Search found 124 matches
- Sun Apr 23, 2006 12:32 pm
- Forum: Photography Through the Microscope Gallery
- Topic: Steroscopy, second attempt
- Replies: 11
- Views: 9311
:idea: why not doing it so much easier by simply blocking left or right half of the condenser aperture for each picture. :idea: No polarizers needed at all, lots of light available. Only for taking images of course. Rik, thanks for your tips. Your viewer sounds like a bargain. Does it by any chance ...
- Sat Apr 22, 2006 1:43 am
- Forum: Photography Through the Microscope Gallery
- Topic: Paramecia and Coleps, COL
- Replies: 4
- Views: 4989
- Sat Apr 22, 2006 1:39 am
- Forum: Photography Through the Microscope Gallery
- Topic: Steroscopy, second attempt
- Replies: 11
- Views: 9311
Absolutely, Wim, looking forward seeing yours. Thanks for the compliments Rik, I know when I see something extraordinary. I think it equals the Nomarski-experience. Too bad I run out of my experimental supply of polaroid, had to use secondbest, held together with sticky tape. I think some of that co...
- Fri Apr 21, 2006 8:44 am
- Forum: Photography Through the Microscope Gallery
- Topic: Steroscopy, second attempt
- Replies: 11
- Views: 9311
I [...] made a pretty good movie of the gill curling as it dried. That's the way you should tell it. :D Seems like what you need next is a beam-splitter in the photo port. Then you could drive two cameras at once with an appropriately aligned polarizer on each one. Absolutely. Should be able to mak...
- Thu Apr 20, 2006 3:26 pm
- Forum: Photography Through the Microscope Gallery
- Topic: Steroscopy, second attempt
- Replies: 11
- Views: 9311
Thanks Rik, encouraging. Need one of those glasses for viewing really. One of my eyes is always un-sharp (-3), so I do not see subtle differences. But it looked very nice through the eyepieces. This time I made sure it was dead. A dose of iodine did the trick, none of that annoying moving around of ...
- Thu Apr 20, 2006 1:48 pm
- Forum: Photography Through the Microscope Gallery
- Topic: Steroscopy, second attempt
- Replies: 11
- Views: 9311
Steroscopy, second attempt
Guys, please try to find some depth in here, I've tried this time to turn condenser filter 180 degrees. This is Meuniera membranaceae, a marine diatom with large bands of chloroplasts. Detail should be subtle, I tried my best to find a subject which would show all detail in focus. Unfortunately I ha...
- Wed Apr 12, 2006 7:57 am
- Forum: Photography Through the Microscope Gallery
- Topic: stereoscopy first trial
- Replies: 6
- Views: 6471
Thanks for helping out Wim, again, it's use is stunning in the microaquaria we use on our inverteds, even when using high NA lenses with little depth of focus. Yep, Rik was right, the thing was alive. Messing around with polaroids between camera and relay lens was time consuming. New thought yesterd...
- Wed Apr 12, 2006 7:46 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Numerical Aperture
- Replies: 22
- Views: 51879
Rene, I agree. The issue I'm wrestling with is how to explain/understand the increased resolution. As long as everything is dry including the subject, it works OK to think in terms of cone angle and wavelength of the illumination. But when immersed in R.I. > 1, it still seems to me that the cone an...
- Tue Apr 11, 2006 3:14 pm
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Numerical Aperture
- Replies: 22
- Views: 51879
Sorry Rik, reacted on an earlier message from you where you were asking yourself how to tell students about NA. But I think that if you embed the diatom in high R.I. mountant and manage to maintain the same cone angle as for low R.I., then you would get higher resolution as discussed above. Still, y...
- Tue Apr 11, 2006 2:50 pm
- Forum: Photography Through the Microscope Gallery
- Topic: stereoscopy first trial
- Replies: 6
- Views: 6471
stereoscopy first trial
Hi guys, the last couple of days I have been looking at my samples in stereo. Quite simple setup actually, check Micscape pages for one of Wim's articles. But I am stunned, really. In our samples there's plenty of detritus with cells mixed in. The 3D view is absolutely amazing and actually quite hel...
- Tue Apr 11, 2006 9:57 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: Numerical Aperture
- Replies: 22
- Views: 51879
Rik, think about NA as angle (aperture), then go on about gratings which show maxima(first order, second order and so on) and then tell students that in order to resolve that grating microscopically, you will need to catch at least the first order max, the more the better, thus, a wide angle. That's...
- Mon Apr 10, 2006 9:01 am
- Forum: Photography Through the Microscope Gallery
- Topic: Micrasterias rotata
- Replies: 3
- Views: 4543
- Mon Apr 03, 2006 8:29 am
- Forum: Photography Through the Microscope Gallery
- Topic: Colours of Spring
- Replies: 5
- Views: 5542
- Sun Apr 02, 2006 11:00 am
- Forum: Macro and Micro Technique and Technical Discussions
- Topic: How will this underwater city fare?
- Replies: 2
- Views: 15505
Forever and ever Nick, with the right conditions. Well that's easier said then done. A bit of light to keep the moss going, perhaps not too tight a covering, adding rain or distilled water if needed after evaporation. Not too much of organic matter and thereby not allowing the stuff to go anoxic is ...
- Sun Apr 02, 2006 10:38 am
- Forum: Photography Through the Microscope Gallery
- Topic: lake sample
- Replies: 14
- Views: 10926