Re: [APML] Possible Fake or Worse??

["Mike Unsold" <mike@mlunsold.com>]

The M31 image is certainly within the capability of the 10D. Actually an
averaged dark frame used with adaptive dark frame subtraction followed by a
sigma clipped or excluded min/max average combination would yield a very
smooth stacked image that could be aggressively stretched.

Here are some additional examples using the D60 and 1Ds. Exposure and
processing detail is available under each image.

http://www.mlunsold.com/examples/D60/D60-M31.html

http://www.mlunsold.com/examples/1DS/1Ds-M22.html

http://www.mlunsold.com/examples/D60/D60-NGC891.html

(click on the image for a larger version)
http://www.mlunsold.com/examples/1DS/1Ds-M27.html

Mike


----- Original Message -----
From: "Jerry Lodriguss" <jerry@astropix.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Monday, September 01, 2003 10:57 PM
Subject: Re: [APML] Possible Fake or Worse??


>
> I don't know why you would doubt the integrity of this photo, especially
> based on the outstanding quality of work that Stephen has produced
previously.
>
> Lots of people have shot long-exposure deep-sky shots with a Canon 10D,
D60
> and even the 1Ds, so there is nothing out of the ordinary about this photo
> being taken with that camera and a CMOS chip.
>
> See:
>
> http://www.ricksastro.com/Gallery/htm/10D.htm
>
> And:
>
> http://velatron.com/dca/gallery/
>
> And:
>
> http://www.mlunsold.com/ILExamples.html
>
> Jerry
>
>
> >Could this be true??
> >Mr. Pitt says this is his photo of M31 on a CMOS 10D Digital Camera???
> >I seem to recognize this photo?????!!!!!!
> >Any help with this from the group??
> >Ray Rochelle
> >
> >----- Original Message -----
> >From: "Stephen Pitt" <lthuedk@pe.net>
> >To: <digital_astro@yahoogroups.com>
> >Sent: Monday, September 01, 2003 2:38 PM
> >Subject: [digital_astro] Testing the Digital Waters
> >
> >
> > > This is my first image post using a digital anything,
> > >
> > > http://www.light-to-dark.com/m31_10D.html
> > >
> > > and I have found the 10D to be quite a challenge, with a fresh set of
> > > ideosyncrasies to deal with, like noise, uneven field colour
> > > temperature (possibly heat from the electronics), and vivid background
> > > colour pixellation.  The processing is at least as challenging as that
> > > of film and its easy understand the need for dedicated software that
> > > could make stacking and dark frame subtraction less labor intensive.
> > >
> > > Admittedly, I got the 10D hoping for a panacea, a short cut to quick
> > > imaging, but find such things as noise reduction-like SBGNR-more of a
> > > necessity than an occasional luxury.  But then, I'm not used to
> > > stacking more than 2 or 3 film images and ending up with smooth
pictures.
> > >
> > > Anyway, the chip is challenging.  I can't help but wondering about
> > > cooling effects on image quality.  Perhaps, when winter comes, the
> > > CMOS will be more image friendly, as ambients of 72-75 deg., such as
> > > those during the above acquisition seem to be quite noisy.
> > >
> > > All of this is to say, I have come to respect the work done by others
> > > using their digital cameras.  And, I have to ask: Would such programs
> > > like I.P. make more efficient use of time in processing the images
> > > than say, P.S. and RegiStar?
> > >
> > > Thanking you for a reply,
> > >
> > > Stephen: http://www.light-to-dark.com/ iew my Photos go here
> >http://www.usefilm.com/browse.php?mode=port&data=17313
> >Dance like no one's watching
> >Love like you've never been hurt before
> >Live like heaven is here on earth
> >121.80/39.75
> >Ray Rochelle
> >
> >
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>
>
> Photoshop for Astrophotographers - http://www.astropix.com/PFA/PFA.HTM
>
>
>
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