Onion

Images made through a microscope. All subject types.

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Saul
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Onion

Post by Saul »

Sony A6300, PMax, 98 photos, Microphot, Nikon 20x BD inf with 135mm TL
Illumination is done with Sanderson prisms and pol filters.

Bigger: https://live.staticflickr.com/65535/507 ... 346f_o.jpg


Untitled 3-web572x1024U100-G14.jpg
Saul
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Tonikon
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Re: Onion

Post by Tonikon »

The biological structure takes the form of a visual effect of great charm. Really evocative. Congrats!

dolmadis
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Re: Onion

Post by dolmadis »

Very nice Saul.

Can you tell us/show us more about Sanderson prisms please?

Thanks

John

Adalbert
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Re: Onion

Post by Adalbert »

very nice :smt038

Saul
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Re: Onion

Post by Saul »

Thank you all !
dolmadis wrote:
Tue Dec 22, 2020 4:46 am
...Can you tell us/show us more about Sanderson prisms please?
Thanks
John
Hi John,
http://docplayer.net/148119567-Flow-vis ... prism.html
Saul
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dolmadis
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Re: Onion

Post by dolmadis »

Thanks Saul. A quick read tells me that you have been as resourceful as usual and I expect there are some ingenious fabrications that you had to do.

Best, John

Saul
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Re: Onion

Post by Saul »

Couple days after
Now at 50x+140TL=33.75x, minimal retouching
Dried out and some stuff started growing up ...
Different illumination
Bigger:https://live.staticflickr.com/65535/507 ... 7a76_o.jpg

Untitled 2-web574x1024U100.jpg
Attachments
Stereo 1-web288x1024U100.jpg
Last edited by Saul on Thu Dec 24, 2020 7:30 am, edited 1 time in total.
Saul
μ-stuff

pbraub
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Re: Onion

Post by pbraub »

Spectacular images. Thank you for sharing.

adomacro
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Re: Cebolla

Post by adomacro »

Fantastic Images Saul !!!!. You could put pictures of your setup with those prisms. Regards.

Santosh_Patil
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Re: Onion

Post by Santosh_Patil »

Amazing details! Thank you for sharing!

Robert Berdan
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Re: Onion

Post by Robert Berdan »

Very nice images resembles DIC I will read the article you linked to - the dried onion cells are particularly nice.
Cheers
RB

rjlittlefield
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Re: Onion

Post by rjlittlefield »

Saul, the Sanderson prism stuff is totally new to me. I've had a quick read through the paper you referenced, but I have to confess that I'm still unclear on how to adapt the technique for use with macro/micro optics. Can you provide some more information about that? What did you have to do, to make it work in your system?

--Rik

Saul
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Re: Onion

Post by Saul »

Saul, the Sanderson prism stuff is totally new to me. I've had a quick read through the paper you referenced, but I have to confess that I'm still unclear on how to adapt the technique for use with macro/micro optics. Can you provide some more information about that? What did you have to do, to make it work in your system?

--Rik
Hi Rik,
There is one more article by S. R. Sanderson, which I found googling the net.

Setup is based on the DIY condenser and slider adapter for the Microphot DIC intermediate tube and couple polarizers - on the illuminator and above the slider (original Microphot's slot)

Test setup is far away from satisfactory - too thin polycarbonate plates which I could get pretty quickly, are twisting at same point, making distorted picture (of course, there are ways how to stabilize it, but for the proof of the concept it was enough).

I got a thicker (5mm) plate few days ago (Aliexpress, very long shipping)), but it is too big for this setup, have to find a nice way to cut it into the pieces.


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_DSC5943-web713x950U100-G10.jpg
Saul
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rjlittlefield
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Re: Onion

Post by rjlittlefield »

Thanks for the additional info!

So, one stressed plate below the condenser, and the other above the objective?

--Rik

Saul
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Re: Onion

Post by Saul »

rjlittlefield wrote:
Mon Mar 29, 2021 7:03 pm
Thanks for the additional info!

So, one stressed plate below the condenser, and the other above the objective?

--Rik
Yes, and two polarisers
Saul
μ-stuff

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