Very nice, one of my favourite rotifers, looks quite excentric ;.)
I tried to film them, but they are real fast...

Greetings
Jens

Hi, wow, more great photos! Cold is no big problem here, there are several birds the next 20 km around. My chickens would indeed be surprised... Best wishes Jens Thanks Jens, Lou and zzffnn. Jens, I'd have some too if they tolerated the cold better. I'm not sure how well they'd get along with our ch...

Hi,

fine images, well done.
I love peacocks, if they wouldn't fly around so much, I had some...

Best wishes
Jens

carlos.uruguay wrote:Nice

Thank You, Carlos.

Yours
Jens

Hi,

I like the DF best, great image!

Jens

Nice and interesting!

Jens

Hi, Thanks a lot. Right, flatness was a problem. The designer Henry Siedentopf of Zeiss wrote about a maximum nA of 1.5 (Lit.: Kolloid-Zeitschrift; December 1925, Volume 37, Issue 6, pp 327–335; Ueber Neuerungen zur Dunkelfeldbeleuchtung; Henry Siedentopf). The glas of the slide wouldn't give more a...

Hi, I've been playing around with the Leuchtbild condenser... This time the goal was to get darkfield with a 63/1.4 oil immersion lens without stopping this lens down. Placing a 14 mm stop below the condenser was the key to do so... The diatoms were embedded in Naphrax, found at the Hagenburger Kana...

Hi,

very nice, I like that blue effect, too. :-)

Greetings
Jens

Hej Jörgen,

the butterfly scales look really great.
I have not succeded doing something like that with high nA (like my Zeiss Plan Neofluar 25/0.8 Imm. Corr.) because of the very low working distance here.

Greetings
Jens

Hi Fan, I know what You mean, some kind of "transition illumination" between DF and BF, I get it when using the Ultrakondensor (nA 1.2 - 1.4) or the Achr.-Apl. 1.4 multi condenser in DF position (nA 1.1 - 1.4). It looks different (grayish indeed), what we have here works only when the diatom is very...

Hi René, no playing around with condenser position, just maximum up. The diatom was in water, so all the light should normally be removed by total reflexion on top of the glas slide (a common 1mm one). You think of spherical aberrations producing some light below nA 1.33, may be... Yours Jens Hi Jen...

Hi,

I'm still wondering, why it is possible to get darkfield without stopping the objective of nA 1.4 down.

Yours
Jens

Hallo Michael, thanks a lot, indeed it looks like something out in space, I was very surprised when I saw this Amphipleura through my microscope. :-) I love Hubble images, too... Best wishes Jens Hi Jens, when I first saw your post (on the German forum), I thought, probably someone mistakenly posted...

Hi René,

thank you.
You are right, no TIRF as here is no fluorescence.

Yours
Jens

René wrote:Nice result Jens! No, it has nothing to do with TIRF, with that you wouldn't be looking at the skeleton, but at the (fluorescence from the) membrane around the diatom cell.

Best wishes, René