I have taken terrestrial pix thru my Celestron C-11 SCT. Overall, focus is
a bear and the contrast just isn't. Very flat. I mean **very**.
At f/8 or slower and dollars at an absolute premium, I'd consider a low
dollar third party offering from the likes of Sigma or Tamron or the old
Vivitars. They pop up used often enough. However, judging from the
excellence of the shots you've posted on your website, you are not going to
be satisfied with the lower image quality. Sad but true, speed is
expensive. Do you have a specific dollar range budgeted for this lens? I
think you'll do better with a 300-400 f5/.6 lens compared to a mirror-based
alternative.
Mike Butler <abutler@xxxxxxxxx> wrote and wondered:
> Hello fellow Zuikoholics,
> I realize this is a bit sacrilegious but bear with me, I have been on
> the look out for a 400mm or longer lens to take to the race track (I
> don't get a Press Pass).
.....
> Finally to my question, does anyone (maybe one of our Astro
> Photographers) have any experience using a Catadioptric telescope for
> terrestrial photos? How is the build quality, sharpness ect? Better
> than A Tamron 500mm F8 for example? TIA,
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