Oamaru diatom - Biddulphia sp

Images made through a microscope. All subject types.

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hkv
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Oamaru diatom - Biddulphia sp

Post by hkv »

Diatoms from Oamaru, NZ. Biddulphia sp (I think). Fossil. Lateral and ventral view. I need to start isolating them better to avoid all the debris. Will try that next. Dried in alcohol, glued to conductive carbon tape, gold sputtered, SEM.

Magnified to an around 1600X on a 21-inch screen.


SEM_1.jpeg


SEM_2.jpg
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rjlittlefield
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Re: Oamaru diatom - Biddulphia sp

Post by rjlittlefield »

Personally I like the debris. It gives a certain sense of reality to what might otherwise look like CGI illustrations.

(Overheard in a flower shop: "They look so perfect they could be artificial!")

--Rik

Sumguy01
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Re: Oamaru diatom - Biddulphia sp

Post by Sumguy01 »

=D> Very nice. Thanks for sharing.

Beatsy
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Re: Oamaru diatom - Biddulphia sp

Post by Beatsy »

Very engaging image, as always. Great stuff.

Diatom-related debris doesn't look anywhere near as interesting under my scope! :cry:

Lou Jost
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Re: Oamaru diatom - Biddulphia sp

Post by Lou Jost »

Exquisite! Congratulations on managing to rotate the focal diatom!

Sym P. le
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Re: Oamaru diatom - Biddulphia sp

Post by Sym P. le »

Agreed, those are fantastic images. Do you have an estimate for the size of the big diatom?

hkv
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Re: Oamaru diatom - Biddulphia sp

Post by hkv »

rjlittlefield wrote:
Tue Nov 28, 2023 5:14 pm
Personally I like the debris. It gives a certain sense of reality to what might otherwise look like CGI illustrations.

(Overheard in a flower shop: "They look so perfect they could be artificial!")

--Rik
That is the drawback with SEM images I think. It is easy that they become CGI like. Especially since some artists color them in vivid and bright colors that is far from the original colors they have under a light microscope.
https://www.instagram.com/micromundusphotography
https://www.flickr.com/photos/micromundus
https://www.youtube.com/channel/UC0UdYN ... YH_litDZjA
Olympus BX51 | Olympus CX23 | Olympus SZ4045 | Carl Zeiss Jena Sedival | Swift FM-31 | Zeiss EVO LS 10

hkv
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Re: Oamaru diatom - Biddulphia sp

Post by hkv »

Lou Jost wrote:
Sat Dec 02, 2023 3:22 pm
Exquisite! Congratulations on managing to rotate the focal diatom!
Oh, I did not rotate it. I managed to find a second specimen that was oriented differently. Once coated in gold, it is difficult to rotate the diatom without making a mess.
https://www.instagram.com/micromundusphotography
https://www.flickr.com/photos/micromundus
https://www.youtube.com/channel/UC0UdYN ... YH_litDZjA
Olympus BX51 | Olympus CX23 | Olympus SZ4045 | Carl Zeiss Jena Sedival | Swift FM-31 | Zeiss EVO LS 10

hkv
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Re: Oamaru diatom - Biddulphia sp

Post by hkv »

Sym P. le wrote:
Sat Dec 02, 2023 6:46 pm
Agreed, those are fantastic images. Do you have an estimate for the size of the big diatom?
Around 100 um in length
https://www.instagram.com/micromundusphotography
https://www.flickr.com/photos/micromundus
https://www.youtube.com/channel/UC0UdYN ... YH_litDZjA
Olympus BX51 | Olympus CX23 | Olympus SZ4045 | Carl Zeiss Jena Sedival | Swift FM-31 | Zeiss EVO LS 10

hkv
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Location: Sweden

Re: Oamaru diatom - Biddulphia sp

Post by hkv »

Beatsy wrote:
Sat Dec 02, 2023 2:54 pm
Very engaging image, as always. Great stuff.

Diatom-related debris doesn't look anywhere near as interesting under my scope! :cry:
Thanks Beatsy, the depth of field and resolution of the SEM helps of course.
https://www.instagram.com/micromundusphotography
https://www.flickr.com/photos/micromundus
https://www.youtube.com/channel/UC0UdYN ... YH_litDZjA
Olympus BX51 | Olympus CX23 | Olympus SZ4045 | Carl Zeiss Jena Sedival | Swift FM-31 | Zeiss EVO LS 10

Lou Jost
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Re: Oamaru diatom - Biddulphia sp

Post by Lou Jost »

hkv wrote:
Sun Dec 03, 2023 2:46 pm
Lou Jost wrote:
Sat Dec 02, 2023 3:22 pm
Exquisite! Congratulations on managing to rotate the focal diatom!
Oh, I did not rotate it. I managed to find a second specimen that was oriented differently. Once coated in gold, it is difficult to rotate the diatom without making a mess.
That's why I was so impressed that you did it. I didn't consider that you might have two of them.

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