Re: Newbie with questions

[P3D John W Roberts <roberts@xxxxxxxxxxxxxxxxx>]

>Date: Tue, 11 Mar 1997 10:39:40 -0600
>From: P3D Paul Albers <PAlbers@xxxxxxxxxxx>
>Subject: Re: Newbie with questions

>P3D' wrote:'
>> 
>> For aerial photos, a beamsplitter won't work even if it weighs very little.
>> You need a greater base separation.  Use a timer for a 1-5 second delay.
>> You figure out how to wind the film & shutter ...

>Well, rockets will always be moving upwards or downwards at any point (and
>much faster when in the upwards direction) so photos taken at differnt
>times will be at different altitudes, and the rocket may be rotating
>as well so any delay between shots would be unlikely to produce usable
>3D frames.  Having a rocket over 15 feet tall is normal for high power 
>rocketry, but not modle rocketry so I guess it's not possible. (If
>I am wrong, please tell me.)  What would be the effect of using too
>small of a base separation?  Would the photos just be too much the same
>to produce a 3D effect?

Not so fast! You could have the rocket eject two 2D cameras, which hang
down from their own parachutes (thus pointing straight down), take circular
photos, and are timed to photograph a certain time after going to zero-G
(for instance). You could put a spring in to push the cameras apart, or
just rely on turbulence of the air to get the proper separation on some
of the launches.

John R


------------------------------

End of PHOTO-3D Digest 1927
***************************
***************************
 Trouble? Send e-mail to 
 wier@xxxxxxxxxxxxxxx 
 To unsubscribe select one of the following,
 place it in the BODY of a message and send it to:
 listserv@xxxxxxxxxxxxxxx 
   unsubscribe photo-3d
   unsubscribe sell-3d
   unsubscribe mc68hc11
   unsubscribe overland-trails
   unsubscribe icom
 ***************************