Re: [ATM] Aplanatic Schmidt-Cassegrains with aspherical mirrors

[Dominic-Luc Webb <dlwebb@canit.se>]

On Wed, 12 Jan 2005, matt wrote:

> There is no need for curved CCD chips.
> Technology exists, based on coherent fiberoptic plates ,that allows such
> curvature to be easily corrected . This technology is used for image
> intensifier tubes , scientific CCD , etc.
> True, it is expensive , but such devices can be had surplus for pocket
> change. Here's one:
> http://www.surplusshed.com/pages/item/l3172.html
>
> best regards,
> matt tudor

Nice, and I have seen such things, including hollow core
nanofibers. However, the ones I have seen were not able to carry all the
wavelengths the camera was able to detect, which makes them limited for
UBVRI measurements, etc. Maybe you know of some that are not so limited in
transmission range?

Dominic-Luc Webb

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