Search found 947 matches

by hkv
Sun Apr 15, 2018 8:06 am
Forum: Pictures and Videos
Topic: Closterium
Replies: 9
Views: 1207

Re: Closterium

Very nice set! The first one is my favourite.
by hkv
Sat Apr 07, 2018 9:37 pm
Forum: Pictures and Videos
Topic: Cosmarium
Replies: 8
Views: 1374

Re: Cosmarium

75RR wrote:Beautiful darkfield image - love the clarity!
Thanks, yes, Darkfield gives a special look to it. Better than DIC actually.
by hkv
Sat Apr 07, 2018 9:36 pm
Forum: Pictures and Videos
Topic: Cosmarium
Replies: 8
Views: 1374

Re: Cosmarium

Please don't be offended, but they look kind of other-world science fiction like with that illumination. Maybe like the brains of some alien life forms. Amazing photos! Under ordinary bright field they would look kind of plain by comparison. Ha, ha, no not offended! Yes, a friend of mine called the...
by hkv
Sat Apr 07, 2018 8:52 pm
Forum: Pictures and Videos
Topic: Cosmarium
Replies: 8
Views: 1374

Cosmarium

I just got a new darkfield (oil) condenser for my scope which I have been playing around with. Also, bought a retarder (wedge plate) which generates a lot of nice colors! This subject is Cosmarium, a desmid. 40X, Darkfield: https://farm1.staticflickr.com/895/40380380735_aa4d0ba086_b.jpg Cosmarium by...
by hkv
Fri Apr 06, 2018 4:26 pm
Forum: Pictures and Videos
Topic: Micrasterias
Replies: 12
Views: 1529

Re: Micrasterias

Excitation filter: 440-440 nm Dichroic mirror: 455 nm Emission: 475 nm The 440 is quite inside the excitation range for chlorophylls and pheophytins, but other molecules will also be excited.. The dichroic mirror and emission filters are also not specific for chlorophylls, but allow you to observe ...
by hkv
Fri Apr 06, 2018 3:10 pm
Forum: Pictures and Videos
Topic: Micrasterias
Replies: 12
Views: 1529

Re: Micrasterias

Great catch + great images Have not seen one for ages Have you thought about using the 40x and combining the partial images via stitching? Note: stitching software requires a large image overlap Thank 75RR. I have several stitches shot, but I have not had the time to post process them yet. Also, I ...
by hkv
Fri Apr 06, 2018 3:07 pm
Forum: Pictures and Videos
Topic: Micrasterias
Replies: 12
Views: 1529

Re: Micrasterias

@hkv Very nice and impressive work. I wonder which wavelength you used to excite the red fluorescence, and which setup (lamp, filter cubes etc). Are these on the Olympus BX51? I am asking since there are several possible wavelengths, and several chlorophyll and related molecules. Yes, Olympus BX51....
by hkv
Sun Apr 01, 2018 9:19 am
Forum: Pictures and Videos
Topic: Micrasterias
Replies: 12
Views: 1529

Micrasterias

Lucky to have found Micrasterias in my samples, which are very beautiful (and big). Could not fit the entire subject with the 40X, so the full body shots are taken with a 20X objective. I just acquired a new oil darkfield condenser so this is the first image with the new toy. 20X, Polarized light: h...
by hkv
Mon Mar 26, 2018 6:50 pm
Forum: Pictures and Videos
Topic: another red Alga
Replies: 13
Views: 1246

Re: another red Alga

I really like the soft look of this image. Fantastic!
by hkv
Sat Mar 24, 2018 9:08 am
Forum: Pictures and Videos
Topic: A couple more Diatoms from that sample jar
Replies: 26
Views: 2522

Re: A couple more Diatoms from that sample jar

Wonderful images!
by hkv
Sat Mar 24, 2018 9:04 am
Forum: Pictures and Videos
Topic: Pink Alga + Zygote?
Replies: 12
Views: 1232

Re: Pink Alga + Zygote?

Beautiful! I believe the pink is a red algae, Polysiphonia. I could be wrong
by hkv
Fri Mar 09, 2018 4:57 pm
Forum: Identification help
Topic: Unknown organism
Replies: 3
Views: 1324

Re: Unknown organism

It is a water mite. They live in water.
by hkv
Tue Feb 27, 2018 10:10 pm
Forum: Pictures and Videos
Topic: More Daisy Anomalies
Replies: 3
Views: 547

Re: More Daisy Anomalies

Very nice!
by hkv
Tue Feb 27, 2018 8:55 pm
Forum: Pictures and Videos
Topic: Sprossquerschnitt einmal anders
Replies: 6
Views: 802

Re: Sprossquerschnitt einmal anders

Love the last one!
by hkv
Tue Feb 27, 2018 11:22 am
Forum: Pictures and Videos
Topic: Well I didn't see this coming...
Replies: 18
Views: 1547

Re: Well I didn't see this coming...

