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Both Ends of 2 Dragonflies

 
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svalley



Joined: 03 Dec 2006
Posts: 306
Location: Albany, Oregon

PostPosted: Sat Jan 27, 2007 5:40 pm    Post subject: Both Ends of 2 Dragonflies Reply with quote

Epithica spinigera and Epithica canis showing the differences in the markings on the top of the frons and lateral views of the terminal appendages that the males use to grasp the female's head during mating.



Leica MZ16 stereomicroscope w/extended depth of field imaging system
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Steve Valley - Albany, Oregon
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beetleman



Joined: 04 Aug 2006
Posts: 3578
Location: Southern New Hampshire USA

PostPosted: Sat Jan 27, 2007 6:12 pm    Post subject: Reply with quote

"So Many Insects...So Little Time" Steve, I don`t know what to say. They are spectacular.
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Charles Krebs



Joined: 01 Aug 2006
Posts: 5805
Location: Issaquah, WA USA

PostPosted: Sat Jan 27, 2007 8:51 pm    Post subject: Reply with quote

Very nice Steve! Perhaps you mentioned it somewhere already, but what is the magnification range of the Leica scope you are using?
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Bruce Williams



Joined: 30 Oct 2006
Posts: 1120
Location: Northamptonshire, England

PostPosted: Sun Jan 28, 2007 3:45 am    Post subject: Reply with quote

Excellent photos Steve and so much more interesting the way you've presented equivalent images of the two species for easy comparison.

Bruce
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svalley



Joined: 03 Dec 2006
Posts: 306
Location: Albany, Oregon

PostPosted: Sun Jan 28, 2007 8:10 am    Post subject: Reply with quote

Thanks for your comments, guys.

Charles, the MZ16 has a range from 4.5x to 115x. I could double that with a 2.0x objective, but the working distance is so tight that creative lighting would be almost impossible. I have 2 objectives, a 0.63x and a 1.0x, both are APOs. When we added our new camera there was a 1.6x magnification boost in the images, because it has more pixels on a smaller sensor. These images were shot with the old camera (1600x1200). The new camera is 2560x 1920.
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Steve Valley - Albany, Oregon
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