MicrobeHunter.com Microscopy Forum

I'd be interested.

Hi, any ideas how to adapt a BX stage (u-svrd-2) to BH2 substage? Thanks Making some corrections to the BH2 substage numbers which I had mentioned needed to be double checked The bearing pad idea mentioned below with the correct BH2 substage diameter would be 8.5mm thick. I have not tried this, but...

qanunji wrote: ↑

Thu May 06, 2021 8:45 am

Hi,
any ideas how to adapt a BX stage (u-svrd-2) to BH2 substage?
Thanks

I have the BH2 and BX subsages, but the older ones are in storage someplace. What are the dimensions of the BH2 substage again? I think it was smaller in diameter and bit taller than the BX.

Testing paints on a scuffed steel surface to make some mag tags for a filter cube turret.

Might try a primer coat to get the black to hold better. Even with a sanded surface the black scratches off too easily. Note the green glow under blue light.

Oh no this is different from the apodizing experiments of another poster. Here we are trying to assemble a phase plate with phase retarding film set at right angles plus polarizing filter on the light source. Proof of concept worked ok now on to refinement. Sorry. I should have checked. I thought y...

I think you've been talking about this in another thread. It sounded like you wanted to add rings on the top lens of some non-PH objectives but do the rings in such a way as to have 50% transparency edges to help hide the phase contrast halo issue. I was think of putting the rings on a BK7 window, a...

Greg Howald wrote: ↑

Mon Aug 09, 2021 5:59 am

Looks interesting. Makes me wonder how it might work as the top light on my metallurgical scope.

I might try it with some mini-inverted Unitrons I'm going to sell.

So I tested the LED lamp on an AX70 using an LGAD adapter -- reflectance only. Have not tried transmittance. It fits in, but needs to go in further to make the aperture and field stops work correctly by properly lining up the conjugate planes. Intensity surprisingly is not an issue. The real issue i...

Thorlabs sell DIC prisms but, of course, everything from them is expensive! A Nikon N2 Condenser prism is about £908 with tax and a 20x prism slider is the same. So starter Nomarski DIC parts for £1800.... Tempting. If anyone knows of another source for less, I'd obviously be interested :) Maybe th...

Came across this listing for a Leitz EF 10x objective with a "phase contrast insert": https://www.ebay.com/itm/384310270761?epid=1725023138&hash=item597aad5b29:g:0CEAAOSw995hCXFu I don't see how that insert could possibly work for phase contrast. Does anyone know what it really is? For it to be a L...

Will polarized light run through and properly cross-polarize given a path of lenses like those in an epi that might introduce barrel distortion, and who knows, maybe Olympus distresses the glass when they make their lamp to epi lenses. A BX61 RLAA has a heavily curved lens aimed towards the lamp at ...

The angle was wrong in the file, so I created a separate file for RMS with 55 degrees. <?xml version="1.0" encoding="UTF-8"?> <ThreadType> <Name>Imperial Microscopy threads</Name> <CustomName>RMS Imperial Microscopy Threads</CustomName> <Unit>in</Unit> <Angle>55</Angle> <SortOrder>5</SortOrder> <Ext...

Ben Krasnow for his Applied Science channel says he uses a free license of Resolve: https://youtu.be/ihbYtxaEDSk?t=752

Olympus U-P4RE brass adjustable centering mount for an RMS objective, with adjusting pins and rubber plug when a fixed disk is used with no pins.

If you need to do threads in Fusion, this posting gives an xml file that is a must and so far appears to be working. https://forums.autodesk.com/t5/fusion-360-design-validate/how-can-i-make-an-internal-rms-royal-microscopy-society-0-8-quot/m-p/8888486/highlight/false https://knowledge.autodesk.com/s...

For the Olympus BX 'scopes the wired stages I think have no overhang when moved to the limit in the X-axis. This 'overhang' of the rack has caught me out a few times, and I'd really like a wire-operated stage which doesn't have this problem - but it's finding one for my BX50 and of course affording...

MichaelG. wrote: ↑

Sat Jul 24, 2021 5:06 am

This is a tentative response, Ted … because there is nothing currently pictured in your post

A wire system can be built [at reasonable cost, and without excessive friction] to be completely free of backlash.

MichaelG.

Fixed it. I changed the image format so the website likes it.

What is the advantage of a wired stage like the one pictured here. Apparently some people abhor the older style rack pinion design and only want a stage with a wire mechanism. If the gearing is done right, I don't set that the wire and pullies would be that much different in feel. Thanks, Ted [So th...

What does a Leica z6 with Rottermann look like?

To control the strain applied and not damage the surface, wouldn’t it be better to cut the poly sheet to have supports with more surface area that a rig can make contact with. For example, instead of press point from a rod, what about spike with these blue surfaces to interface with some metal that ...

Link is missing... I know I had it there, so I edited it above. What I thought was interesting is that he molded the lens and where the plastic was pushed in there was more stress. So he built into the plastic a level of stress. I wonder if that could be done but I guess the rig with the screws is ...

Breaking Taps had a video showing the fringing on a molded acrylic lens, which I think was actually polypropylene:

https://youtu.be/JNXgHbBIRYQ?t=1016

[I know I had added the link, but it disappeared. So added it.]

Cheap green laser will not have an IR filter. Inside they convert from 808nm to 532nm, and a spectrometer will show both peeks. The IR frequency is especially not eye safe. This video shows how to test without a spectrometer: https://www.youtube.com/watch?v=iR1Ku5dnbH8 So if you are cooking your sam...

Hi, I have an AX70 frame that I tested objective and filter cube turrets on, plus motored transmission filter. I haven't test sparking lamps just yet. But anyway, the main thing is that the vertical focus knobs are too loose on the right and disconnected on the left. The right side knob does move th...

<r>So I don't have a DIN retarder plate, but if they are 20mm wide, then the filter has to something down in the 17mm range.<br/> <br/> "Modern first order retardation plates are built in a frame having standardized DIN dimensions (6 × 20 millimeters) that will enable their use in a variety of micro...

For the filters like the analyzer and the filter cubes in a BX setup, a 25mm filter diameter is used. Now the AN does a 5 degree slant for the polarizer glass to minimize some reflection, so it's light path diameter is actually elliptical, cut down to just under 24mm. So clearly Olympus didn't reall...

Never heard of chemical gardens before. Interesting:

https://phys.org/news/2014-11-d-chemica ... video.html

https://www.youtube.com/watch?v=mjsFOSBFSG8

https://www.researchgate.net/figure/Qua ... _280122186

This book has a lot of interesting stuff in it. The sample is also assumed to rrtard light by about a quarter wave. I haven't yet managed to understand the arguments in Bennett's book for why this is true and the "Molecular Expressions" primer and related manufacturer-specific sites don't really ex...

patta wrote: ↑

Thu Jul 15, 2021 8:36 am

Also posts #6 (book link, pag. 87) and #11 plz

Cool. For some reason I did not see those posts till just now. The forum UI was hiding it from me.

Thanks,
Ted

I wouldn't retrofit this setup. The halogen bulbs are cheap and easy to source and give off good light. My second choice is retrofitting a fiber optic light guide from a 150w source. Retrodiode is good but I'm not sure about the color temperature, or if I'd want to use a pwm-dimmed LED for photogra...