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Re: (meteorobs) Need Film / Exposure Recommendation
Subject: Re: (meteorobs) Need Film / Exposure Recommendation
> In a message dated 11/15/01 9:55:50 PM Mountain Standard Time,
> chris.tarr@attdot net writes:
>
> I've always used 400ASA Chris But you might try 800 with the smaller
> aperture. anything over that will probably be pretty grainy i would
think.
> I havent piggy backed, but get the star trails let us know how you make
out.
>
> << Okay I am thoroughly confused. I have seen recommendations
> ranging from 200 - 3200 ISO film for meteor photography.
> I am a novice at this, but want to try a few piggyback
> photos with my SLR and Meade SCT this weekend.
>
> 28 mm at f3.5 is my widest most open setup.
>
You will probably capture more meteors using a standard 50 mm lens
rather than your 28 mm wide angle. I know that a wide angle lens seems the
way to go but the aperture of the lens is more important than the wide field
coverage. Our 180 degree Sandia All-sky camera will only record meteors
brighter than -2.5 - -3.0 magnitude where a 35mm camera with a 50mm standard
lens will record +1.0 meteors. Also the image scale is larger so the
recorded meteors will look nicer. I use Tri-X 400 ASA film as a standard
for spectroscopy.
Clear skies:
Ed Majden.
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