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Re: [APML] OT: Pleiades Mosaic
Steve, that is outstanding! Thanks for including the details so thoroughly.
Stuart
Steve wrote:
>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
>
>
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