Okay, thanks Jason.
----- Original Message -----
Sent: Tuesday, October 12, 2004 10:47
AM
Subject: RE: [APML] Film and OAG
Questions
Hi
Gary,
When I
guide I more often than not use averted vision to see the star and reticle at
the same time. If you can, try turning down the reticle brightness so it
doesn't wash out the star.
Cheers,
Jason
Hello,
I bought a roll of Fuji Superia 800 and was
shooting with it at a festival today. I didn't use all 36 exposures
and was wondering if this film is any good for astrophotography. I've
forgotten what it actually said on the film cannister itself, but on the
film tube it came in it reads--Fuji Superia CZ135-36 800 ISO. Just
wondering if it's worth my time to finish the roll under the stars or
not.
I have a Lumicon 2" Easy Guider and the
(Lumicon) recommended 3X Prism Diagonal. I guide with a 10mm
illuminated reticle. I'm using a 480mm f/6 80mm achromat.
My problem is not so much in finding a guidestar (although that is a
challenge at times), but having one bright enough that I can actually see
well enough to guide with, without having to use averted vision.
Is there a reason for using a prism instead of a star diagonal? I
realize having a 3X magnification is going to make the guiding easier and
more accurate, but would I get brighter guide stars by using a star diagonal
and 2X barlow? Would I be able to focus the guidestar with this
set-up? The sky here is socked in or I would try it out.
I'd appreciate any thoughts or knowledge anyone might bestow upon me.
Gary
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