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Posts for: TreborLow
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Mar 10, 2022 22:09:42   #
sippyjug104 wrote:
This is the face view of a long-departed dragonfly that my grandson found by their shed that he gave to me today. It was dried, curled up, missing several legs, and quite dirty. Fortunately, its head and wings were still intact, and after spending time cleaning it, I staged it for a focus stacking session.

I choose the optics for the sessions based on the size of the specimen being able to fill the frame of the camera with what I want to showcase which in this case was a reversed mounted 50mm f/2.8 enlarger lens set at f/5.6 mounted on a partially extended bellow.

This session consists of 203 images taken at a step distance of 35um with constant diffused LED illumination and processed with Zerene Stacker
This is the face view of a long-departed dragonfly... (show quote)
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Feb 25, 2022 10:19:27   #
I remember those tricks and got fairly good at several of them. Never use two at once, like the Duncan Man did!
I recall getting extra strings in a cellophane bag. Also used a small candle to wax the part of the string that rubbed on the axel. That extended the run time.
Now, how about balsa wood gliders??
Bob
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Feb 21, 2022 16:33:36   #
Looks a bit more interesting than the "Whirlpool" we have in the laundry room!!! Thanks for a wonderful image of something so fascinating.
Bob
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Feb 18, 2022 11:05:23   #
Ysarex wrote:
The Darwin Award is a penultimate achievement reserved for a select few. I was amused to see we have someone in the neighborhood with eyes on the prize. From my walk yesterday afternoon. (40mm f/2 Ultron)


Surprised there isn't an ashtray on the other side....
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Feb 15, 2022 11:45:31   #
Thanks for sharing and making me think about the universe....
Bob
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Feb 15, 2022 11:31:00   #
Thanks for sharing and making me think about the universe....
Bob
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Feb 13, 2022 14:28:35   #
Wow! Never thought about the cleaning tools beyond a vacuum and broom with dustpan! OK, I have used alcohol or hydrogen peroxide for skin wounds, but never a steromic to check for debris!!!
Now have a five power microscope lens on extension tubes for my Pentax K3. Just checked out my monitor screen to count the pixels across one image! Stacking is still limited to what I can do with Photoshop and my manual NiSi rail.
Take care,
Bob
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Feb 13, 2022 13:37:51   #
What an interesting contrast with such a smooth surface compared to that bee. Makes sense for a ground dwelling critter to not have places where dirt can accumulate or slow them down. Really appreciate the images and the education.
I too, licked a lot of Green Stamps....postage stamps tasted better!!
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Feb 8, 2022 11:51:27   #
Wow again!! Thanks so much. Are you saving up for that electron microscope??
Bob
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Feb 5, 2022 10:42:20   #
I can't believe you can do better than this setup! Really wonderful!!!! Thanks for sharing.
Bob
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Feb 1, 2022 15:58:46   #
His lighting and detail made the portraits really stand out!
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Jan 30, 2022 12:36:46   #
The final spacing between detectors on some moth antennae are about twice the width of the molecules they detect! What I really appreciate is the incremental sensitivity to follow odors diluted over five miles and then go 'upstream'.
It is purely a sense of smell as shown by a classical experiment where the female moth was in a sealed glass container and the odor was dispersed from a piece of paper nearby. The male moths arrived and hung around the paper and did not see the female!!
Thanks for an excellent image!
Bob
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Jan 29, 2022 16:11:52   #
Thanks for sharing those wonderful images! I recall seeing the one spare engine built for the Royale in a castle in France around 1961. A collector had it in a glass case. The top was engine turned and the slots on the screws lined up with each other! Most impressive!
Bob
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Jan 28, 2022 14:07:07   #
1955?
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Jan 27, 2022 10:56:18   #
Terrific!! Thanks for sharing.
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