Re: Astro CCDs still dragging their pixel feet

On Wed, 13 Apr 2005 21:24:16 GMT, "David Nakamoto"
<res07oeg@xxxxxxxxxxx> wrote:

>It seems to me that the questioner, no matter what his open or hidden intentions
>were, is operating under the paradigm that if the heart of the technology is
>similar (CCDs, film, et al), then what applies to one particular use should
>apply to another.
>
>Given that technology even in the film era of Astronomy got somewhat complex,
>leaving a lot of laymen clueless as to why certain things were done the way they
>were, digital imaging should be a bit worse.
"Hidden intentions?" Blah, blah, blah.
GO ask professionals WHY they use
hundred-megapixel cameras composed of banks
of large CCDs. I think the CFH scope has a 340 MEG CCD
array they used. They are TRYING to duplicate the
resolution of film plates while gaining the photon
efficiency of CCDs. When was the last time you saw
ANY observatory working in the visible spectrum using
a 250,000 element CCD except maybe for planets???
The people who used to shoot medium format film
in astrographs would benefit from a large, multi-pixel
CCD.
-Rich
.

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