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[OM] astro matte screen

Subject: [OM] astro matte screen
From: Peter Leyssens <Peter.Leyssens@xxxxxxxxx>
Date: Thu, 11 Jun 1998 18:07:48 +0200
Hi,

I'm catching up with my e-mails after my trip to Japan and I found this
message :

>In anybody's humble opinion, what is the best screen to use for astro-
>photography.  I can't see a thing through my 1-4.

In the days I did astrophotography, I did the following.  I have to
admit it sounds amateuristic and it will not work if your lens doesn't
stop exactly at infinity.  Proceed at your own risk :

Remove your matte screen and use your camera like that.  Store the matte
screen safely !  It fits quite nicely into a plastic box of a roll of
film (the most polyvalent piece of packing I've ever seen !).  If you
work this way, your camera doubles as a nice small telescope.  E.g. with
a 300mm you can fit in the Pleiads and have a *great* view.  Do note
that you'll have a round image !

I think for most Zuiko lenses it would work OK if you stop down 2 stops
from the maximum aperture.  You would get crisp images this way, even
though you didn't quite focus.

I never really took pictures like this (and the ones I took were ruined
by horrible development & even worse printing in the most terrible dark
room I ever saw : they didn't even have a thermometer !).  But it was
great for viewing.


--
Peter Leyssens
Eonic Systems

Personal e-mail : Peter.Leyssens@xxxxxxxxx
Support mail : support@xxxxxxxxx


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