Re: [APML] Astrograph lenses??

[George Anderson <georgea@cam.org>]

Hi Brian

You may want to consider dropping a few more dollars on other bits and
pieces to end up with a medium format Ha camera.
Surplus Shed has 4" #25 kodak glass filters for a cheap price
The local flea markets should turn up a couple of old 120 viewfinders
with bellows for minimum cost. Film creep might be a problem.
The expensive part will be the hypering setup...
This is one of many deluded ideas brewing in the back of my head for
toys/experiments in AP for the  budget minded.

George Anderson
Montreal Canada

Clear skies and good health


Brian Larmay wrote:
> 
> Thanks John, Dean, and Joseph for the info...
> 
> Its been about two weeks since I stopped there last, but im sure they still
> have them.
> I remember picking them up not knowing exactly what they were and wondered
> if I could make something out of them.
> Im going to stop over there tomorrow to write down some #'s and brands and
> see what you guys have to say about it.
> 
> My curiosity and the D.I.Y in me makes me too curious...theres gotta be a
> way to make something like that work for me.
> 
> Again,
> Thanks
> 
> Freeze this moment
> A little bit longer
> Make each sensation
> A little bit stronger
> 
> Make each impression
> A little bit stronger
> Freeze this moment
> A little bit longer
> 
> My photography:
> http://www.astrobri.com
> 
> ----- Original Message -----
> From: "John C. Mirtle" <jmirtle@shaw.ca>
> To: <astro-photo@seds.org>
> Sent: Tuesday, December 17, 2002 10:51 PM
> Subject: Re: [APML] Astrograph lenses??
> 
> > Brian;
> >     Been there, done that and then found out later that my Aero Ektar was
> > "slightly" radioactive. I wanted to build a medium field hi-rez tech
> > pan/H-alpha system but the 7" f2.5 did not focus to a very sharp image in
> > the red. I understand (now) that they were optimized for night time flash
> > photography. (blue) If you use 4x5 sheet tech pan, then they would
> probably
> > give great images as you wouldn't need to enlarge much. You might be
> better
> > off with a blue filter and Tri-X or T-Max sheet film. I eventually
> switched
> > to my Olympus/Zuiko 180mm f2.8 which - when filtered - blew the Aero Ektar
> > out of the water for star images. It was also much easier to mount! I
> don't
> > know that much about other astrograph or ex-military lenses, I promptly
> lost
> > interest in them.
> >     Thanks Jim and Brian, for the vote of confidence on the H-alpha shots!
> > The scans are nothing - you should see the 16 x 20 prints! When I get some
> > time I will post some other Ha images on my site.
> >
> > John Mirtle
> > Calgary, Ab. Canada
> > http://members.shaw.ca/jmirtle/ha.htm
> >
> > ----- Original Message -----
> > From: "Brian Larmay" <astrobri@ameritech.net>
> > To: <astro-photo@seds.org>
> > Sent: Tuesday, December 17, 2002 9:17 PM
> > Subject: [APML] Astrograph lenses??
> >
> >
> > I was looking at astrographs on astromart and seen these suposed
> astrograph
> > lenses: http://www.astromart.com/classifieds.asp?c=2
> > Are these indeed useful to make an astrograph?
> > If so, I have an american science and surplus store here that sells these
> > things for like 5 bucks and Id say there are about 30 of them just sitting
> > there in a pile.
> >
> > How do you make an astrograph out of one of these things?
> >
> > Brian
> >
> >
> >
> >
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