Search found 308 matches

by ImperatorRex
Fri Jul 10, 2020 2:51 pm
Forum: Microscopes and optics
Topic: Comparison of AmScope's Plan & Non-Plan Objectives
Replies: 16
Views: 179

Re: Comparison of AmScope's Plan & Non-Plan Objectives

Best would be to use a kind of "mash" or specimen with lines for a comparison. Example ist here: http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=24&t=5930&start=60#p71902 But this of coarse raises the question where to get such. But maybe somebody has another idea? Micrometer slides ar...
by ImperatorRex
Fri Jul 10, 2020 2:28 pm
Forum: Microscopes and optics
Topic: Roughly when did microscope manufacturers stop making their own glass?
Replies: 9
Views: 117

Re: Roughly when did microscope manufacturers stop making their own glass?

I'm guessing that there is a sand resource of a specific quality near to Wetzlar and Jena too, that prompted the origins of those areas as optical centers. Sounds logical. But the german optical manufacturers where founded back to mid. of the 19th century. All the optical glas was imported from Eng...
by ImperatorRex
Thu Jul 09, 2020 4:07 am
Forum: For forum members who want to buy and sell equipment
Topic: Wanted: Olympus U-CA Magnification Changer for BX
Replies: 0
Views: 29

Wanted: Olympus U-CA Magnification Changer for BX

Maybe somebody can offer me a magnification changer from Olympus (BX-Series)? Pls. sent me a PM.
(Pls. do not post links to ebay auctions here). Thanks in advance for any offer.
by ImperatorRex
Wed Jul 01, 2020 7:14 pm
Forum: Pictures and Videos
Topic: Dinoflagellate
Replies: 8
Views: 410

Re: Dinoflagellate

Very well done 75RR! Great catch of the different panes.
Thanks for your docu.
by ImperatorRex
Mon Jun 29, 2020 4:21 pm
Forum: For forum members who want to buy and sell equipment
Topic: Zeiss Universal or Phomi "Large Field Nosepiece"
Replies: 0
Views: 270

Zeiss Universal or Phomi "Large Field Nosepiece"

I am selling a rare Zeiss Universal or Phomi "Large Field Nosepiece" in excellent condition.

Please have a look on Ebay or contact me if your are interested:
https://www.ebay.de/itm/124224238586?ss ... 1555.l2649
by ImperatorRex
Mon Jun 29, 2020 4:11 pm
Forum: Microscopes and optics
Topic: Best DIC options?
Replies: 57
Views: 1414

Re: Best DIC options?

Does anyone know about what plan field sizes Zeiss supported in the various eras? My impression is that they didn't get to 20mm in objectives, prisms, heads, etc. until somewhat later in the game?? It seems that even the old Zeiss West "finite" Plan Objectives itself were designed with a "reserve" ...
by ImperatorRex
Sun Jun 28, 2020 8:33 pm
Forum: Microscopes and optics
Topic: Best DIC options?
Replies: 57
Views: 1414

Re: Best DIC options?

Was wondering if they were the same. These are the ones on my 46 52 85, not standard then? They are the same, just different kind of numbering. Maybe Zeiss recognized that all the different prism numbers are just confusing, so printing matching condensor numbers on the prisms would be more transpar...
by ImperatorRex
Sun Jun 28, 2020 6:19 pm
Forum: Microscopes and optics
Topic: Best DIC options?
Replies: 57
Views: 1414

Re: Best DIC options?

some more details to add: https://up.picr.de/38893874qh.jpg 46 52 85 - is the condensor with the 1.4 n.A Frontlense and the matching Wollastan prisms. 46 52 73 - is the condensor with the 0.63 n.A Frontlense and the matching Wollastan prisms. Both condensors could be installed on conventional or inv...
by ImperatorRex
Sat Jun 27, 2020 8:29 am
Forum: Microscopes and optics
Topic: Best DIC options?
Replies: 57
Views: 1414

Re: Best DIC options?

