Around Polysiphonia

WalterD · Post by **WalterD** » Sun Sep 23, 2018 9:02 am

A tiny sample of the red alga polysiphonia, contains many different diatoms and all kinds of zooplankton, I discovered. This was also a good oportunity to experiment with DIC combined with electric flash, which I made flashing through the original lamphouse (backcover removed). And of course good to work again with oil immersion.

Somehow this setup works the best with 0.90 Na condenser, while the 100x objective has a numeric aperture of 1.30. Which basically limits the performance of the 100x lens...
1 Polysiphonia, 25x/0.75 oil immersion
2 Licmophora growing on the red alga, 100x/1.30 o.i.
3 Hydrozoa 10x/0.30 ( >see clip)
4 Navicula 100x 0.i
5 Grammatophora marina 100x o.i
6 unidentified diatom100x o.i.

Jacek · Post by **Jacek** » Sun Sep 23, 2018 11:03 am

Very nice

WalterD · Post by **WalterD** » Sun Sep 23, 2018 11:21 am

Thank you, Jacek.
The clip can be downloaded via: https://we.tl/t-FIfLphtZLw

Cheers,

Walter

Sumguy01 · Post by **Sumguy01** » Sun Sep 23, 2018 9:44 pm

Nice set.
Thanks for sharing.

vasselle · Post by **vasselle** » Mon Sep 24, 2018 10:49 am

Bonjour
Très belles images
Cordialement seb

Smokedaddy · Post by **Smokedaddy** » Mon Sep 24, 2018 11:22 am

... excellent set of images. I especially like the Licmophora.

WalterD · Post by **WalterD** » Sat Sep 29, 2018 1:23 pm

Thanks!
I continued with the sample today, after keeping it in the refrigerator the entire week. There was still plenty to see, even things I did not notice previous session.
The 1.30 condenser was used this time together with below mentioned high Na objectives . Picture 8 was merged.

07 Coscinodiscus concinnus, 63x/1.30 oil immersion
08 Vorticelloid 100x/1.30 oil immersion
09 Larvae unidentified 25x/0.75 oil immersion
10 Licmophora 63x/1.30 oil immersion

Regards,
Walter

ralfwagner · Post by **ralfwagner** » Sun Sep 30, 2018 10:17 am

Super!

Jacek · Post by **Jacek** » Mon Oct 01, 2018 3:39 am

arturoag75 · Post by **arturoag75** » Thu Oct 04, 2018 11:16 am

Beautiful!

carlos.uruguay · Post by **carlos.uruguay** » Sat Oct 06, 2018 4:49 pm

A beauty!!!!!!!!!!!!!!!!!!
Thanks for sharing!