Re: [APML] (OT) IC1396 CCD with Schmidt-like FOV

[lkt <tan@cox.net>]

Roland,

 I think this could be large because there are no products with focal
lengths in the 100-200mm category which satisfy the color correction
requirements for CCD astro-imaging. It should also be fast preferable no
slower than f/3. The market would be everyone who wants to do widefield
CCD imaging (presuming they can deal with the bright stars or avoid
regions with bright stars). One question I have is, how difficult is
such a lens to design and make. Is it even reasonably possible? I know
the APO refractors are more challenging as the aperture grows i.e. they
have to be slower. 

Loke


---------------------------
In a message dated 8/6/2002 10:07:53 AM Central Daylight Time,
swalker@SkyandTelescope.com writes:


   Sounds like there's a nice market for 300mm astronomical quality
lenses
   for CCDing, Roland ;-)



What kind of market would there be?

Roland Christen

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