Re: *fast* film/Hale Bopp

[P3D John Ohrt <johrt@xxxxxxx>]

P3D George Gioumousis wrote:
> I built a slide bar using only wood-working tools. Then I wrote
> it up to send to photo-3d, but I can't remember if I actually
> did send it. If no one remembers seeing it, I'll try to find
> it and get it out properly. It works pretty well.

Someone did just did, but I seem to have lost my copy :-)

 
> However, what really bothers me is the idea of getting a stereo
> picture of a comet using a slide bar. Astronomical objects are
> just too far away. I'm sticking to 2-D for Hale-Bopp.

The comet does move relative to the stars.  Right now around a full moon
is a tricky time to photograph because the reflected light from the moon
takes a large non-linear swing about the time of full moon.  But if you
wait say a few days to a week, you could try shooting the comet on
sucessive nights at about the same time (to match illumination
conditions).  Then you just have to line the stars up so they appear to
be at infinity.  The comet won't be :-).  As the moon wanes further, you
can cut this to a few hours on the same night to bracket the time span
(ie baseline) a little more.

Sorry I can't help further, my astronomy is conducted without any
automation or photography.  I just enjoy looking! The one exception is
meteor patrol work, of which I've done a little.  In one form, it is an
exciting 3d application.

Good luck,
John


--
John Ohrt,  Regina, SK, Canada
johrt@xxxxxxx


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