Re: [APML] Convex security mirror + aurora

["jmize" <jmize@svic.net>]

Brian;

     Depending upon how expensive the 18" convex mirror is you could 
experiment with a Garden Gazing Ball or a polished and chromed Moon hubcap. 
Same principal, possibly a more cost saving experiment...joe  :)

"May You Go Among The Imperishable Stars"

Joe Mize:     jmize@svic.net
StarFields Observatory   http://www.cav-sfo.com
Chiefland, FL    29:24'33.4"N    82:51'37.7"W
Moon Phase:     http://tycho.usno.navy.mil/cgi-bin/phase.gif
----- Original Message ----- 
From: "Ray Rochelle" <r.rochelle@sbcglobal.net>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Friday, May 20, 2005 8:41 PM
Subject: Re: [APML] Convex security mirror + aurora


Brian,
I am sorry I do not have the actual information for you. This was done by a 
guy in Arizona I believe several years ago on SEDS. I am sure you can find 
the info. It seems he mounted the camera over the mirror and looked straight 
down with a 135mm film camera lens. It was ok I did it with a truck mirror 
and the results were not great but doable.
I am sure you can come up with something.
Brian the exposure times can be greater due to the curvature of the mirror 
have the effect of less problems with the movement of the earth.
Ray Rochelle


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