Search found 289 matches

by ImperatorRex
Mon Sep 02, 2019 3:19 pm
Forum: My microscope
Topic: Zeiss STD 18/W/L Nosepiece turret options
Replies: 16
Views: 3249

Re: Zeiss STD 18/W/L Nosepiece turret options

Hi 75RR, I personally never tried this on a 7 nosepiece, so I cannot provide the details where exactely the collision occures (I just remember such a comment from a past forum thread). Looking at a 5x nosepiece with DIC stools I could imagine that space may become an issue if distance between holes ...
by ImperatorRex
Mon Sep 02, 2019 1:29 pm
Forum: Microscopes and optics
Topic: Which microscope is this nosepiece for?
Replies: 7
Views: 1111

Re: Which microscope is this nosepiece for?

...and there is a nice multi-immerision objective fitted! :D
by ImperatorRex
Mon Sep 02, 2019 1:24 pm
Forum: My microscope
Topic: Zeiss STD 18/W/L Nosepiece turret options
Replies: 16
Views: 3249

Re: Zeiss STD 18/W/L Nosepiece turret options

One handicap of the 7 place nosepiece is also that it is to packed and therefore the DIC stools cannot be installed on such a nosepiece.
by ImperatorRex
Mon Sep 02, 2019 5:44 am
Forum: Microscopes and optics
Topic: Infinity corrected microscopes
Replies: 13
Views: 1709

Re: Infinity corrected microscopes

Scarodactyl wrote: in either system type you can theoretically do direct projection without extra optics (beyond the tube lens if needed), but it is only sometimes practical depending on the microscope system. Thanks Scarodactyl. As far as I know the issue with the finitey system is that oculars ar...
by ImperatorRex
Sun Sep 01, 2019 10:08 am
Forum: Microscopes and optics
Topic: Fine focus gone ...
Replies: 30
Views: 3462

Re: Fine focus gone ...

Hi 75RR,
indeed the fine focus of the Zeiss WL is absolutely stunning. Not just the mechanical accuracy, but also kosmetically and ergonomically the metall knobs are so nice.
by ImperatorRex
Sat Aug 31, 2019 8:25 am
Forum: Pictures and Videos
Topic: Prorocentrum sp
Replies: 4
Views: 815

Re: Prorocentrum sp

Like the video also very much, thank you 75RR for sharing.
Did you also watch the sample drying out after a while? Usually such is very usefull respectively for the high n.A. Objectives to catch details of the organells & internals.
by ImperatorRex
Sat Aug 31, 2019 8:18 am
Forum: Pictures and Videos
Topic: Nitzschia sigma
Replies: 17
Views: 2466

Re: Nitzschia sigma

Congrats 75RR - very well done :-)
by ImperatorRex
Sat Aug 31, 2019 7:46 am
Forum: Microscopes and optics
Topic: Infinity corrected microscopes
Replies: 13
Views: 1709

Re: Infinity corrected microscopes

Maybe one reason for the infinity system that not has been mentioned: In particular, infinite system photography offers the possibility of directly imaging the intermediate image on the sensor - without relay optics, photo eyepieces or projective lenses. So an additional source of dust/dirt is elimi...
by ImperatorRex
Mon Aug 19, 2019 4:19 pm
Forum: Microscopes and optics
Topic: Which model of Carl Zeiss Standard is this?
Replies: 49
Views: 4398

Re: Which model of Carl Zeiss Standard is this?

A question if I may: that link shows a special adjastable pin-wrench. Is it available ? The owner of the tool got it from a Zeiss Coworker, so not clear if it is commercially available. Anyway costs could become an issue ;) There was an interesting forum thread where a nice forum member offered to ...
by ImperatorRex
Sun Aug 18, 2019 7:10 pm
Forum: Microscopes and optics
Topic: Which model of Carl Zeiss Standard is this?
Replies: 49
Views: 4398

Re: Which model of Carl Zeiss Standard is this?

In case you intent to dismantle the noispiece, below links may help: https://www.mikroskopie-forum.de/index.php?topic=4007.0 https://www.mikroskopie-forum.de/index.php?topic=4005.0 You may try google translator... It is not rocket science, just needs some patience and time to do. You also may find t...
by ImperatorRex
Sun Jul 28, 2019 4:59 pm
Forum: Microscopes and optics
Topic: Field of View - Zeiss Universal vs. Leitz Orthoplan
Replies: 10
Views: 8334

Re: Field of View - Zeiss Universal vs. Leitz Orthoplan

I created a comparision for the Zeiss Universal / Phomi:
Normal field of view versus the FOV with large field objective turret. It really makes a big difference.

