Author Topic: The X-Ray image thread by Aurora - various electronics via X-Ray imaging  (Read 76247 times)

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Offline KE5FX

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #375 on: March 24, 2021, 07:13:25 pm »
I can't help thinking that X-Raying (or, more likely, gamma-raying) the Pyramids might reveal some interesting information.

That was Luis Alvarez's thinking as well.  His early work with muon imaging didn't reveal anything too interesting, but it looks like they've continued to pursue the idea.

Are you running the Bioptics or Hamamatsu sensor in your MX-20?  Those images are sharper and cleaner than I tend to get from my Bioptics-based unit.
 

Online Wolfram

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #376 on: March 26, 2021, 06:34:18 pm »
@KE5FX - I am fortunate to have two cabinet-type X-Ray systems. The first was a ScanMax 20 mail scanner, which was very low resolution when it came to me but I modified it with a higher resolution imaging system (without, I hasten to add, affecting the cabinet's X-Ray containment). This is the sort of resolution I got from the original setup (the subject is a Nexus 10, 10" Android tablet, and I am aware there's an aspect ratio error):


That's a quite dramatic improvement. Did you replace the detector with a digital flat panel detector, or is it still based on a screen-camera system?

Edit: Added a film X-ray of a couple of small lightbulbs still in the box, in the spirit of the thread.
« Last Edit: March 26, 2021, 06:42:38 pm by Wolfram »
 

Offline Ultrapurple

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #377 on: March 30, 2021, 07:39:24 am »
I will check which sensor the machine uses the next time I fire it up. If it's a clue, the panel has a single USB connection to the host PC.

@Wolfram: In the Scanmax, I replaced the original high-brightness phosphor sheet with a Kodak Lanex Fine extracted from a used hospital X-Ray dry imaging cartridge got from eBay. (They were/are plentiful as hospitals replaced dry imagers with digital panels). The original imaging system comprised a 45° rear-surface mirror and a TV camera. I replaced the camera with a DSLR (tethered to a PC) and, later, replaced the mirror (which was a bathroom mirror tile!) with a first-surface mirror (front silver).
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Offline Ultrapurple

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #378 on: March 30, 2021, 07:45:23 am »
Here's something I did with the Faxitron recently. It started life as a daffodil.

Interestingly, getting the right X-Ray voltage was important for this image. There was about 2kV between peak image quality and blowing right through the petals.
« Last Edit: March 30, 2021, 11:37:20 am by Ultrapurple »
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Online nfmax

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #379 on: March 30, 2021, 09:52:12 am »
It's a zombie thread that needs resurrecting.  :-+

In that case...


Zombie thread? It's barely out of short pants! Take a look at The Wireless World issue of April 2nd 1921 https://worldradiohistory.com/UK/Wireless-World/20s/Wireless-World-1921-04.pdf on page 7, to see how much the art of Geek has progressed in almost exactly 100 years  8)
 
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Offline Ultrapurple

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #380 on: March 30, 2021, 10:09:19 am »
I doff my hat to nfmax.

There are also some relevant visible images of the subject discussed in the Wireless World piece; I love the 'jigger switch'! (And yes, I am almost old enough to remember what a jigger coil did).
« Last Edit: March 30, 2021, 10:11:36 am by Ultrapurple »
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Online nfmax

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #381 on: March 30, 2021, 10:14:03 am »
I doff my hat to nfmax.

There are also some relevant visible images of the subject discussed in the Wireless World piece; I love the 'jigger switch'! (And yes, I am almost old enough to remember what a jigger coil did).

And WTF is a Billi-condenser?
« Last Edit: April 15, 2021, 02:24:01 pm by nfmax »
 

Offline Ultrapurple

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #382 on: March 30, 2021, 11:08:58 am »
And WTF is a Billi-condenser?

Very useful - even essential - when you're distilling Billi.

Although the Science Museum says it's an early form of adjustable capacitor.
« Last Edit: March 30, 2021, 11:35:48 am by Ultrapurple »
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Offline Ultrapurple

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #383 on: April 13, 2021, 07:22:30 pm »
Now for a bit of fun.

I fired up my older ScanMax ex-mailroom scanner that manages >55kV, meaning it's rather better than the Faxitron at penetrating the sort of metal shields you find in, for example, phones. So I submitted my Samsung S20 5G to the X-Ray Torture Test. The ScanMax hadn't been fired up for a year or more and various bits of the optical system had drifted out of alignment and/or got a bit dusty, so I didn't get quite the same sort of image quality I'd achieved in, for example, the Nexus 5 shown earlier in this thread.

But then I had an idea. I noticed the geometry of the X-Ray image was pretty-much spot-on, so I displayed it full-screen on the phone itself, then photographed that.

I rather like the result.
« Last Edit: April 13, 2021, 07:26:07 pm by Ultrapurple »
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Offline Mr.B

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #384 on: April 13, 2021, 10:34:11 pm »
^ Great lock screen image...
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Online harerod

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #385 on: April 14, 2021, 06:16:04 pm »
@Ultrapurple: Would you consider turning this into a service?  :-+
There must be millions, maybe even dozens, who want that for their own cellphone...
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Offline Ultrapurple

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #386 on: April 15, 2021, 09:24:30 am »
@Ultrapurple: Would you consider turning this into a service?  :-+
There must be millions, maybe even dozens, who want that for their own cellphone...

Well... yes... but...

"Send your highly valuable cell phone to a stranger, along with its unlock codes, so that I can X-Ray it and add the image to your sexting folder"

Actually, I'm beginning to like the idea, provided I can be selective!
« Last Edit: April 15, 2021, 10:21:10 am by Ultrapurple »
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Offline Ultrapurple

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #387 on: April 15, 2021, 10:10:05 am »
Here are a couple of better versions of the S-20 X-Ray.
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Offline Ultrapurple

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #388 on: April 15, 2021, 10:14:40 am »
... And a slightly less heavily processed version.

The X-Rays were made on my modified Scanmax S20 mailroom scanner using a Nikon D700 as the image capture device. This image is an Autostakkert!-stacked version of about 10 images at ISO 2000. Ultimate resolution is in the region of 5 to 7 line pairs/mm, not as good as my Faxitron but the higher energy X-Rays penetrate better.

Resolution is ultimately limited by the fact that the Scanmax tube is not of the microfocus type, so its spot size is relatively large. I mitigate this as best I can by having the subject sitting right on the phosphor, but even 1 or 2 mm of device thickness has a noticeable effect on sharpness.
« Last Edit: April 15, 2021, 10:20:46 am by Ultrapurple »
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Offline Gyro

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Re: The X-Ray image thread by Aurora - various electronics via X-Ray imaging
« Reply #389 on: April 15, 2021, 03:37:23 pm »
Nice image of the wireless charging coil. Something inside me keeps saying 'drill here'.
« Last Edit: April 15, 2021, 03:39:19 pm by Gyro »
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