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Re: [APML] Planets on provia 400f
Hi Bert,
Some really nice results there! Great to see this film works out so well for
planets. I tried 400F on Jupiter and Saturn a couple of times just after New
Year's, but the seeing wouldn't cooperate ;o(
I was also shooting the 400F around f/70 with my 12"SCT for about the same
exposure lengths as you used. So far though, my best planet shots were taken
on a night of great seeing in early January of last year, on Provia 100F at
f/50. Exposures were a bit longer, but the combination of good seeing and
very fine grain more than made up for the smaller image scale of f/50.
As for planet image software, Jeff Ball's suggestion of AstroStack is a good
one; I recently downloaded it (it's freeware) at:
http://utopia.ision.nl/users/rjstek/english/software/index.htm
A couple of days ago I did find that AstroStack can work on planet film
images if they are saved in bitmap format and a compatible pixel dimensional
frame (I used 640 x 480). The automatic mode works very well, except it
occasionally was saving the result as grayscale instead of color ;o(
MaxIm DL also has an effective stacking procedure that works fine in manual
mode for planets. It's unsharp masking feature works very well for planet
film images, and I even had some limited success with deconvolution of 3 to
4 stack results. And MaxIm is also great for doing a realignment of RGB
channels that are split up by atmospheric refraction, for those times when
you can't shoot the planets really high in the sky. I also use MaxIm DL for
additional processing of my 100F planetary nebula photos.
I may have taken my last film images of planets though. The last few nights
I've been playing with a webcam for imaging Jupiter and Saturn, although all
of my efforts so far have been through heavy haze and fog <g>.
John Boudreau
jeboud@mediaone.net
http://people.ne.mediaone.net/jeboud/astro.htm
----- Original Message -----
From: Bert Katzung <katzung1@attbi.com>
To: APML <astro-photo@seds.org>
Sent: Saturday, January 26, 2002 2:38 PM
Subject: [APML] Planets on provia 400f
> Hi List:
> I haven't had a chance to image much lately, but a couple of nice nights
> tempted me into trying Provia 400F on Jupiter and Saturn. (Don't tell
Kodak
> <G>)
> http://www.astronomy-images.com/images/Solarsystem/planets.htm
> (Click on the two top thumbnails listed as "2002" images)
> Resolution leaves something to be desired but this film has nice color
> rendition on these bright objects.
> Bert
>
> Bert Katzung
> katzung1@attbi.com
> www.astronomy-images.com
>
>
>
>
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