Search found 225 matches

by wstenberg
Tue Feb 11, 2020 5:25 pm
Forum: Introduce yourself
Topic: Greetings, Jeff in Texas here
Replies: 18
Views: 5347

Re: Greetings, Jeff in Texas here

BTW, sometime the PM doesn't work for new members.
by wstenberg
Tue Feb 11, 2020 3:53 pm
Forum: Introduce yourself
Topic: Greetings, Jeff in Texas here
Replies: 18
Views: 5347

Re: Greetings, Jeff in Texas here

BTW,
If you're near Dallas, I have a Zeiss Standard in your price range. Let me know if you want to look at it.
by wstenberg
Tue Feb 11, 2020 3:49 pm
Forum: Introduce yourself
Topic: Greetings, Jeff in Texas here
Replies: 18
Views: 5347

Re: Greetings, Jeff in Texas here

Welcome from another Texan.

You'll find a load of good advice and discussion here.

Glad to have you aboard.
by wstenberg
Mon Feb 03, 2020 8:50 pm
Forum: Microscopy accessories
Topic: Zeiss 3 way beam splitter - double image
Replies: 2
Views: 1890

Re: Zeiss 3 way beam splitter - double image

Michael,
Probably no one has ever had one of these open before. Difficult to guess what might be wrong. My guess is something has come loose or fallen off. Be sure to post if you figure it out.
by wstenberg
Mon Feb 03, 2020 8:47 pm
Forum: Introduce yourself
Topic: New here
Replies: 14
Views: 4981

Re: New here

Welcome Larry!
by wstenberg
Fri Jan 31, 2020 9:04 pm
Forum: Microscopes and optics
Topic: Zeiss Universal project
Replies: 22
Views: 9002

Re: Zeiss Universal project

The entire focusing block can be replaced. The prices on Ebay are usually too high, but you can get a reasonable one if you are patient, make some offers. Might be worth $100 or a little less. Perhaps this is easier than making new gears, depending on your gearmaking skills. It's the same focusing b...
by wstenberg
Thu Jan 30, 2020 12:14 am
Forum: For forum members who want to buy and sell equipment
Topic: Zeiss Microscope for new users
Replies: 0
Views: 6651

Zeiss Microscope for new users

I know it's difficult for beginners to get a good starter microscope... In the process of setting up my lab, I've accumulated enough Zeiss parts to fill several shelves. I have enough parts to put together 3 or 4 Zeiss Standard microscopes for beginners. Building on a Zeiss Standard stand, I can sem...
by wstenberg
Sun Jan 19, 2020 12:02 am
Forum: Beginner's corner
Topic: Zeiss Universal for Transmitted and Incident light microscopy
Replies: 8
Views: 1438

Re: Zeiss Universal for Transmitted and Incident light microscopy

I have a Universal, and there are nosepieces for a single objective as well as turrets for many objectives. It is very easy to switch out nosepieces and condensers when you want to change modes. Minutes or less. It's a popular microscope, and parts come up all the time. Not hard to find most of the ...
by wstenberg
Fri Dec 20, 2019 2:42 pm
Forum: Beginner's corner
Topic: Polarized light and retardation plates doubt
Replies: 1
Views: 590

Re: Polarized light and retardation plates doubt

OK, I don't know the answer, but at least one of my Zeiss condensers has a slot for a retardation plate. I have never actually tried to use it. Maybe I will experiment with it. I think image quality would be the same, as long as the plate is not coincident with the specimen conjugate plane. I'm inte...
by wstenberg
Sat Dec 14, 2019 3:46 pm
Forum: Beginner's corner
Topic: Microscope -Avian Disease's
Replies: 9
Views: 1156

Re: Microscope -Avian Disease's

Well, I like pigeons, I like microscopes, and I like bacteria... But there are problems with this plan. Bacteria are very small, even for a microscope. They are at the limit of resolution for a light microscope. You will be able to determine the basic shape of the bacteria, but that's about all. The...
by wstenberg
Fri Dec 06, 2019 2:02 am
Forum: For forum members who want to buy and sell equipment
Topic: Reichert field microscope on ebay
Replies: 1
Views: 920

Re: Reichert field microscope on ebay

nice!

I like it. I always to build something like that!
by wstenberg
Mon Dec 02, 2019 12:02 am
Forum: My microscope
Topic: Portable microscope!
Replies: 7
Views: 2706

Re: Portable microscope!

I have always wanted to try out one of these.
might be very handy on a camping trip.
I wonder if you could put it over a lightbox for viewing transmitted light samples?
by wstenberg
Thu Nov 28, 2019 11:16 pm
Forum: For forum members who want to buy and sell equipment
Topic: Zeiss Axiomat for sale
Replies: 4
Views: 2591

Re: Zeiss Axiomat for sale

I will be selling my old Axiomat. Please PM me if you are interested in owning this great microscope!
by wstenberg
Mon Nov 25, 2019 4:04 am
Forum: Beginner's corner
Topic: thinking out loud here - moral thoughts
Replies: 21
Views: 3358

Re: thinking out loud here - moral thoughts

No matter how kind you are to microbes, they will not reciprocate. They will still be happy to infect your brain or liver. If you decide to re-introduce them to the environment, they will be killed or eaten. In labs that I have worked in, there have been policies prohibiting release of microorganism...
by wstenberg
Thu Nov 14, 2019 3:53 am
Forum: Introduce yourself
Topic: Hello from England
Replies: 8
Views: 1354

