Algae videos

curt0909 · Post by **curt0909** » Fri Jul 06, 2012 6:48 am

Surirella diatom.
http://www.youtube.com/watch?v=oWLTvq3L ... ature=plcp

Various algae. Possibly Oscillatoria and Staurodesmus-convergens

http://www.youtube.com/watch?v=iXs4MYyt ... playnext=1

Cosmarium Desmid with 20x 40x 60x objectives
http://www.youtube.com/watch?v=fr6405ew ... ature=plcp

Pau · Post by **Pau** » Fri Jul 06, 2012 8:10 am

The Cosmarium one is very nice, with all this changes in the illumination.

fpelectronica · Post by **fpelectronica** » Fri Jul 06, 2012 9:28 am

Very good definition of the videos
Francisco

curt0909 · Post by **curt0909** » Fri Jul 06, 2012 11:39 pm

Thanks Pau and Francisco. Illumination changes were very simple. Either rotating lower prism offset or moving upper prism laterally.

uaalgae · Post by **uaalgae** » Sat Jul 07, 2012 11:59 am

The Cosmarium displays "Brownian Movement" of its crystals very nicely.

RogelioMoreno · Post by **RogelioMoreno** » Sat Jul 07, 2012 4:15 pm

Nice videos.

Rogelio

curt0909 · Post by **curt0909** » Tue Jul 10, 2012 1:48 pm

Thank you Rogelio and Uaalgae. The crystals are a bit of an obstacle to photograph with DIC due to their birefringence. My standard setting causes them to appear very bright opposed to the rest of the image. Even when they are not in the plane of focus they cause a bright haze that obscures the details of the focal plane, similar to a fluorescence photograph.