Image
by ImperatorRex
Sat Jul 27, 2019 5:02 am
Forum: Pictures and Videos
Topic: Sauerkraut for a mycologist.
Replies: 13
Views: 2364

Re: Sauerkraut for a mycologist.

I found the following also interesting: Various molds, like milk mold (Oospora lactis) can make use of lactic acid as a source of food. In order to deplete the lactic acid they need much air, so they come only on the surface of the Sauerkraut to development. With the decrease of the lactic acid a de...
by ImperatorRex
Fri Jul 26, 2019 8:41 pm
Forum: Pictures and Videos
Topic: Sauerkraut for a mycologist.
Replies: 13
Views: 2364

Re: Sauerkraut for a mycologist.

Helmut Thaler in Mikrokosmos, 68. Jahrgang, 1979, Page 237: Translated from German: The technique of sauerkraut production is basically no different today than it was in the household one hundred and more years ago, even though this product has been produced on a large-scale industrial scale for dec...
by ImperatorRex
Sat Jul 13, 2019 4:27 am
Forum: Microscopes and optics
Topic: Unbranded NEW 4X Planachromate objective on a Zeiss Standard microscope
Replies: 32
Views: 4028

Re: Unbranded NEW 4X Planachromate objective on a Zeiss Standard microscope

... AFAIK, there are no Zeiss 4X objectives for the Standard. .... Well, actually there is a Zeiss Planapochromat 4/0,16. Very nice images, however working distance is only 2,5 mm compared to 4,9 mm of the Zeiss Planachromat 6,3/0,16. The Planapochromat 4/0,16 is occasionally sold on ebay, however ...
by ImperatorRex
Sat Jul 06, 2019 6:20 am
Forum: Microscopes and optics
Topic: Condenser correction types - how to test a condenser?
Replies: 42
Views: 5252

Re: Condenser correction types - how to test a condenser?

Comparison dry and oiled condenser. (Semiplan) F100x/1.25, objective oiled to slide - first image with a dry condenser, second with oiled condenser. Kemp 8 Form Test: Nitzschia sigma Illumination = COL using # 3 Phase annulus of rotary condenser. Hi 75RR, I wonder why the images look so different -...
by ImperatorRex
Wed Jul 03, 2019 8:19 pm
Forum: Microscopes and optics
Topic: Condenser correction types - how to test a condenser?
Replies: 42
Views: 5252

Re: Condenser correction types - how to test a condenser?

I have this different image on the field diaphragm too. What I don't know is whether it is safe to conclude that this leads to a better image quality of the object on the stage. I do not think it has negative impact on image quality, you simply need to open the field diaphragm a bit more, so the co...
by ImperatorRex
Fri Jun 21, 2019 8:21 pm
Forum: Beginner's corner
Topic: Do it yourself double cover slips to enable observations from both sides?
Replies: 6
Views: 1837

Re: Do it yourself double cover slips to enable observations from both sides?

I use 24x60mm cover glasses instead of object carrier glasses. Two of them make a perfekt sandwich that I put into into a frame made for the 76mm length to fit in any object carrier or stage. Have a look pls.: http://show.picr.de/32343749ju.jpg.html I use it for the inverted microscope, but sometime...
by ImperatorRex
Tue Jun 18, 2019 8:46 am
Forum: Camera systems and imaging
Topic: Using flash produces blurred images
Replies: 24
Views: 4367

Re: Using flash produces blurred images

Yes, the less power, the lesser flash duration. Switching the flash lamp position will better support that. The exposer time at the camera itself is not that critical, but if you leave the "pilot light/lamp" on you should probabely setup to 1/200s, so the dimed pilot light is not captured in the ima...
by ImperatorRex
Tue Jun 18, 2019 7:46 am
Forum: Camera systems and imaging
Topic: Using flash produces blurred images
Replies: 24
Views: 4367

Re: Using flash produces blurred images

Hi Wes, OK. Does the flash allows you control/set the flash power manually? I had a Speedlite 380 in the past and it does not allow, so it was one of the reason not to use anymore. ETTL mode is difficult to controle and start with. Maybe a quick check without the beam splitter, manually holding the ...
by ImperatorRex
Tue Jun 18, 2019 7:14 am
Forum: Camera systems and imaging
Topic: Using flash produces blurred images
Replies: 24
Views: 4367

Re: Using flash produces blurred images

Hi Wes, I would slowly start investigation of the issues. Since both fotos shows a kind of oblique illumination effect first try to figure out where this effect comes from. a) directly attach the lamp to the microscope without any Adapter. Then make fotos with Canon utilities with Life-view. Check t...
by ImperatorRex
Mon Jun 17, 2019 5:06 pm
Forum: Camera systems and imaging
Topic: Using flash produces blurred images
Replies: 24
Views: 4367

