Re: ATM Aero Xenon Lens

[Del Stanton <sd20@earthlink.net>]

While you have two wonderful things I don't think they
are well suited to working together.  But your lens
will make a superb photographic astrograph.....  A
number of the 7" focal length f/2.5 Aero Extars have
been used that way.  But with the 13.8 inch focal
length and your surely quite small CCD I think you have
a poor match.  Cobble up some sort of a setup and test
it terrestrially - making both daylight and night shots
of distance objects.  (Though thermal air currents may
present getting a good result - view the objects you
are photographing with binoculars or a low power
telescope to see if you have a good mirage free path.)

Del Stanton  sd20@earthlink.net

Rory Blake wrote:
> 
> I've enjoyed "the science" of the ATM for quite some time. But, just
> never got around to doing any work on my own.    However, I just got
> ahold of a mint condition 1930's Schneider Aero-Xenon 1:2.5 f=35cm
> lens.  The thing is huge, over 60 lbs.
> I remember seeing a posting (somewhere) of using an Aero-Ektar lens in
> Astrophotography.  I also happen to have a 3.3 meg CCD camera laying
> around.  Any advice from the group on combining the two? Any leads?
> Thanks.
> Rory Blake