Search found 223 matches

by ImperatorRex
Sat Aug 31, 2019 8:18 am
Forum: Pictures and Videos
Topic: Nitzschia sigma
Replies: 17
Views: 1361

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: 879

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: 2646

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: 2646

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: 7689

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: 1622

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: 1622

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: 2179

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: 2881

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: 2881

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: 1339

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: 2725

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: 2725

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: 2725

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: 2725

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: 820

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: 851

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: 1110

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: 1110

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: 1110

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: 2496

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: 30
Views: 11787

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: 30
Views: 11787

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: 76
Views: 24914

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!
by ImperatorRex
Fri May 24, 2019 4:31 pm
Forum: Beginner's corner
Topic: Chinese microscopes
Replies: 51
Views: 5780

Re: Chinese microscopes

Hi Dave,
wow, really impressive fotos on your website. I like especially the Astro fotos - they are brilliant!
Jochen
by ImperatorRex
Sun Mar 10, 2019 6:02 am
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 76
Views: 24914

Re: My Zeiss Microscopes

Thanks zzffnn for sharing this good example. Having a semi permeable mirror directly over the field iris is a nice setup. Even just using a object carrier slide somehow works as a beamer splitter, of coarse at a lesser efficiency I think it is then more or less a kind of critical illumination for th...
by ImperatorRex
Sat Mar 09, 2019 8:51 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 76
Views: 24914

Re: My Zeiss Microscopes

Hi, I think it does not matter from what side the light enters, transmission will alway be 50%. Have a look here https://www.edmundoptics.de/f/Broadband-Non-Polarizing-Cube-Beamsplitters/12627/ In the middle you will find an illustration how such a prism works. Edit: sorry, you will need to click on...
by ImperatorRex
Sat Mar 09, 2019 8:30 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 76
Views: 24914

Re: My Zeiss Microscopes

Hi 75RR, actually you would get 50 % of the light from each side with this split cube. But I wonder if you cannot unscrew the tellan lenses to remove? (use the black plastic riffled circle thing to get some grip to unscrew). You do not need the tellan lense, it would be important for tube lenght for...
by ImperatorRex
Sat Mar 09, 2019 7:22 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 76
Views: 24914

Re: My Zeiss Microscopes

Hi 75RR. Very interested in the splitter cube that you are using. Somehow looks like the the "discussion" cube where you could connect two tube heads? In this case the cube would have tellan lense optics? How well does this then work with the Lamp housing? I made some tests where I have removed the ...
by ImperatorRex
Sat Mar 09, 2019 1:26 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 76
Views: 24914

Re: My Zeiss Microscopes

A micro-flash is a great thing if you want to make sharp photos, since it "freezes" any movement. For the Zeiss Standard and inverse IM35 I have previously pesented such a flash device Zeiss Standard: http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=24&t=5930#p53445 Zeiss IM35: http://w...