RE: [Leica] Get out the Leicas - Leonids tonight

["Phong" <phong@doan-ltd.com>]

You went to Syracuse ?

- - Phong


> -----Original Message-----
> From: owner-leica-users@mejac.palo-alto.ca.us
> [mailto:owner-leica-users@mejac.palo-alto.ca.us]On Behalf Of John Bohner
> Sent: Tuesday, November 19, 2002 11:45 PM
> To: leica-users@mejac.palo-alto.ca.us
> Subject: RE: [Leica] Get out the Leicas - Leonids tonight
> 
> 
> BDColen Wrote
> 
> >Don't you love that, Nathan? (The people taking flash photos of Halley's
> >comet). It's almost as hopelessly dumb as the people at stadium rock
> >concerts snapping away with their point and shoots with flash...Boy,
> >would I like a flash I could control with, say, 150 yard range...:-)
> 
> Actually ,you sort of can get 150 yards out of your strobe.
> Long ago and in a jurisdiction far from here, two Physics majors at a large
> US university,  with time and equipment on their hands did an odd optics
> project.  They thought it would be interesting to see what kind of
> projected pattern one would get by firing a strobe out backwards optically,
> from the focal point of an 8 inch diameter Schmidt-Cassegrain telescope.
> Answer, a pretty bright spot at even a 1/4 mile.  Next they put said
> contraption on a hill top dormitory roof, at night, and randomly
> illuminated campus police sitting in their cars around the campus. They
> campus police would dash off, lights ablaze and then stop to regroup. It
> was a bit like using a laser point to play with a cat except the cat is
> usually smarter. Great fun but the physics majors sobered up and went to
> bed.  
> 
> So one could buy two  APO-TELYT-R  f/5.6/800 mm lenses, mount them in
> parallel, put an R9 on one and the strobe behind the other.  The rest is
> left as an exercise for a well-to-do student.
> 
> John B 
> Suos Cultores Scientia Coronat
> 
> 
> 
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