Search found 2107 matches

by Beatsy
Sat Feb 10, 2024 3:28 am
Forum: Photography Through the Microscope
Topic: Some diatoms from Oamaru with 450nm light
Replies: 6
Views: 3514

Re: Some diatoms from Oamaru with 450nm light

Nicely done Jonathan. I cleaned a bit of diatomite from Allan's farm a few weeks ago and have been sporadically searching strews and picking out forms since. I must have seen hundreds of B. coronata (B for broken) but none even close to being as complete as yours. About 3/4s complete is the best I'v...
by Beatsy
Thu Feb 08, 2024 2:45 am
Forum: Photography Through the Microscope
Topic: Diatom: Auliscus oamaruensis. Nature mimics art?
Replies: 4
Views: 347

Re: Diatom: Auliscus oamaruensis. Nature mimics art?

Thanks folks. These guys are tough to set parallel to the cover. Impossible with my wet adhesive since they rock to the side. Even with solid Debes I find that I need to moisten with breath and then quickly use the needle to push and square the form to the cover. Amen to that! I use a ridiculously t...
by Beatsy
Wed Feb 07, 2024 1:29 pm
Forum: Photography Through the Microscope
Topic: Diatom: Auliscus oamaruensis. Nature mimics art?
Replies: 4
Views: 347

Diatom: Auliscus oamaruensis. Nature mimics art?

Hello all, Here's a 40x brightfield stack of Auliscus oamaruensis, from the Allan's farm deposit, Oamaru, NZ AO-zerene_1--pmn.jpg https://live.staticflickr.com/65535/53515761820_c51df8ce65_o.jpg Given the straight brightfield illumination, the form looks somewhat flat in the shot above. Unlike the s...
by Beatsy
Mon Feb 05, 2024 2:35 pm
Forum: Photography Through the Microscope
Topic: Diatoms: Kittonia elaborata (edit: stereo added)
Replies: 26
Views: 1601

Re: Diatoms: Kittonia elaborata (edit: stereo added)

I shared some a long time ago: https://www.instagram.com/p/CLFGPuIBFre/?utm_source=ig_web_copy_link Those are lovely images! I am intrigued that in these images the large "holes" in the main body indeed look like empty holes, where the corresponding things are filled with a sort of grid in Beatsy's...
by Beatsy
Sun Feb 04, 2024 11:23 am
Forum: Photography Through the Microscope
Topic: Diatoms: Kittonia elaborata (edit: stereo added)
Replies: 26
Views: 1601

Re: Diatoms: Kittonia elaborata (edit: stereo added)

PS. I have a *tiny* cleaned sample of the Russian diatomite that K. tripedia is found in. Sadly, I only found two broken examples in the whole sample (enough for two moderate-sized strews). One of the finds at least has two of the "stalks" intact - but it only acts as confirmation that the species ...
by Beatsy
Sun Feb 04, 2024 5:19 am
Forum: Photography Through the Microscope
Topic: Diatoms: Kittonia elaborata (edit: stereo added)
Replies: 26
Views: 1601

Re: Diatoms: Kittonia elaborata (edit: stereo added)

Always nice to see a SEM image to check optical images against. Thanks for sharing those. As it happens, last night I finally found a perfect K. elaborata and I'm currently figuring out the best way to mount it for extreme macro. The goal is to produce an (optical) image much like the first one you ...
by Beatsy
Mon Jan 29, 2024 2:02 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Zerene conical path option
Replies: 3
Views: 446

Re: Zerene conical path option

Thanks both. I won't need conical path then as I don't do rocking images. I now know why there's a Y-Shift parameter too, which I won't use either. Perfect. Cheers.
by Beatsy
Sun Jan 28, 2024 8:01 am
Forum: Community Members and Friends
Topic: Hello from the East San Francisco Bay Area!
Replies: 2
Views: 303

Re: Hello from the East San Francisco Bay Area!

Hi Nick, welcome to the group.

All that for $300!!? Good grief. That's at least 20 Christmases rolled into one there. Both exceptional scopes, but particularly the Vanox with DIC. Congratulations!

Cheers
Beats
by Beatsy
Sun Jan 28, 2024 3:46 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Zerene conical path option
Replies: 3
Views: 446

Zerene conical path option

I searched this forum and tried Google, but I can't find much (any) information on the "conical path" option, only references to having used it and one oblique reference related to rocking and x/y shift.

What does conical path do and when should, or shouldn't, I use it?

Thanks
Beats
by Beatsy
Fri Jan 26, 2024 1:06 pm
Forum: Photography Through the Microscope
Topic: Diatoms: Kittonia elaborata (edit: stereo added)
Replies: 26
Views: 1601

Re: Diatoms: Kittonia elaborata (edit: stereo added)

...now i also see the cup shaped morphology of the protuberances. It's true that what you see in the stereo *is* cup-shaped, but that's the inside/bottom surface of the hollow ocelli, connected to the stalk. The hi-res views show a different pattern with near-parallel rows of pores running right ac...
by Beatsy
Fri Jan 26, 2024 1:48 am
Forum: Photography Through the Microscope
Topic: Diatoms: Kittonia elaborata (edit: stereo added)
Replies: 26
Views: 1601

Re: Diatoms: Kittonia elaborata (edit: stereo added)

Haha, not SEM. But I did find a colour REM image of the big pores online. https://www.ultrastruktur.bio.lmu.de/de ... marin.html

It's rather satisfying to have resolved so much optically. Nothing like the REM, of course, but pretty good for the resolution available.

Cheers
by Beatsy
Thu Jan 25, 2024 3:11 pm
Forum: Photography Through the Microscope
Topic: Diatoms: Kittonia elaborata (edit: stereo added)
Replies: 26
Views: 1601

Re: Diatoms: Kittonia elaborata (edit: stereo added)

Pull it into your favorite stereo viewer so you can zoom in and crop at the same time. (I use either StereoPhoto Maker or Zerene Stacker, Tools > Stereo > View Existing Stereo Pair > From Input File.) Thanks Rik. I hadn't spotted that feature. It will be very useful. I'm somewhat ashamed to admit I...
by Beatsy
Thu Jan 25, 2024 2:45 pm
Forum: Photography Through the Microscope
Topic: Diatoms: Kittonia elaborata (edit: stereo added)
Replies: 26
Views: 1601

Re: Diatoms: Kittonia elaborata (edit: stereo added)

Wow, beautiful! The stereo makes the shroom-like appendages really pop out of the plane. I wonder what these appendages are useful for ... I understand why people can get addicted to putting diatoms under their scopes! By "chipped" you mean that little dent at the lower edge? C'mon! :wink: The plat...
by Beatsy
Thu Jan 25, 2024 8:23 am
Forum: Photography Through the Microscope
Topic: Diatoms: Kittonia elaborata (edit: stereo added)
Replies: 26
Views: 1601

Re: Diatoms: Kittonia elaborata (edit: stereo added)

Thanks for your comments everyone.

Pau, bigger version here. You'll be looking out of your ears if you get too close though :D

https://live.staticflickr.com/65535/534 ... 8c4d_o.jpg
by Beatsy
Wed Jan 24, 2024 1:38 pm
Forum: Photography Through the Microscope
Topic: Diatoms: Kittonia elaborata (edit: stereo added)
Replies: 26
Views: 1601

Diatoms: Kittonia elaborata (edit: stereo added)

I intended to crow about finally finding a *perfect* example of this species after several years of searching. Not constantly searching, just as and when I got material that contained this species. Every example I found to date (that was more than a broken fragment) had either something missing, a h...