Re: Hale-Bopp

[P3D Larry Berlin <lberlin@xxxxxxxxx>]

>Date: Wed, 14 May 1997 
>From: P3D Peter Homer writes:
>
>A little while ago as Hale-Bopp was still aproaching us there was some
>discussion on the possibilty of using its movement to get a stereo pair .
>...............
>..... He also photocopied mine and found he could play around with the
>pairs to elimminate the stars coming forward of the comet and felt that
>this was caused by "Twist" in my mounting although I had not  been able to
>do this when I originaly mounted them .
>  Can any other members of the group shed some light on this particularily
>the astronomers have other people had any success with stereos of
>Hale-Bopp. P.J.Homer
>


There was an anaglyphic image of Hale Bopp posted on the Internet. The
astronomers who took it used several hours of separation time between the
shots. They claimed to have *fixed* various problems with the image by
eliminating stars that didn't match up, but I found it very difficult to
view and it still had the *twist* problem you describe. I could fix it
considerably better, having fixed similar problems with hand held side step
stereo images, but haven't taken the time to do so. I suppose the best way
to get a stereo pair would be to carefully rotate the camera appropriately
between the exposures to compensate for the orbital rotations involved. It
still might require special adjustment afterwards.

I didn't think the images I saw on the internet were very good ones to begin
with, so if you guys have some better raw material to work with I would be
happy to *fix* it for best effect in exchange for being able to post the
results on my website with full credit to the photographer/s. Contact me
directly and send the best resolution image you currently have. Thanks.

Larry Berlin

Email: lberlin@xxxxxxxxx
http://www.sonic.net/~lberlin/
http://3dzine.simplenet.com/


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