Agree on the bug definition. A bug is anything small with moving legs or wings, hence highly likely to attack you. All you want to do is to smack it with a shoe. That's a bug. Here is a water mite I shot and the second one shows the mouth parts. Kind of creepy bugs these mites. https://farm5.staticf...
by hkv
Sat Feb 24, 2018 5:10 pm
Forum: Pictures and Videos
Topic: Really neat looking algae formation
Replies: 3
Views: 472

Re: Really neat looking algae formation

That looks like Pediastrum
by hkv
Sat Feb 24, 2018 5:02 pm
Forum: Miscellaneous
Topic: How can I get them to hold still???
Replies: 8
Views: 1797

Re: How can I get them to hold still???

5% Glutaraldehyde. That will stop them instantly.
by hkv
Fri Feb 23, 2018 9:49 pm
Forum: Pictures and Videos
Topic: Euglena, Algae, Diatom and Cyano
Replies: 16
Views: 1678

Re: Euglena, Algae, Diatom and Cyano

Thank you for the description of your method! I was so interested about it because it is a long term project of mine to get into photographing moving objects. Your description gave me several new insights about what to do and what to avoid. When you start with a vintage Zeiss Jena NF or Zeiss GFL w...
by hkv
Fri Feb 23, 2018 4:58 pm
Forum: Pictures and Videos
Topic: Euglena, Algae, Diatom and Cyano
Replies: 16
Views: 1678

Re: Euglena, Algae, Diatom and Cyano

Freezing the action is simple with flash. But stacking plankton would need a very stationary object or a very fast camera. My Nikon 1j5 can take 20 images in 0,33 seconds. It would also be possible to extract the images from a film. But how does hkv do it? Håkan, show us some of your wizardry! WOW....
by hkv
Thu Feb 22, 2018 9:18 pm
Forum: Pictures and Videos
Topic: Euglena, Algae, Diatom and Cyano
Replies: 16
Views: 1678

Euglena, Algae, Diatom and Cyano

Hello my friends, thought I would share these recent shots I have been stacking. The diatom is marine and was collected during my vacation in Islamorada, Florida. Out of a full bottle of sea water, this was all I managed to find. At least he was alive, but somewhat a disappointment that I could not ...
by hkv
Tue Feb 06, 2018 9:39 pm
Forum: Pictures and Videos
Topic: Mikadostäbchen
Replies: 8
Views: 1426

Re: Mikadostäbchen

Very nice!
by hkv
Tue Feb 06, 2018 9:38 pm
Forum: Pictures and Videos
Topic: Desmid - Closterium
Replies: 14
Views: 1479

Re: Desmid - Closterium

billben74 wrote:They are great subjects. As ever with your images beautifully taken
Thanks!
by hkv
Tue Feb 06, 2018 9:38 pm
Forum: Pictures and Videos
Topic: Hydre
Replies: 5
Views: 931

Re: Hydre

Super!
by hkv
Tue Feb 06, 2018 9:37 pm
Forum: Pictures and Videos
Topic: Division of the ciliate Lembadion
Replies: 11
Views: 1374

Re: Division of the ciliate Lembadion

Never seen this before! Thanks for sharing.
by hkv
Tue Feb 06, 2018 9:36 pm
Forum: Pictures and Videos
Topic: Star Ant
Replies: 11
Views: 1403

Re: Star Ant

Very nice results and interesting! I am pleased to see the old art of "hand stacking" being used once in a while. I used the same technique on the arcella.
by hkv
Tue Feb 06, 2018 9:30 pm
Forum: Pictures and Videos
Topic: Copepod, Amoeba and Algae
Replies: 14
Views: 1448

Re: Copepod, Amoeba and Algae

Thank you all for your kind comments! Hello Hakan, they are all great. I like the Arcella best. I believe its a young Arcella gibbosa, when they grow older they partly loose their hyalanity. The blob bottom left of the sarcode is a contractile vacuole. By osmotic pressure the organism constantly abs...
by hkv
Sun Feb 04, 2018 11:45 pm
Forum: Pictures and Videos
Topic: Tartric Acid crystals
Replies: 6
Views: 855

Re: Tartric Acid crystals

Super!
by hkv
Sat Feb 03, 2018 9:50 pm
Forum: Pictures and Videos
Topic: Pyrrhocoris apterus
Replies: 8
Views: 1191

Re: Pyrrhocoris apterus

Super! Fantastic details and colors! Great work!
by hkv
Fri Feb 02, 2018 10:13 am
Forum: Beginner's corner
Topic: DIC microscopy
Replies: 5
Views: 1159

Re: DIC microscopy

Intersting point. I always say "DICK". Not D-I-C.
by hkv
Thu Feb 01, 2018 8:07 pm
Forum: Pictures and Videos
Topic: Copepod, Amoeba and Algae
Replies: 14
Views: 1448

Re: Copepod, Amoeba and Algae

Thanks Francisco and Jim!