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@REPLYADDR Alan Browne <bitbucket@blackhole.com>
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On 2023-09-23 19:14, RichA wrote:
 > May also be good for astrophotographers, but I`d need to see
100% images to be sure. Price is right and considerably less than Borg,
William Optics (which I suggested to them 20 years ago) and Omegon
offerings of similar type.
> 
https://petapixel.com/2023/09/22/ttartisans-new-500mm-f-6-3-full-frame-mirrorles
s-lens-is-just-329/

Not sure how one gets to "Large Aperture" claims with an f/6.3 lens...

-- 
"Markets can remain irrational longer than your can remain solvent."
- John Maynard Keynes.

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