Cupric sulfate crystals in mixed illumination

Images made through a microscope. All subject types.

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Marek Mis
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Cupric sulfate crystals in mixed illumination

Post by Marek Mis »

Image


Polarized light with retarders and oblique illumination

Lumipan - CZJ microscope
10 X S planapo Olympus
NFK 2,5 X

Ecki
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Post by Ecki »

Chapeau!

Marek, I have never seen oblique polarized light before! Very nice 3-dimensional!

regards
Ecki

Pau
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Post by Pau »

Very beautiful effect!
Pau

RogelioMoreno
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Post by RogelioMoreno »

Amazing effect!

Rogelio

Cactusdave
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Post by Cactusdave »

Fascinating effect, I will have to try that out.
Leitz Ortholux 1, Zeiss standard, Nikon Diaphot inverted, Canon photographic gear

Starshade
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Post by Starshade »

Fantastic! Like autumn leaves

Mitch640
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Post by Mitch640 »

Beautiful, I was thinking Poinsettias. :)

bromodomain
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Post by bromodomain »

Excellent illumination combination and superb crystals :D

I have been experimenting with the lid of a petri dish as a compensator and I noticed an interesting effect. Imagine 90° crossed polars and you introduce a petri dish wall piece shaped like an oblique filter.

Essentially like that:
______
)_____|

As I translated the new element at first I got very strong oblique-like effect when the compensator plate was not fully inserted. One end of the field was still at crossed polars whereas the other was shining bright and colourful :shock:

Appart from a basic differential contrast I achieved wavelength gradient which again produced differential contrast but this time much more colourful.


All that you need to add to your polarising microscope is a petri dish :)

Is it ok if I post such pics here or would you prefer that I to make my own thread? :)

Jan l'Amie
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Post by Jan l'Amie »

Very nice picture. How do you create the oblique light ?

rjlittlefield
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Post by rjlittlefield »

bromodomain wrote:Is it ok if I post such pics here or would you prefer that I to make my own thread?
Admin prefers a new thread. It makes things a little easier to find later if the main author and a descriptive title are listed when Search returns its results.

--Rik

arturoag75
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Post by arturoag75 »

Excellent :D :D :shock:
Arturo

Marek Mis
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Post by Marek Mis »

Hello,

Thank you all for your very nice comments :D

Jan,
I create my oblique illumination by sliding to the side (off the center) the whole diaphragm on the base of the microscope under the condenser. In my old microscope (Lumipan) the condenser doesn't have its own diaphragm. It there is on the top of the base of the microscope instead to be integrated with the condenser (which is pancratic one). Sincerely I would prefer the ordinary solution of the way of the illumination but in this particular case it works quite good.

Bromodomain,
I think the Rik suggestion if about your post is right. It will be much better if you give us your new post instead of inserting it to mine one.

Regards

Marek

Jan l'Amie
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Post by Jan l'Amie »

O.k., I slide the filter under the condensor a little out off the centre or for more oblique effect I place the home-made Kreutz filter under the condensor.

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