MicrobeHunter.com Microscopy Forum

nice scope

Here is a photograph of it being used in conjunction with photographic projectors

And thank you, apochronaut. I have been meaning to test a triple alliance df condenser to see if it is any different than the later ones and this trick may come in handy.

Oh I was speaking to pattas earlier post about the expense of app objectives along with the wish about all app objectives having irises. Also, hello what's this about a coke can Cobb slide? Now that's a diy project with some promise...

Also you can use a funnel stop on lots of high na objectives without an iris, works well even with paraboloid condensers which can be had by the bushel used.

I think you might have the difference in NA between achromat and more highly corrected objectives backwards. With a 100x objective design you would start at NA 1.4, then drop it down after you realize the design of an achromat will throttle the color resolution anyway and you might as.well get a lit...

You can make a thin slide act like a thicker one with a more viscous immersion oil applied to the bottom

I think it's kind of neat I am always worried about centricity

I had thought those glasses meant a large amount of relief, more than 20mm for example. The stock eyepieces with the swift may already be able to accommodate glasses. It is a popular model, so someone probably could say if this is true.

Not sure I understand the question yet. What would you expect the fovs to be? It might require a little bit of knowledge of the ray path, how the eyepiece picks up the image, and the camera sensor size.

I am doing a bit of reading on early twentieth century ripolin formulations and here I think some.anachronism is for the best. Blown oil and copal admixtures, diterpene resins and maybe some lead for good measure.

If you like the brass then clear shellac is traditional. You can rub on the shellac or spray it then fume in alcohol.

All the old grease I see has a green rime I would assume from the copper in the brass

Every 160 lens needs the correct eyepiece. Some are reasonably close matches like some Zeiss and Nikon hk but some are not like Zeiss and Nikon cf.

Immersion oil has the same ri as the slip so as long as you have the working distance you can use or not use

As featured here, Bram ? http://www.emcgrath.com/catalog/images/LAB/Micro/LBR248.pdf … or did they do something else [more integrated] ? MichaelG. Yes. Although most of the objectives pictured are the usual, I believe you can see one of the special ones on page 3 of this pamphlet. The illuminator r...

Unitron had a similar objective with a ring of lights built in, of which I have a working example. It was called the unipak ring illuminator.

I bought .17 if for nothing else they break less frequently

I believe it is because routine lab work often ends up with a thin layer between the cover slip and sample, so the slip is made thinner to compensate. It's also not noticeable until NA gets a kve the .6 or .65 of your typical 40x lab objective. For these high dry objectives I have found that coversl...

The plan 2.5x 160mm is a good lens. I have it on a little field scope and it's.quite.sharp. A bit low for.diatom picking though.

A bulb which creates white light through fluorescence will not create uv light that makes other things fluoresce. There may have been uv emitting (black light) ring bulbs, but in the main this kind of fixture was used for regular reflected brightfield. There were these things called "corvascopes" us...

I've got quite an extensive collection of bonne maman labware myself. Their advent calendar comes with 25 tiny jars perfect for sampling.

I have an extensive set of a few hundred slides from the everglades and Okefenokee from the estate of an palynologist this way . Fascinating, but make sure what you're getting is labeled!

I would not use those same grow lights for observation, clearly.

I think it is slightly noticeable when using better corrected objectives, especially at the higher powers. For achromat objectives I don't notice much difference.

Don't forget the Joro spiders, which have completely infiltrated my part of the state

Well it's a camera, so the magnification is going to depend on the size of your computer screen or the eventual print. The idea behind camera adapters is to size the image onto the camera's sensor/ film. Most DSLRs will be able to do a good job capturing the resolution from most of the image circle ...

Microscopes do not lose accuracy from use!!

I think the problem with this device as well as the Heine is that considering an objective, you don't need or want a continuously variable df patch or phase ring. Rather, you want the correctly sized patch or phase ring. Df condensers on the used market are common and cheap. Aside from the beautiful...

That's a tidy bit of kit there apo