Re: [APML] 1805 Redo with Mike's technique

["Robert Gendler" <robgendler@worldnet.att.net>]

Philip,
Yes it is an expensive way to get widefield shots
but the only way for me with mag 4.5 skies. I really
like your shot and it certainly covers much more sky.
Rob Gendler
Email: robgendler@att.net
Web site: http://robgendler.astrodigitals.com

----- Original Message -----
From: "Philip Perkins" <philip@astrocruise.com>
To: <astro-photo@seds.org>
Sent: Monday, October 15, 2001 6:50 PM
Subject: Re: [APML] 1805 Redo with Mike's technique


> I reference the following 35mm image only as an interesting counterpoint
to
> Rob's fine and wonderful image in terms of detector size; because it was
> produced using exactly the same make and model of lens that Rob
> used.  You'll notice that even after plonking down your $8,500 (including
> CFW-8) that you are still left with half of the detector size of your $250
> Nikon F2.  Detector size might be significant for the folks who enjoy
large
> wall mounted prints  (although it looks pretty crummy on screen this image
> in fact makes a rather nice 16x20" Lightjet print - the rather excessive
> contrast is nicely muted in the Lightjet print).  This 3 year old image
> suffers from various other defects, not to mention the notoriously poor
> Kodak OIII response (causing Ha regions to appear orangey-red) and the
blue
> flaring on some stars cause by the lack of chromatic perfect-ness across
> the spectrum.  Other defects are that it has excessive processing, and
that
> it has lost a lot of detail through being reduced from its 3800 x 2500
> original to fit the average computer monitor (though that sort of
reduction
> is completely normal for film):
>
> http://www.astrocruise.com/ic1805.htm
>
> --Philip
> -------
>
>
> >Hi all,
> >I've used Mike's technique to redo my recent IC1805.
> >As Mike did with his recent image I added the H-alpha luminance
> >at 50%. The results were dramatically different. There is slight
> >tradeoff in that by reducing the HA some of the detail is gone
> >but the color is hugely improved. Its a large image so please
> >be patient. Comments welcome.
> >http://robgendler.astrodigitals.com/1805.html
> >Rob Gendler
> >Email: robgendler@att.net
> >Web site: http://robgendler.astrodigitals.com
> >
> >
> >
> >--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
> >              Unsubscribe at <majordomo@seds.org>
>
> Philip Perkins - philip@astrocruise.com
> Wiltshire UK & Luberon France
> Astrocruise - http://www.astrocruise.com
>
>
> --  APML Archives at <http://astro.umsystem.edu/apml/>  ---
>              Unsubscribe at <majordomo@seds.org>
>


--  APML Archives at <http://astro.umsystem.edu/apml/>  ---
             Unsubscribe at <majordomo@seds.org>