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Old December 17th 05, 05:51 PM posted to sci.astro.amateur
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Default 6-Inch Jaegers Objective Lens on Ebay

On Fri, 16 Dec 2005 19:51:11 -0600, Pete Rasmussen
wrote:

On Thu, 15 Dec 2005 18:50:29 -0700, "Jan Owen"
wrote:

"David Sleeter" wrote in message
...

"Mean Mr Mustard" wrote in message
oups.com...
David Sleeter wrote:
http://cgi.ebay.com/ws/eBayISAPI.dll...tem=7573092651

... but I can get a 6" objective in cell from D&G optical for the same
price ... decisions, decisions ...

http://www.dgoptical.com/objective.htm

But it isn't a JAEGERS!


Given the choice between a Jaegers objective and a D&G objective of the
same aperture, for the same price, most folks *I* know would choose a D&G
EVERY time...

Yes, the Jaegers has a certain nostalgic connotation, but when it comes
down to optical quality between a D&G and a Jaegers, well... D&G all the
way...


Oh, I don't know about that. D&G does make great optics but
historically they have been VERY reluctant to tackle good, moderate or
faster f/ratio achromatic lenses where Jaeger's has not.

I and a few others have certainly heard/known of a few mixed quality
reviews of the speedier Jaeger's objectives (in the 6" class
particularly) but what I've seen of each of several various examples
in all f/ratios was that quality was exceptional in each case!

So, ha ha ha! ;-)


Honestly, quality matters little in a 6" f5 achromat. Residual SA
and horrific CA completely limit magnification so it is nothing but a
big rich field scope. You don't need superb quality for that task.
-Rich