Diatoma, Navicula, Gyrosigma and Another Small Centric

[rnabholz]

Some that caught my eye tonight.

AO 10, Ortho Illuminator, 100 and 50X Oil Iris Plan Achros, 214 Darkfield Condenser, Canon 70D, Single Frames

Gyrosigma 189µm 50x

Gyrosigma 0225.JPG (51.32 KiB) Viewed 4275 times

Navicula 76µm and 51µm 100x

Navicula Pair 0166.JPG (55 KiB) Viewed 4275 times

Diatoma 63µm 100x

Diatoma 0234.JPG (49.59 KiB) Viewed 4275 times

Gyrosigma 82µm Centric 12µm Broken Epithemioid

Trio 0230.JPG (93.29 KiB) Viewed 4275 times

[75RR]

Very nice. Especially like the first one, very attractive image.

[rnabholz]

Very nice. Especially like the first one, very attractive image.

Thanks 75.

I find Gyrosigma to be one of the most beautiful of all the diatoms i have encountered. The grace of its shape, the fine detail and that center that is so reminiscent of an eye.

It is very hard for me to resist shooting one when I find it.

[gekko]

I agree with 75RR. Very nice images, and your Gyrosigma i especially beautiful (I know this is heresy, but to my eyes the CA in this case enhances the beauty of the image).

[rnabholz]

I agree with 75RR. Very nice images, and your Gyrosigma i especially beautiful (I know this is heresy, but to my eyes the CA in this case enhances the beauty of the image).

Thanks Gekko - let's call it making lemonade from lemons my optics hands me.

As it isn't likely to change any time soon, I should really develop my fondness lemonade too. ;^)

[billben74]

I'm with you on Gyrosigma. Great name for it.
Your image shows its subtle s or perhaps better integral-operator-like shape beautifully.
You've made want to go and check if Klaus has one for those on his 30 form....

[rnabholz]

I'm with you on Gyrosigma. Great name for it.
Your image shows its subtle s or perhaps better integral-operator-like shape beautifully.
You've made want to go and check if Klaus has one for those on his 30 form....

Thanks Bill

I would think it would certainly be in the line up of a 30 form.

Rod

[vasselle]

Bonjour
Très belles séries images
Merci pour le partage
Cordialement seb

[rnabholz]

Merci Seb

[Charles]

All four are especially nice. I like your diversity of specimens.

[hb2sbdb]

beautiful diatom images!

i did not realize they have such pretty colors!

They are also like fractals. the more you zoom in, the more details they become...

Thank you for sharing.

[KurtM]

I like the fractals analogy, and often remark that diatoms continuously tantalize us with detail that's just ever so slightly out of reach, and forever cause us to stretch the limits of optical performance (and budgets!) like the photon misers we become. But at the same time, gotta say SEM imagery pretty well tells tales with periods at the ends of the sentences; so there, I'm afraid, the analogy must end.

What's best about Rod's images is that they have a way of firing up interest and generating very well deserved interest in diatoms. Now THAT'S cool!

[rnabholz]

All four are especially nice. I like your diversity of specimens.

Thank you Charles, I try to mix it up to hold interest. Most slides make that easy to do.

[rnabholz]

beautiful diatom images!

i did not realize they have such pretty colors!

They are also like fractals. the more you zoom in, the more details they become...

Thank you for sharing.

Thank you hb2.

I believe that the colors are primarily caused by what is technically an optical "defect", chromatic aberration.

Very common in achromat objectives, especially at high magnifications. But as you say, sometimes the effect can be pleasing.

The downside is the negative effect it can have on resolution.

Thanks for the interest.

Rod

[rnabholz]

I like the fractals analogy, and often remark that diatoms continuously tantalize us with detail that's just ever so slightly out of reach, and forever cause us to stretch the limits of optical performance (and budgets!) like the photon misers we become. But at the same time, gotta say SEM imagery pretty well tells tales with periods at the ends of the sentences; so there, I'm afraid, the analogy must end.

What's best about Rod's images is that they have a way of firing up interest and generating very well deserved interest in diatoms. Now THAT'S cool!

Thank you Kurt, you dragged me into this.....ok, I came willingly, and am enjoying it, so thanks.