"Sabrina Kilian" <"ykgp at vtSPAM.edu"> wrote in message 
news:46d429c3$1@news.povray.org...
> Brian Elliott wrote:
>>
>> And for any exposure longer than a few seconds, I'd need a tracking
>> mount. 1 degree Earth rotation per every four minutes -- bah.
>>
>
> http://strobist.blogspot.com/2006/09/on-assignment-how-to-light-comet.html
>
> They have some nice guides to cheap camera tricks. I think they left out
> the required distance from the center of the screw to the center of the
> hinge, 11 and 7/16 inches, but it's there in the comments some place.

Sabrina, thanks!  Even with my limited ability, I should be able to put 
together a barn-door mount.

Brian

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