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M16

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Posts Made By: Jean-Denis Douvier

November 4, 2008 11:46 PM Forum: Digital SLR AstroPhotography

M74

Posted By Jean-Denis Douvier
Same spot, taken on 10/30. I like this galaxy, not too small, nice spiral and nice structure to play with.
Total exposure 2hours, 24 x 5min, Canon 20Da, ISO 1600. Telescope is Celestron 9.25, F=1480mm, f/6.3. Losmandy G-11, I use PHDGuiding to auto-guide with a Phillips webcam and Takahashi FS60.
Calibrated, aligned, stacked with ImagePlus, histogram stretched with Photoshop.

Thanks for looking!
Clear skies
JD

January 29, 2009 02:24 AM Forum: Digital SLR AstroPhotography

From Orion to Horsehead

Posted By Jean-Denis Douvier
This is a mosaic of 6 frames taken on 10/30/08, 11/26/08 and 01/26/09 at Doughton Park on the Blue Ridge Parkway.
Takahashi epsilon 160 at f/3.3
Canon 20Da at ISO 1600
Losmandy G-11
Auto-guiding with PHD guiding, Tak FS60, webcam.
Calibrated in ImagePlus, assembled and edited in Photoshop. That was a project ! Each frame is exposed for 1h30 (30 x 3min) for a total of 9 hours.
Different sizes of that picture can be seen at :
http://www.jdvstudio.com/JDVStudio/Astrophotography/OrionMosaic/Mosaic.html

Thanks for looking !

November 8, 2005 02:39 PM Forum: Digital SLR AstroPhotography

M45, The Pleiades

Posted By Jean-Denis Douvier
Nice ! I like the spikes and the nebulosity. In order to lower the noise in the middle of the picture, instead of shooting 6 x 8 min, shoot 20 x 8 min or 30 x 8 min if you can. The more pictures, the less noise.

November 28, 2005 04:52 PM Forum: Digital SLR AstroPhotography

M31 - First Light

Posted By Jean-Denis Douvier
Good shot, continue. It takes some time to get satisfying results.
For information on how to process, I suggest you have a look at
http://www.astropix.com/PFA/PFA.HTM
as well as (this is my "article", I explain how I shoot my pictures based on my experience. Not exactly the state-of-the-art but it works for me)
http://www.deepskyimaging.com/articles/Astroprocessing.aspx

December 3, 2005 10:26 PM Forum: Digital SLR AstroPhotography

M42 with Canon 350D & AP 130 F/6

Posted By Jean-Denis Douvier
Very nice !

January 2, 2006 05:09 PM Forum: Digital SLR AstroPhotography

M42 from weekend

Posted By Jean-Denis Douvier
Great picture !! grin

February 7, 2006 05:02 PM Forum: Digital SLR AstroPhotography

M42 1D MarkII single frame

Posted By Jean-Denis Douvier
Noise ? I see a lot of noise in that picture...

February 17, 2006 04:50 PM Forum: Digital SLR AstroPhotography

Forgotten Image: Orion's Belt and Sword

Posted By Jean-Denis Douvier
Nice ! very nice field of view, good colors and lots of nebulosity as you say.

For comparison, here again the same area taken in March 05 with my Canon 20D with the Canon 200mm L lens set at f/4. ISO 800, 20 pictures of 5 minutes each for a total of 1h40min, combined together with Photoshop. The field of view is smaller of course, and the sensitivity to nebulosity is smaller too.
I think the comparison is interesting, and your picture better. :-)

March 3, 2006 02:41 PM Forum: Digital SLR AstroPhotography

M42 region luminous version

Posted By Jean-Denis Douvier
What a great picture...! Nice details.

March 9, 2006 06:59 PM Forum: Digital SLR AstroPhotography

My first Astrophoto- Canon 20D

Posted By Jean-Denis Douvier
Good picture... if that's your first ever long exposure, what will come next ? It took me more than one year to get something like that. The alignment looks good... You must have digitally processed it to get rid of light pollution, right ?
Watch out for planes, you have one passing through the picture in the lower left corner (if Astromart always displays pics with the same orientation). It also looks like you have some flare from the lens, near the center of Orion, but below it, visible against the black background.

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