Re: [APML] Need for a 300 mm "CCD scope"; was: (OT) IC1396 CCD with Schmidt-like FOV

[lkt <tan@cox.net>]

Now what would be very cool would be a very small Newtonian type design.
Maybe a 2" aperture f/3 instrument (150mm FL). The central obstruction
might be 1". Sure this is 50% but the resolution per pixel would be poor
anyway. I wonder if a 1" secondary might fully illuminate the KAF3200.
This would have a carbon fiber tube and Sitall optics for temp.
insensitivity. It would fit in the palm of your hand. I do not know if
it's possible. 

Loke


Gene Horr wrote:
> 
> Bert Katzung wrote:
> 
> > Thanks for the input---that Tak scope and its price are a very useful
> > yardstick! Is that no longer available?
> 
> No, they stopped 3 or 4 years ago.  There wasn't enough demand (hmmm.
> A bad datum....) much of this may have been due to the lack of back
> focus, though.  You couldn't use a diagonal hence it was a poor choice
> for a visual instrument.  One heck of a little pocket astrograph, though.
> 
> Gene Horr
> genehorr@texas.net
> 
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