Micrasterias and Spirogyra

[RogelioMoreno]

Here two stacked images of Micrasterias that I found recently, the other some kind of alga looks very nice with polarized light.

Edit: Thank you to Franz for the id of the Spirogyra sp.

DIC:


Polarized light with lambda plate:


Polarized light:


Rogelio

[Jacek]

Beautiful specimens and great pictures. I hope that this year we'll see a Micrasterias

[Franz Neidl]

Hello Rogelio,

congatulation to the pictures!
The second alga is a Spirogyra sp.

Franz

[pwnell]

These are wonderful.

Great work Rogelio.

[RogelioMoreno]

Thank you very much for your comments.

Franz, thank you for the id of the second alga.

Rogelio

[Litonotus]

great! Micrasterias - I have not seen it yet...

[arturoag75]

Just amazing

[Stefano B]

Hi Rogelio, beautiful pictures. What sort of lambda plate do you use? (lambda/4? maybe?)

[RogelioMoreno]

Thank you all for your comments.

Stefano, on the second picture I used a lambda plate (full wave retardation). My DIC polarizer has a lambda/4 on top of the linear polarizer (Senarmont kind, this is the kind used by Nikon on its DIC system to change contrast). For my polarized pictures I used my Senarmont DIC polarizer and if I want to change the background color then I put the lambda (full wave) plate into the light train.

Rogelio

[flyer2o12]

Beautiful images Rogelio!! I cannot locate a single fault!

[carlos.uruguay]

A real beauty!

[RogelioMoreno]

Thank you.

Rogelio