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amoeba of the day..

Posted: Tue Apr 20, 2021 2:59 pm
by chrisimbee
hello,

just a fex pic of some amoebas found in one of my petri dish...
20 avril 21 amibe 3.jpg
20 avril 21 amibe 3.jpg (107 KiB) Viewed 1574 times
20 avril 21 amibe 3.jpg
20 avril 21 amibe 3.jpg (107 KiB) Viewed 1574 times
Microscope Bresser trino research,
phase contrast objectif LOMO x40
daylight filter
astro camera : ASI ZWO 120MC

Re: amoeba of the day..

Posted: Tue Apr 20, 2021 3:00 pm
by chrisimbee
there must be a bugg somewhere.. i posted the 1st pic only once and it posted it twice ;
it did that to me yesterday too..

Chris

Re: amoeba of the day..

Posted: Tue Apr 20, 2021 8:12 pm
by IanW
Very good phase contrast effect. Which particular Lomo objective did you use?

Re: amoeba of the day..

Posted: Tue Apr 20, 2021 9:31 pm
by chrisimbee
Thanks a lot ; I used a

LOMO x40 phase

and a last photo without the blue filter ; so far i dont have any phase condenser : i've just drawn a phase annulus on the frosted filter and put it into the filter holder of the condenser ; and adjusted the height in order to get superimposed both the image of the annulus with the phase plate .
20 avril 21 amibe 4.jpg
20 avril 21 amibe 4.jpg (65.93 KiB) Viewed 1540 times

Re: amoeba of the day..

Posted: Tue Apr 20, 2021 9:32 pm
by chrisimbee
20 avril 21 centrage anneau excentré.jpg
20 avril 21 centrage anneau excentré.jpg (73.3 KiB) Viewed 1540 times
20 avril 21 centrage 3.jpg
20 avril 21 centrage 3.jpg (44.15 KiB) Viewed 1540 times

Re: amoeba of the day..

Posted: Tue Apr 20, 2021 9:37 pm
by chrisimbee
sorry i made a mistake with the photos (i posted the new LOMO phase x20 i received last we) .
obj LOMO ph x40 b .jpg
obj LOMO ph x40 b .jpg (121.63 KiB) Viewed 1540 times
obj LOMO ph x40.jpg
obj LOMO ph x40.jpg (113.36 KiB) Viewed 1540 times
they are still available on ebay and my microscope cant work on Köhler illumination and nevertheless I can make the phase objectives work fine !