75RR wrote:
Sat Jun 27, 2020 6:53 am
That is an unhelpful numbering sequence :)
Indeed, the later (newer) invitinite Zeiss scope seem to have smaller numbers than the old finite stuff.
by ImperatorRex
Sat Jun 27, 2020 5:53 am
Forum: Microscopes and optics
Topic: Best DIC options?
Replies: 57
Views: 1414

Re: Best DIC options?

75RR wrote:
Sat Jun 27, 2020 5:01 am
Might be a mix of generations. ....
Image
The very early ZEISS Axio (..skopes) had an DIC Condenser 44 52 48 - similiar looking as on the photo.
by ImperatorRex
Thu Jun 25, 2020 8:35 pm
Forum: Microscopes and optics
Topic: Best DIC options?
Replies: 57
Views: 1414

Re: Best DIC options?

Some notes on Olympus BX DIC: there are 3 different options available: - high Contrast DIC - standard DIC - high resolution DIC So it really depents what specimen you have to get best results: Great comparison and article on the Olympus DIC (standard versus high resolution) was just recently present...
by ImperatorRex
Fri Jun 19, 2020 4:44 pm
Forum: Pictures and Videos
Topic: Prorocentrum lima video
Replies: 4
Views: 557

Re: Prorocentrum lima video

Very nice video 75RR. You always find stuff new interesting stuff :-) Wonder if there are really bacteria activities inside? Maybe a closer look at, e.g. with leass fluid layer could clarify. Could also be some metabolic products - e.g. when spotting closterium or other algae, you see this kind of m...
by ImperatorRex
Fri Jun 19, 2020 9:37 am
Forum: Microscopes and optics
Topic: Zeiss Standard - help
Replies: 4
Views: 414

Re: Zeiss Standard - help

Well explained Bob. In addition a photo will help to outline the details:
https://www.mikroskopie-forum.de/index.php?topic=4004.0
by ImperatorRex
Thu Jun 18, 2020 9:22 am
Forum: Identification help
Topic: Amoeba? (Marine sample)
Replies: 8
Views: 627

Re: Amoeba? (Marine sample)

Really strange thing 75RR. Would be important to see if the object moves or change the pseudopodia.
by ImperatorRex
Sun Jun 14, 2020 5:27 pm
Forum: For forum members who want to buy and sell equipment
Topic: Cooke Troughton and Simms - CTS Eyepieces 10x comp
Replies: 0
Views: 265

Cooke Troughton and Simms - CTS Eyepieces 10x comp

If somebody is interested in a pair of Eypepieces from CTS 10x comp may just contact me.
by ImperatorRex
Fri Jun 12, 2020 10:52 pm
Forum: Illumination Techniques
Topic: Could i get a cooler bulb?
Replies: 34
Views: 1063

Re: Could i get a cooler bulb?

MichaelG. wrote:
Fri Jun 12, 2020 8:09 pm
I’m guessing that Jochen was thinking ‘cooler’ in the sense of colour temperature.
Correct Michael. Did not thought that there are temperature issues.
by ImperatorRex
Fri Jun 12, 2020 2:24 pm
Forum: Illumination Techniques
Topic: Could i get a cooler bulb?
Replies: 34
Views: 1063

Re: Could i get a cooler bulb?

Simple solution would probabely to place a blue filter glas into the filter holder (under the condenser) or maybe on top of the field diaphragma.
by ImperatorRex
Sun Jun 07, 2020 2:06 pm
Forum: Pictures and Videos
Topic: First attempts at arranging diatoms
Replies: 39
Views: 1214

Re: First attempts at arranging diatoms

Hi Bob, no, did not measure one complete box. Somehow my experience is, that within one batch (even more than one box) of cover glases it does not vary much, rather consistent. Do not know why, maybe it is the way those glases are manufactured or it is the brand I am using? So it would not work out ...
by ImperatorRex
Sat Jun 06, 2020 8:14 pm
Forum: Pictures and Videos
Topic: First attempts at arranging diatoms
Replies: 39
Views: 1214

Re: First attempts at arranging diatoms

here is a photo of my measurement clock:

