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[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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