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butterfly scales

 
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nanometer



Joined: 30 Apr 2016
Posts: 149
Location: Tucson, AZ

PostPosted: Sat Mar 24, 2018 5:29 pm    Post subject: butterfly scales Reply with quote

Still on my starting road. Got a change to get a few expired butterfly samples. They weren't in great shape, but good enough especially for my first look at these. All with a 20x mitty and my old Minolta 80-200 APO for the tube lens. 6 um steps for each.

First the blue morpho. I read a bit about how this iridescence is created and it's amazing. Scale transparent to red, and then the structured channels seem to only let a blue diffraction band out for any reflectance angle. The fine striations are clearly visible, but not at this image size.



Leopard lacewing:




Cairn's birdwing (I think):



I have a few more up if anyone is interested:

http://lavinia.as.arizona.edu/~swest/butterfly_scales/

In all an informative and fun day.

Steve
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Smokedaddy



Joined: 07 Oct 2006
Posts: 1176
Location: Phoenix, Arizona

PostPosted: Sat Mar 24, 2018 6:00 pm    Post subject: Reply with quote

Nice Steve, just curious, where did you get the specimens?
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nanometer



Joined: 30 Apr 2016
Posts: 149
Location: Tucson, AZ

PostPosted: Sat Mar 24, 2018 6:59 pm    Post subject: Reply with quote

I got them from a local live butterfly exhibit here in town. They usually give the expired ones to the local schools and nowhere else, but when I showed them a picture of my macro rig, they gave me a few.
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Olympusman



Joined: 15 Jan 2012
Posts: 3827

PostPosted: Mon Mar 26, 2018 2:02 pm    Post subject: Scales Reply with quote

Very very nice images.

Mike
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Michael Reese Much FRMS EMS Bethlehem, Pennsylvania, USA
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razashaikh



Joined: 14 Nov 2017
Posts: 124
Location: India

PostPosted: Mon Mar 26, 2018 9:23 pm    Post subject: Reply with quote

Wow! Looks Amazing.
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nanometer



Joined: 30 Apr 2016
Posts: 149
Location: Tucson, AZ

PostPosted: Thu Mar 29, 2018 6:07 am    Post subject: Reply with quote

Thanks so much for looking and the nice comments.

I made my first attempt with a Madagascan Sunset moth. Lighting is difficult due to their high curvatures and reflectivity.

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Smokedaddy



Joined: 07 Oct 2006
Posts: 1176
Location: Phoenix, Arizona

PostPosted: Thu Mar 29, 2018 7:30 am    Post subject: Reply with quote

Very nice!
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nanometer



Joined: 30 Apr 2016
Posts: 149
Location: Tucson, AZ

PostPosted: Fri Mar 30, 2018 6:45 pm    Post subject: Reply with quote

I finally got a decent pic of the sunset moth scales



Still not quite a s nice as I'd like, but it was a big step with the lighting.
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Smokedaddy



Joined: 07 Oct 2006
Posts: 1176
Location: Phoenix, Arizona

PostPosted: Fri Mar 30, 2018 6:48 pm    Post subject: Reply with quote

That's outstanding from my perspective. Same setup? What did you change lighting wise?
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nanometer



Joined: 30 Apr 2016
Posts: 149
Location: Tucson, AZ

PostPosted: Fri Mar 30, 2018 8:44 pm    Post subject: Reply with quote

I couldn't get any configuration with a ring light to work. In the end, just the domed diffuser and a lot of trial and error with 2 FO lights shining on the dome. I found that keeping the lighting aimed low so as to graze over the top of the scales and then the light direction should be along the axis of the scale cylinders.
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