Hmmm, the pixel size seems slightly large even at f/6.3. Someone posted a
little CCD tool either here or in APML and according to it, a 12" f/6.3
scope combined with a 20 micron pixel size yields a scale of 2.15 arcseconds
per pixel. Whether this represents a sufficient number of pixels in terms
of oversampling is the big question.

Mike
http://www.concentric.net/~richmann/


> -----Original Message-----
> Sent: Friday, December 03, 1999 2:52 PM
> Subject: [M]: ST-9E for 12"LX200
>
>
> Hi,
> Considering purchasing a CCD for my 12" LX200.
> In doing so I have to match pixel size to the focal length
> of my telescope.
> The new ST-9E has 20x20micron pixels which maybe more suited
> at f10 than say
> 9 micron pixels (without binning).
> Would using a f6.3 focal reducer (75 inch focal length
> system) with 20mu
> pixels be acceptable with average seeing. A focal reducer at
> f3.3 would need
> a smaller pixel camera - is this correct?
>
>
> Thanks
> Dave Curtis
> Dunedin, New Zealand
>
>

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