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wait a minute, it was Steve Cannistra that did the
image. I was just complimenting him on doing a great job.
Richard
----- Original Message -----
Sent: Wednesday, October 08, 2003 2:21
PM
Subject: Re: [APML] OT: Pleiades
Mosaic
Great work Richard.
Mike Cole
Richard Crisp
wrote:
----- Original Message -----
From: "Steve" <sc02492@yahoo.com>
To: "Discussion of Film Astrophotography" <astro-photo@seds.org>
Sent: Tuesday, October 07, 2003 7:39 PM
Subject: [APML] OT: Pleiades Mosaic
Hi group,
Here's a mosaic of M45 that I've been working on,
taken with a Canon 10D digital camera:
http://www.starrywonders.com/pleiadessmall.jpg
A higher resolution image can be found at:
http://www.starrywonders.com/pleiadeslarge.jpg
I'm showing this on APML for 2 reasons. First, I
started astrophotography with film and learned a great
deal from Jerry Lodriguss, Matt BenDaniel and others
about image processing. These techniques apply
regardless of the medium that is used to take the
shot. Second, this represents a mosaic, and I learned
this technique from the useful information present on
Rob Gendler's website. So although consumer digital
cameras are somewhere in between film and CCD, the
final common pathway for all of our shots is image
processing, and I've learned a lot from this group.
Details: This represents a total of 30 frames
requiring about 3.5 hours of exposure, taken with the
Canon 10D at ISO1600 (6 to 9 minutes per
exposure), through the LX90 at f6.3, autoguided with
the STV/e-finder. The mosaic was made with a total of
6 different sections of M45 (each section is an
average stack of 5 frames). The frames for
each section were processed as follows: raw
conversion, adaptive dark frame calibration,
alignment, autograding, min/max excluded
averaging, and background compensation done in
ImagesPlus; levels and curves adjustment in Photoshop;
final smoothing done in Pleiades
SGBNR software. Mosaic was constructed in Photoshop
using the technique described by Rob Gendler. Total
processing time was approximately 20 hours over a
period of 3 days.
Hope you like it.
Steve Cannistra
http://www.starrywonders.com
I like it a lot, Steve. Yes, it is that time of year again!
Richard
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Michael Cole
UrbanImager Astrophotography website
http://home.earthlink.net/~urbanimager/index.htm
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