Re: [APML] Satellite avoidance in photos

[Roland Roberts <roland@astrofoto.org>]

>>>>> "Robert" == Robert Reeves <reeves10@swbell.net> writes:

    Robert> At f/4 you clearly need not worry about the mag 5.  I
    Robert> would suspect that mag 0.8 will not be a problem at f/4,
    Robert> but the nearly 0 mag one may leave a faint trail.  Nothing
    Robert> that Photoshop won't cure in a minute or so.

Hmmm.  I have a new (used) 50mm f/1.4 lens I want to shoot with and
will probably do shots at f/1.4, 2, 2.8, and 4 to see how much I have
to stop down to get sharp images.  It sounds like you think anything
fainter than mag 1 (at f/4) can be ignored.  So I'd need to go nearly
one mag fainter per f-stop which means at f/1.4 I have a lot to worry
about, about mag 3.5....

    Robert> I was at the Okie-Tex star party last October and that
    Robert> location has something worse than satellites... airplanes!
    Robert> Lots and lots of them.  That part of Oklahoma is the
    Robert> airline crossroads of the midwest.  There were three to
    Robert> six aircraft visible in the sky at all times.

Fortunately it's not quite that bad where I shoot; up until at least
midnight there is usually at least one visible and a hat trick will
work.  I once couldn't find my hat in the dark and had to frantically
yank off my (navy blue) jacket to cover the lens while a plane
passed.  My wife was quite amused :-)

roland
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