Archived posting to the Leica Users Group, 1997/03/14

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Subject: RE: Astrophotography
From: db <boise@compuserve.com>
Date: Fri, 14 Mar 1997 21:01:19 -0500

>>I took some pictures of the comet a few days ago with my M6 and 90/2.8
mounted on a stationary tripod. The comet fills the 90mm frame quite
nicely and I took a roll of Fuji Super G 800 with exposures from 10
seconds to 1 minute, all wide open at f2.8. I just got my negatives back
and the results are rather disappointing. Stars start to trail for all
exposures longer than 15 seconds and the negative is too thin for the
exposures below 15 seconds. The proper exposure is in the neighborhood
of 40 - 60 seconds.<<

Use a 35 or 50mm lens instead of the 90 and use it wide open.  A 35 will
allow exposures of 30 to 45 seconds without significant trailing.  A 50
will allow about 30 seconds.  With Fuji 800 this should be plenty long to
get a good exposure.  Be sure to shoot from a dark sky site.

Don