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Old October 29th 06, 05:35 PM posted to sci.astro.amateur
Sam Wormley
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Posts: 836
Default DLR in C5 prime focus: cannot get fully in-focus images

Joe Ringer wrote:
You wrote:

When attaching our new Canon 350D SLR to the prime focus
of our little C5, we cannot obtain the sharpness that the
camera viewfinder (SLR) shows us.
Even though using lock-mirror, 2-10 sec. (remote) self-timer
and exposure times of 50th of a second and faster,
images taken are way to blurry (daytime).
Goddammit. What are we doing wrong ?
Reg. Pete J.


Do you wear glasses, if so focus with them on.

Joe




C5s have very poor stability for astro-photography. Even the shutter
will vibrate the setup... get out the sandbags. Try leaving the shutter
open and using a black card to start and stop exposures... at least the
longer ones.