Image

Very nice device "made in GDR (DDR)"
by ImperatorRex
Sat May 30, 2020 4:54 am
Forum: Pictures and Videos
Topic: Campylodiscus decorus
Replies: 8
Views: 642

Re: Campylodiscus decorus

Very nice stacks 75RR! I enoy the additional info and reference that you have provided, thank you very much. A bit difficult for me to understand the real geometry, so I browsed for other illustrations in the internet and found the below very helpful: http://www.lenaturaliste.net/forum/galerie/image...
by ImperatorRex
Thu May 28, 2020 8:28 pm
Forum: Home-made microscope adaptations
Topic: LED Conversion of a BH2 Trinocular
Replies: 8
Views: 403

Re: LED Conversion of a BH2 Trinocular

Another option for a simple LED exchange on Olympus BH2 (orginally 6 V 20 Watt) is decribed here:
https://www.mikroskopie-forum.de/index. ... ic=35833.0
by ImperatorRex
Tue May 26, 2020 11:13 am
Forum: Pictures and Videos
Topic: Volvox colony
Replies: 12
Views: 401

Re: Volvox colony

Congrats - I never catched Volvox!
by ImperatorRex
Sat May 23, 2020 5:57 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 91
Views: 43677

Re: Olympus BX - DIY LED replacement for the HBO 100W high pressure Mercury burner

Thank you Hobbyst46. Spelling corrected, very appreciate your advise.
Guess I had the epi- field aperture fully opened. Will need to check next time.
by ImperatorRex
Sat May 23, 2020 5:23 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 91
Views: 43677

Olympus BX - DIY LED replacement for the HBO 100W high pressure Mercury burner

Hi, once more another simple DYI LED solution for the Olympus BX. This time it is intended to replace the HBO high pressure Hg 100W burner used for incident light fluorescence. Maybe you can apply a similiar solution also on other microscope stands? My plan was to fit an UV LED toghether with a norm...
by ImperatorRex
Sat May 23, 2020 4:38 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 91
Views: 43677

Re: My Zeiss Microscopes

Hobbyst46/75RR,
right...Polfilter may be replaced, but the eyelight not. Safety first!
by ImperatorRex
Fri May 22, 2020 5:35 pm
Forum: Pictures and Videos
Topic: Actinocyclus subtilis video
Replies: 6
Views: 261

Re: Actinocyclus subtilis video

Thank you 75RR. Interesting to observe this living diatome!
by ImperatorRex
Fri May 22, 2020 1:55 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 91
Views: 43677

Olympus BX - DIY - LED retrofit with integrated flash

Flash is working very well ;-) Something you may consider if you apply similiar solution: I have been told that xenon tubes emit quite some portion of UV light: http://www.allaboutsymbian.com/features/images/camnitty/camtech3.jpg I had some doubt if the short flash light duration may ever cause some...
by ImperatorRex
Mon May 18, 2020 7:18 pm
Forum: Microscopes and optics
Topic: Zeiss DIC Prism
Replies: 3
Views: 181

Re: Zeiss DIC Prism

The prismn actually does not look so bad. It is just peripherial delamination anyway. My personal experience is, that delaminated condensor prismn perform without any visible difference compared to none delaminated. The Objective slider prisms seem to be more critical.
by ImperatorRex
Sat May 16, 2020 9:48 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 91
Views: 43677

Olympus BX - DIY - LED retrofit with integrated flash

75RR wrote:
Sat May 16, 2020 9:26 pm
Is the LED sitting directly behind or just a bit above/below the flash tube?
The flash tube is as close as possible, just a little bit above the LED.
by ImperatorRex
Sat May 16, 2020 8:14 pm
Forum: My microscope
Topic: My Zeiss Microscopes
Replies: 91
Views: 43677

Olympus BX - DIY - LED retrofit with integrated flash

Simple conversion of the 100W BX Lamp housing to a LED solution with option to fit a flash bulb. The BX lamp housing can be easily converted back into its original status if such is required. Similiar solution may be applicable also for other microscopes? Reasons for the conversion: So far I used a ...