RE: [APML] First attempt Tech Pan/Color composite (HELP!)

["Scott Hammonds" <shammonds@creatorsview.com>]

Renzo, Stuart, Chris,
Thanks for the feedback. It's amazing how much the tech pan adds to the
shot.

Stuart, The images were registered in RegiStar, but after splitting the
channels for combining them it seemed difficult to get them back together
exactly right. I guess it's just trial and error until I figure this thing
out.

Chris, I gave the L'ab method a try according to Jerry's book and will try
to get it posted as a comparison to the others when I have more time. Thanks
for the observations. 

Not sure how much of this I'll get to do considering my film is now all
expired by at least 6 months and tech pan is going going ...  


Scott Hammonds
www.creatorsview.com

-----Original Message-----
From: Stuart Heggie [mailto:stuart.j.heggie@sympatico.ca] 
Sent: Thursday, November 25, 2004 6:04 AM
To: Discussion of Film Astrophotography
Subject: Re: [APML] First attempt Tech Pan/Color composite (HELP!)

Scott, I like them both but if I had to choose, I'd choose the second one.
Seems a little sharper.
Also, the colours seem a little less intense in the second and I like that
too.

I am not sure I understand how you registered the images. If you did this in
PS then my guess is that the two different emulsions (they are on different
thickness bases too) are not exactly to scale and so you may have slight
misalignment of stars. If you registered in Registar or something that will
stretch each image to make sure all stars align, well then I have no idea.
In any case, it is very slight and maybe I'm imagining it.

Stuart
----- Original Message -----
From: "Scott Hammonds" <shammonds@creatorsview.com>
To: "'Discussion of Film Astrophotography'" <astro-photo@seds.org>
Sent: Wednesday, November 24, 2004 10:51 PM
Subject: [APML] First attempt Tech Pan/Color composite (HELP!)


> Hey Tech Pan users, and you to Rob Gendler, or anyone else who wants 
> to comment, I have just completed my first attempt at combining a 
> filtered Tech Pan shot and stack of 2 color shots. I tried two 
> different techniques for this first attempt and would really like some 
> feedback.
>
> I used Rob Gendler's technique and one of the techniques described in 
> Jerry's book. I registered the Tech Pan image to the stack of 2 RG200 
> shots and then combined them in PS as described. I found it difficult 
> to get them to match exactly, is that a common problem working with 
> two different types of film, or with a filtered shot? Both were taken 
> using the same lens. It appears the second image on the page looks 
> sharper and aligned better. I'm sure I did something wrong, wouldn't be
the first time.
>
> http://www.creatorsview.com/ngc7000hargb.html
>
> Comments, criticism's and observations. It might be late tomorrow 
> before I can respond due to work. I had to do this on my laptop in a 
> hotel room so please be gentle. <g>
>
> Happy Thanksgiving!
>
> Thanks,
> Scott Hammonds
> www.creatorsview.com
>
>
> _______________________________________________
> Astro-Photo mailing list
> Astro-Photo@seds.org
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