writes:
>Check out:
>http://www.isomedia.com/homes/cvedeler/M45t.jpg
>
>This is a 2700 dpi detailed scan (seriously cropped) of the M45 shot
>on my
>webpage. This was a 45 minute exposure with my 10" LX200 using a GEG
>for it's
>focal reduction (f/6.5) but using my guidescope to guide. The mirror
>cell was
>locked down and everything else went right. This is what I am talking
>about as
>far as 45 minutes being the upper limit of exposure time when I use my
>guide
>scope.

I looked at the pic and your web site and need to ask what type of
guide scope did you use, the 60mm or 80mm S-80 ???? Both of these
scopes have excessive flexure in the focus mechanism and would not
recomment them for guiding, even seen problems with the ETX which
probable is mirror flex.

****************************************************
ric ecker
san marcos, ca.
curator of the Willard Observatory
http://members.aol.com/rlecker/optas.html...........Pictor 216 XT images

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