Re: [APML] Comet Size on Film

["Bert Katzung" <katzung1@attbi.com>]

Hi David:
Do you have your shots posted anywhere? This was 135 mm focal length on 35
mm film? My first try,
http://www.astronomy-images.com/images/comets/Ikeya-Zhang.htm ,
was with my 780 mm focal length scope on 35 mm film (2.6 deg FOV) and that
appears to be too long a focal length, but not by much. Last Friday, I shot
it at 585 mm but I don't have the results back yet. I would think the 3.4
degree FOV should be plenty.
Bert

Bert Katzung
katzung1@attbi.com
www.astronomy-images.com

----- Original Message -----
From: <David.Moore@Contech.SPX.com>
To: <astro-photo@seds.org>
Sent: Sunday, March 17, 2002 10:27 AM
Subject: [APML] Comet Size on Film


>
> I got to shoot the comet for the first time last night from here in
> Southwest Michigan.  I shot it with Fuji 800 speed film with 2-5 minute
> exposures.  Because I did not know how long the tail would be on film, I
> used my 135mm f/2.5 lens.  After reviewing the negatives today, I would
> like to let everyone know that a much better focal length would have been
> 300mm, with the comet oriented along the long axis of the film.  I am
> pleased with my overall results, but I hope to get a chance for the longer
> focal length.  Good luck to the rest of you!
> David Moore
> david.moore@contech.spx.com
>
>
>
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