Re: [APML] Interesting...Supra 400

["westergren" <westergren@netzero.net>]

Don S,

It's the filter that's shifting the color.  We need to get together soon and
I will show you what Supra 400 can really do.  When I tried the Lumicon Deep
Sky filter on galaxies, I got a LOT of that purple shift.

Don W


> Hi all,
>         Last week, I took 3 20 minute photos of M51, combined them,
> processed them, then determined that they were not very impressive.
> http://members.cox.net/ecdon/M51.html
> I had a heck of a time trying to process this image to get color correct.
As
> you can see, I failed.
> I came across this site today http://www.darkskyimages.com/films.htm and
at
> the bottom of the page, the author noted low recording power and a purple
> cast in the Supra 400. His M13 is also simular to mine. Am I reading this
> correctly in that Supra 400 is not very good for galaxies and globular
> clusters? I know that part of my problem is where I'm shooting from and
> using a deepsky filter, but this concerned my a little, as I just up'd my
> stock by 20 and now have 35 rolls of supra.
> Thanks,
> Don Spencer
>
>
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