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Old 01-07-2018, 04:35 AM
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Default Coins under the microscope.

I guess it's time for a new thread. I'm playing around with coins under the microscope. This first set, I found an old corroded penny in my car.

The first one is not a comment on the world today, really:



The second really, really isn't.



Each one is stitched together from 2 images - I really should have used 3 for the "Liberty" one. Also, need to play around a bit more, I'm unsatisfied with these.
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Old 01-07-2018, 05:23 AM
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Default Re: Coins under the microscope.

:coolness:
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Old 01-07-2018, 05:40 PM
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Default Re: Coins under the microscope.

Quote:
Originally Posted by specious_reasons View Post
playing around with coins
:capitalistpig:
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Old 01-08-2018, 06:32 PM
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Default Re: Coins under the microscope.

More practice.

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  #5  
Old 01-09-2018, 11:22 PM
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Default Re: Coins under the microscope.

If you do not have, would you like, a few 1950s wheat pennies which are full copper and a few 1940s steel pennies (that are as you guessed steel)?
I'm not quite sure what you could get from them compared to modern pennies but I have literally thousands of the wheat pennies in a variety of commonly found years.
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Old 01-10-2018, 07:54 AM
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Default Re: Coins under the microscope.

Quote:
Originally Posted by Ari View Post
If you do not have, would you like, a few 1950s wheat pennies which are full copper and a few 1940s steel pennies (that are as you guessed steel)?
I'm not quite sure what you could get from them compared to modern pennies but I have literally thousands of the wheat pennies in a variety of commonly found years.
Oooh, tempting. It's worth a look, at least.
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Old 01-10-2018, 03:25 PM
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Default Re: Coins under the microscope.

I only have a cheap toy microscope :sadcheer:
...but I tried to use it to capture the so-called 'hologram' (not really a hologram) part of the new UK pound coin - and it sort-of worked to a slight extent. :cheer:




You can just about make out how, when the light is changed from the right to the left the symbol changes from a to a 1.


Zooming in a bit to look at the tiny writing around the edge that you can't see without a microscope (unless you have very good eyes).


Zooming in some more on the 'hologram' part.
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Old 01-28-2018, 05:48 AM
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Default Re: Coins under the microscope.

Finally got into photographing one of the coins Ari sent to me.

Spent the last couple of hours attempting to stitch together some pictures, only to find my tools inadequate.

I did get an 'N'.



I thought this turned out OK, too.



Oh, and I was also distracted by this:



I think this is a dead flower head from a red elderberry bush, but Mrs. Reasons called it "the nasty plant with red berries."
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Old 01-29-2018, 01:08 AM
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Default Re: Coins under the microscope.

Quote:
Originally Posted by specious_reasons View Post

Oh, and I was also distracted by this:



I think this is a dead flower head from a red elderberry bush, but Mrs. Reasons called it "the nasty plant with red berries."
Same thing, different light.
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  #10  
Old 03-05-2018, 07:56 AM
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Default Re: Coins under the microscope.

So, experimenting with the new camera:

With the full frame camera, I get a much larger field of view, but you might be able see that the corners are out of focus - it look like the adapter I have isn't completely adequate...



But otherwise, I'm pretty happy with the results in general:


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Old 03-05-2018, 12:46 PM
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Default Re: Coins under the microscope.

Purchase new adapter forthwith!
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Old 03-05-2018, 03:20 PM
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Default Re: Coins under the microscope.

Quote:
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Purchase new adapter forthwith!
Well, I'll probably just trim the images for the foreseeable future. I've already spent too much this week.
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Old 03-05-2018, 04:39 PM
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Default Re: Coins under the microscope.

:capitalistpig:
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Old 03-05-2018, 07:06 PM
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Default Re: Coins under the microscope.

Quote:
Originally Posted by specious_reasons View Post
Quote:
Originally Posted by JoeP View Post
Purchase new adapter forthwith!
Well, I'll probably just trim the images for the foreseeable future. I've already spent too much this week.
I understand. Next week will be fine.

That's definitely unforeseeable.
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Old 03-05-2018, 09:53 PM
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Default Re: Coins under the microscope.

Oow new gear! And the magic of new gear to be both exciting and make your other gear feel inadequate. You will soon learn that a new adapter requires a quantum tunneling microscope to function and of course quantum microscopes can't run on your houses outdated wiring, you'll just need to build a new house if you want to continue.

Also I'm not sure I ever noticed the 9's don't connect.
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Old 03-05-2018, 10:30 PM
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Default Re: Coins under the microscope.

What do bitcoins look like under the microscope? :chin:
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Old 03-06-2018, 12:14 PM
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Default Re: Coins under the microscope.

Ooh. Yuck!
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Old 03-06-2018, 08:35 PM
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Default Re: Coins under the microscope.

I'm new at this, but I was able to get a pretty good shot of a bitcoin under a microscope.
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Old 05-27-2018, 09:59 PM
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Default Re: Coins under the microscope.

Some quickies to get a sense of what the steel penny looks like. Most are a single shot at around 40x, then trimmed a bit to reduce the out of focus area.




This one isn't trimmed, so I could keep the whole number.




This one is around 100X, highlight on the "8":






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Old 10-07-2018, 01:16 AM
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Default Re: Coins under the microscope.

Not actually a coin. This was a souvenir from Butte, MT - one ounce of copper. It nicely has the atomic data for copper etched into it. The 29 fit almost perfectly.

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Old 10-07-2018, 08:44 PM
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Default Re: Coins under the microscope.

Quote:
Originally Posted by specious_reasons View Post
Not actually a coin. This was a souvenir from Butte, MT - one ounce of copper. .
So, did you take a gander at Berkeley Pit?
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Old 10-07-2018, 10:38 PM
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Default Re: Coins under the microscope.

Quote:
Originally Posted by godfry n. glad View Post
Quote:
Originally Posted by specious_reasons View Post
Not actually a coin. This was a souvenir from Butte, MT - one ounce of copper. .
So, did you take a gander at Berkeley Pit?
Yes... It was quite hazy at the time, so not much from that part of the trip made it out to social media.

IMG_5670.jpg
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Old 10-13-2018, 08:56 PM
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Default Re: Coins under the microscope.

I got a new camera adapter - one that specifically claims to support full frame cameras as 2x magnification. So, I'm seeing less lens aberrations at the corners on my pictures, but the image is more magnified - strangely, both adapters claim 2X magnification, but one is clearly more magnified. I'm guessing the old adapter was claiming 2X at a 1.6 crop factor.

Anyway, see the difference?

IMG_6143-1.jpg
vs.
IMG_6150-4.jpg


and

IMG_6146-2.jpg
vs.
IMG_6148-3.jpg

One bonus pic, I bought a 12 oz (340 g) container of iron filings. I had some ideas what I might like to do, but this was a test pic, and it's way more magnified than I anticipated... may have to rethink what I want to do.

IMG_6151-5.jpg

I also noticed it's not 100% pure iron filings! It looks like there's some quartz in there or something.
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