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[APML]: Aerial lenses adv, Schmidt cameras




Peter Ceravolo wrote:
> 
> 
> >> Has any one played with aerial lenses much for astrophotography? I am
> >> thinking of lenses other than the old Extar "can't focus the blue to save
> >> your life" surplus jobs. The more modern 300mm f/4 Hycon and other such
> >> lenses that have popped up in the surplus market.
> >>
> >> PeterI have heard of friends using this kind of lenses as astrographs, some
> >of them were 8" size, but all of them were out performed by equal size
> >cheaper Schmidt cameras.
> 
> Alfredo,
> 
> Did your friends use the lenses with 35mm film or did they try it with
> larger formats? I should have mentioned that I am interested in playing with
> large format film so you can still get a wide field but at a larger image scale.
> 
> But clearly the Schmidt would kill the average lens. However the lenses I am
> refering to can usually be had for less than $200 or so on the surplus
> market, far cheaper than a Schmidt.
> 
> PeterYou are right, but in italy those surplus costed a lot more and required
much work due to their weight to assemble them in a tube, without
considering the camera attachment (usually a 4X5).
If you can get an 8 inches lens for 200 $ it is worth while!
A friend of mine sold recently a  self made (but good) 8" SC for the
equivalent of 600 $.
Markets are very different in our two countries, sorry if I have wrongly
-- judged your suggestion!
Alfredo

--
Regards, Alfredo Zanazzo ( alferd@mbox.lol.it )

Professional home pages:   http://www.lol.it/aziende/music/zanazzo
Astronomy home pages: (Off/axis guider-camera project): 
http://www.lol.it/~alferd
Concentric Schmidt Cassegrain photos: 
http://www.lol.it/~alferd/astropag.htm