Don't forget that that 1/60th of a second or so don't matter too much in a
60 second exposure...
Tom
At 16:25 1999/12/01 -0600, Jay Maynard wrote:
>On Wed, Dec 01, 1999 at 08:02:43PM +0000, sje@xxxxxxxxxxxxxxxxxx wrote:
>> GMA wrote:
>> >don't forget to again cover the scope with the hat before you release the
>> >shutter.
>> Surely this would't be necessary - any vibration caused by the shutter
>> closing would affect the telescope after the second curtain has closed.
>
>The acceleration of the second curtain starting to cross the film plane
>would induce some amount of shake, though I'm not sure how much. Using the
>hat would seem to be a reasonable thing to do.
>
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