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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 MosaicHi 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.comI like it a lot, Steve. Yes, it is that time of year again! Richard _______________________________________________ Astro-Photo mailing list Astro-Photo@seds.org http://seds.org/mailman/listinfo/astro-photo -- Michael Cole UrbanImager Astrophotography website http://home.earthlink.net/~urbanimager/index.htm |
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