Re: Using flash produces blurred images

Hi Wes,
both fotos, lamp and flash seem to have a gradient. Was it oblique illumination? DIC.
Try to setup camera to 1/200s and not shorter. Also try the manual settings at Camera not ETTL. Anyway sharing the camera & flash setting would also help to clarify.
by ImperatorRex
Fri Jun 14, 2019 9:05 pm
Forum: Resources (online, books etc.)
Topic: A new microbial swimming style
Replies: 4
Views: 2602

A new microbial swimming style

Sebastian Hess and co-autors recently published below article...like to share the hyperlink & video info below: "Recently, we described a new unicellular microbe, named Idionectes vortex, which swims by a previously unreported mode of motility. During swimming, the flagellum of this microscopic euka...
by ImperatorRex
Sun Jun 09, 2019 4:42 pm
Forum: Pictures and Videos
Topic: Ciliate (Ophryoglena Sp.)
Replies: 3
Views: 1033

Re: Ciliate (Ophryoglena Sp.)

Nice Video 75RR.

Wes, the few orange-yellow globes are oil resevoirs.
by ImperatorRex
Sun Jun 09, 2019 9:09 am
Forum: Pictures and Videos
Topic: Lacrymaria olor - aka Swan Neck Animal
Replies: 8
Views: 1477

Re: Lacrymaria olor - aka Swan Neck Animal

Thanks Radazz & Wes Amazing find and a great video! When using your inverted scope for live specimens what sort of sample containers do you use? Pls. have look here: http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=24&t=5930#p53567 The micro-aquarium with 1mm thickness are very convenie...
by ImperatorRex
Sat Jun 08, 2019 2:20 pm
Forum: Pictures and Videos
Topic: Lacrymaria olor - aka Swan Neck Animal
Replies: 8
Views: 1477

Re: Lacrymaria olor - aka Swan Neck Animal

Thank you very much for all your nice comments :-) Indead it is inbelievable how such simple creatures with just one cell can do such a performance. at Hobbyst46: Zeiss IM35 inverted microscipe. Sections of the video recorded with Plan 6,3 / Plan 16 and finally the Planapo 25/0,65. Camera Adaption w...
by ImperatorRex
Sat Jun 08, 2019 7:54 am
Forum: Pictures and Videos
Topic: Lacrymaria olor - aka Swan Neck Animal
Replies: 8
Views: 1477

Lacrymaria olor - aka Swan Neck Animal

The protist Lacrymaria olor ("Swan neck tear") is notable for its ability to extend the anterior end of the cell up to 7 times its body length, and manipulate in many directions — even around obstacles — in order to capture its food. 1Ooe_ism_Fk Great fotos about this protist pls. check here: https:...
by ImperatorRex
Wed May 29, 2019 3:39 pm
Forum: Identification help
Topic: Algal structure full of moving dots
Replies: 5
Views: 4372

Re: Algal structure full of moving dots

Hi Josh, you mentioned the moving little dots. Difficult to judge because the foto does not show the details. However the algae may already be a bit damaged, since chlorophyl only partly fills the volume of the cell? So the moving dots may be bacteria that started to decompose the organic substrate?...
by ImperatorRex
Tue May 28, 2019 4:25 pm
Forum: My microscope
Topic: My Zeiss Photomicroscope III
Replies: 37
Views: 17134

Re: My Zeiss Photomicroscope III

Hi Jochen, Out of curiosity what would be a normal price range for a Stemi? I consider getting a stereoscope when my budget recovers from the DIC expenditure. Wes I only by second hand stuff. So I have bought for example my Zeiss Stemi III second hand (look here: http://www.microbehunter.com/micros...
by ImperatorRex
Sun May 26, 2019 7:06 pm
Forum: My microscope
Topic: My Zeiss Photomicroscope III
Replies: 37
Views: 17134

Re: My Zeiss Photomicroscope III

Hi Wes,
a Zeiss Inverted IM35 (or if you like the build in camera an Zeiss ICM405) and a Zeiss Stemi III (or IV) would fit very well to your other Zeiss inventory :-)
Jochen
by ImperatorRex
Sun May 26, 2019 6:58 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 91
Views: 41897

Re: My Zeiss Microscopes

Hi Wes,
before making the mechanical adaption just do a quick testing by fitting lights and flash by tape or by hand. You will then find out if light path is appropreate.
Quite a unconventional arrangemnt, but it is a beam splitter anyway.... :-) Good luck!