Re: [APML] Comet Bradfield visits Greenbank Telescope

["Stuart Heggie" <stuart.j.heggie@sympatico.ca>]

Jeff - I like them both a lot but I must say the film shot is my
favourite and it is one of the best I've seen. Thanks!

Stuart
http://www3.sympatico.ca/stuart.j.heggie/Stuart.J.Heggie/
Flesherton, Ontario, Canada

----- Original Message -----
From: "Jeff Ball" <jeffball@astro-photography.com>
To: "'Discussion of Film Astrophotography'" <astro-photo@seds.org>
Sent: Friday, April 30, 2004 10:34 PM
Subject: [APML] Comet Bradfield visits Greenbank Telescope


> Hello all,
> This is my first run at processing the film image.  I have one other
not
> yet processed that might work.  The reason I say that is that I have
an
> apples and oranges comparison.  I shot both digital and film on this
> morning.  I normally do this on landscape to take advantage of the
> larger print size available with the medium format vs. the Canon 10D.
I
> use the digital to setup composition and exposure to minimize the
amount
> of bracketing needed with film.  The problem with the comparison is
that
> the film image is in much darker lighting conditions than the digital
> and therefore is more noisy.  To be honest, I went with the lighter
> digital image because I found it more appealing and I wasn't sure I
> could manage the noise very well.  I think I have one film image shot
in
> more twilight.  I really like the time where you get some warm
twilight
> with the comet just above the brightness with some contrast still
> available.  The window for this timing was very narrow and was what
gave
> digital the advantage in timing this moment of light.  I used Noise
> Ninja for the first time and I am sure I am not totally utilizing the
> power of the software.  I think most of the details are on the
webpages,
> but I basically shot at ISO 800 and 30 seconds per Chris Cook's
previous
> work.  The tail contrast is definitely better with the film.  It has
> been interesting to work with the data.  I will update if things
change
> dramatically.
> Here is the film image:
>
> http://www.astro-photography.com/comet_bradfield_film.htm
>
> Here is the digital
> http://www.astro-photography.com/comet_bradfield.htm
>
>
> Best regards,
> Jeff Ball
> www.astro-photography.com
>
>
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