MicrobeHunter.com Microscopy Forum

Re: SF reference.
I believe Crater Eddie is referring to "the fullness of time" by Kate Wilhelm. One of my favourite writers.

Rodney: I made a thin section of a shark's tooth and posted it on the fossil form. The Fossil Forum Shark's teeth are not particularly good subjects for a thin section. The teeth tend to be curved on both surfaces leaving a very thin cross section to obtain a flat surface. I made a thin section, but...

Beautiful.
The specimens look like an advertisement for jewelry.

Number 2 in the Gekko Rocks Series is a thin section of Olivine Nephelinite (Miocene) from the Limberg Sasbach region of Germany. This is the rock before it was ground down to a thickness of 60 microns. Olivine.jpg The thin section of Olivine Nephelinite shows a lot of fracturing and twinning. Click...

Thanks Gekko: I quite liked making the first four thin sections. The next four are ready for slicing. I was quite apprehensive about what would show under the microscope. I have looked at two, the next two will be photographed tomorrow. Yes, the Nikon E200 is new. I have only briefly looked at some ...

Many thanks go out to Gekko who sent me eight rocks that I could deconstruct into thin sections. Kentallenite is the first in a series of eight thin sections. Four have been completed and will have their world premiere on this forum. The remaining four hopefully will be completed in the fullness of ...

In all cases the polished rock looks beautiful. In many cases the raw rock looks better than a thin section. In some cases the thin section even outshines the polished gem. Presented here are four rocks and their thin sections. I was told in no uncertain words I could not buy the gems. The four rock...

I have a similar design microscope that was made in India.
It is the polarizing version. Now since retired to the microscope Hell.
It never was a never very good polarizing microscope. It was damaged during a transit and repair costs would have vastly exceeded its value.

JimT:
I am helping the economy is two ways.
Buying gasoline on this road trip.
Buying a Leica DM-300 to better see the air bubble in my toothpaste.

Yes, they could be air bubbles, but my science fiction oriented mind would like to believe they are something else. MY scientific method was to smear some toothpaste along a slide with another glass slide. Lay a cover glass over it and place a weight on the top for about an hour. I am quite sure Sop...

JimT: Thin sections are the only thing I know how to do. Well. other than helping the economy. In a previous post Gekko did a presentation on toothpaste. To show you my advanced skills on messing up biological things this is my attempt at Colgate gel toothpaste from the tube. No water. The question ...

Tricky to say, but easy to look at.
A sedimentary rock containing lots of clay and fine grains of quartz sand.
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I just came back from the hospital ER after the heart attack I had reading the prices on DIC microscopes.

I shall try the DIY DIC stop shown in the article you posted.

To my untrained eye and a profiled monitor, I would select photo 1 9mm).

JimT How can you have a DIC filter WITHOUT a polarizer and an analyser? My understanding is you must have an analyser , prism, DIC condenser w/prism and a polarizer in the light path for a DIC configuration. Your photos do not look like what I would expect a DIC photo to look like. Could you describ...

The presntation shows the effects that five Darkfield stops have when using a 4x objective. According to a reliable source Recommended Darkfield stop sizes the correct stop for a 4x objective is between 8-14mm. The five Darkfield stops in the presentation are 9mm, 12mm, 13mm, 17mm and 22mm. With eac...

apochronaut Thank you for the detailed information. The only original parts left of the Bausch & Lomb microscope are the arm and focusing rack, tube and three obj. head and the base stage. The B&L came with three eyepieces, 5, 10 & 15x, four obj. 4, 10, 49 & a 100x oil and a plano/concave mirror. Th...

JimT Yes, all photos are shot in RAW mode with the exception of stacks. I use CombineZP and it does not accept RAW files. Stitching is done with Microsoft ICE and it accepts RAW files. The RAW files from the Canon 5D are approx 18MB and minimum compression JPEGs are approx. 9-12MB. I have oodles of ...

As a matter of habit I do a white balance every time I start and change the illumination level. LED or Halogen.

Yes, the illumination is now quite uniform. Placing the diffuser higher was the answer.
Thank you.

When you have lemons, make lemonade. I took a photo using a 40x objective on the Bausch & Lomb microscope and inadvertently moved the filter holder into the light path. When I looked at the photo I thought it looked a bit like oblique lighting. So I moved the filter holder out three quarters of the ...

Gekko suggested placing the diffuser under the condenser, Essentially moving it above the intense light source. To accomplish this without using the filter holder, I placed the filter in a set of macro lens rings. Therefore, the diffuser is now called a "gekko". P1010773.jpg P1010774.jpg HobbySand_1...

The AO Sixty is a pretty basic microscope, even for a first time buyer. With only two objectives, a fixed disk size aperture and no condenser, I know I would become flustered while trying to duplicate many of the posts on this forum. For less than $260.00 CDN you can buy a new binocular microscope w...

An here is an improved gekko diffusion filter just 18mm above the LED convex lens.
RAW image, no adjustments

For the Labomed, the top condenser is out and raised to its maximum position. The condenser aperture is stopped down very slightly (until the edges show shadow, then backed off) and the field aperture is adjusted for best contrast resolution. For the Bausch & Lomb, the condenser is at its highest po...

Very nice.
Photo 1 would make a nice pattern for a tartan.

The differences between OMAX and Amscope are academic. They are essentially one and the same.
Microscopenet.com sells OMAX and Amscope on the same page. The parent come is the same.

This time I used the same camera, Canon XS (1000D), OMAX 2.5x adapter and a commercially prepared Helianthus stem specimen. The microscopes used were a Labomed Infinity PLAN Polarizing scope and a upgraded vintage Bausch & Lomb. The obj. were PLAN 4x made in China. The difference being the Labomed 4...

The Canon software, EOS Utilities, has a custom white balance function that it stores in the camera. Thus, two cameras, different light sources, separate settings. The White Balance function is similar to Photoshop's. Using the EOS utilities, move the specimen out of the light path, remove the analy...

All my experience with polarizers is with my microscope. It has a removable analyzer and a polarizer that is part of the condenser, thus not removable from the light path. The light travels through the very thin, 30-90 micron slice. At 30 microns the crystal thickness is 150 times too thick to see t...

The CA in the B&L, or most of it, was removed in Lightroom. No CA was removed from the Labomed. These are the RAW CR2 images resampled down to 640 and JPEG The B&L has a 10w LED as a light source and the Labomed a 100w Halogen. Gabbro1_XSOB_4x_002.jpg Gabbro1_5MLP_2x_100.jpg P.S. I will, grudgingly,...