3220@xxxxxxx]

Orion claims they are using Ohara FPL 53 that is  the same glass 
Astro-Physics has been using for the last 10 to 12 years. Tak  uses the same 
glass. The 
only people using fluorite is Telescope Engineering  Company and the two models 
they sell using that stuff is really costly. Actually  when you get right down 
to it. Using FPL 53 and the correct mating elements such  as what AP uses for 
its triplets their is really no reason to use fluorite. At  least in the form 
that Takahashi was using years ago with its limited production  FC series 
which you can find on Astro-Mart from time to time. Tak claims they  were using 
Fluorite on their FS series but I think that was an advertising ploy  because 
of the cost of Fluorite they would never had been selling the FS scopes  for 
the prices they were.
 
Clear Skies
Dwight L Bogan
 
 
 
 
 
 
In a message dated 8/6/2006 7:43:44 P.M. Pacific Standard Time,  
Telescoper@xxxxxxx writes:
Yes,  just distinguishing using shorthand between Orion's ED glass and the  
exotic and expensively crafted fluorite and triplet Tak, Televue,  
Astrophysics 
and TMB brands, These are totally "APO", and they are better  both 
mechanically 
as well as optically. ("APO" has several definitions.)  I'm sure Orion will 
back off on the price after introduction, as they did  with the 100mm. 
Doesn't 
matter, I'll be buying on Astromart and not retail  anyway, sorry, telescope 
industry. You can get these better brands of  small refractors on Astromart 
for 
$2000 and under and with the  accessories, I've seen them.

Jack






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