Re: Hello from England

OK, I use an ancient set of bellows also. Mine are Ihagee from Germany. I have the Ihagee/M42 adapter as well as the M42/RMS. Everything fits fine. I use the Zeiss Luminar objectives. They have an adjustable diaphragm; I believe they were designed for applications such as this. Here's a picture of t...
by wstenberg
Tue Nov 12, 2019 9:37 pm
Forum: Introduce yourself
Topic: Greetings from the Mississippi Gulf Coast, USA
Replies: 6
Views: 1282

Re: Greetings from the Mississippi Gulf Coast, USA

Welcome to the forum DJT,

Looking forward to seeing the progress. Be sure to post photos as you make progress. You'll find a helpful group here on the forum.

And we say y'all in Texas, also.
by wstenberg
Thu Oct 31, 2019 9:27 pm
Forum: My microscope
Topic: A new microscope. Go big or go home.
Replies: 35
Views: 7959

Re: A new microscope. Go big or go home.

Yes, that slot is for the retardation plates. And the PH position for the optovar is the Bertrand lens. And, whatever you do, don't remove the optovar from the head by taking out the three covering screws and three alignment screws. It will never go back to its original position (from my personal ex...
by wstenberg
Tue Oct 29, 2019 10:31 pm
Forum: My microscope
Topic: A new microscope. Go big or go home.
Replies: 35
Views: 7959

Re: A new microscope. Go big or go home.

Beautiful Universal, in great condition! I'm attaching a photo of the light on my Universal along with a photo of the power supply. These are easily available and not too expensive. Make sure the plug on the illuminator and the socket on the power supply match. There are several illuminators that lo...
by wstenberg
Tue Oct 29, 2019 3:34 pm
Forum: My microscope
Topic: Zeiss incident light microscope
Replies: 4
Views: 4515

Re: Zeiss incident light microscope

This is great information. These little microscopes have always been a mystery to me. Now, I have a lot more information about them. It is still interesting that when these do come up for sale, they are never complete. The parts are difficult to find, even though I believe many of these were produce...
by wstenberg
Mon Oct 28, 2019 9:06 pm
Forum: My microscope
Topic: Zeiss incident light microscope
Replies: 4
Views: 4515

Re: Zeiss incident light microscope

Reinhard, OK, this is interesting!!! I have about 4 of these little beasts. They have found their way into my collection when searching for the bases and focusing racks (for use with my Zeiss Tessovar). None of mine are complete. I have been unable to find any owners manuals or information about the...
by wstenberg
Sun Oct 27, 2019 11:33 pm
Forum: Home-made microscope adaptations
Topic: Rot 1 plate adapter for Zeiss
Replies: 1
Views: 3544

Rot 1 plate adapter for Zeiss

I have two sizes of sliders for the Zeiss microscopes. The smaller ones fit in the Standard and the larger fit in the Universal.
I was home today with a cold, so I decided to make an adapter.
Took way too much time- still needs a pin on the bottom so it doesn't go in too far, but not tonight...
by wstenberg
Thu Oct 24, 2019 1:12 pm
Forum: My microscope
Topic: Zeiss Tessovar
Replies: 8
Views: 2479

Re: Zeiss Tessovar

Nice set-up!
Good to see another Tessovar, even if it's not within the borders of Texas!

Thanks for the information, and the excellent pictures of the Green bug.

Nice z-axis handle!
by wstenberg
Wed Oct 23, 2019 3:50 pm
Forum: Introduce yourself
Topic: Greetings from Germany
Replies: 7
Views: 1983

Re: Greetings from Germany

Welcome to the forum.
I look forward to seeing your Zeiss microscopes, and perhaps some photos of the work you are doing.
by wstenberg
Tue Oct 22, 2019 3:43 pm
Forum: Beginner's corner
Topic: Fusing glass slides
Replies: 23
Views: 4854

Re: Fusing glass slides

I'm not sure how they are making the cuvettes. It's costing more than a few hundred dollars each, and we had to order ten of them. It must be quite a process. Please look at he link below. It's very interesting to see the great variety of optical quartz products that they make. Some of them would ha...
by wstenberg
Tue Oct 22, 2019 12:14 am
Forum: Beginner's corner
Topic: Fusing glass slides
Replies: 23
Views: 4854

Re: Fusing glass slides

Thanks to everyone for the help and ideas. This wasn't really related to my hobby microscopes, but I thought it might be a problem of general interest to the group- and I certainly trust the judgement and experience of the folks here on the forum. Re: sight glasses- I didn't know you could buy these...
by wstenberg
Tue Oct 22, 2019 12:08 am
Forum: Beginner's corner
Topic: Am I doing something wrong?
Replies: 9
Views: 2185

Re: Am I doing something wrong?

Regarding cheek swabs... Certainly there are bacteria on the surface of the cheek, but this is not a good place to go hunting for them. The epithelial lining of the cheek is constantly shedding. This prevents bacteria from adhering. Some bacteria have methods of attaching, but this is not a hospitab...
by wstenberg
Mon Oct 14, 2019 12:55 pm
Forum: Home-made microscope adaptations
Topic: LEGO meets high-end microscopy
Replies: 2
Views: 2284

Re: LEGO meets high-end microscopy

Excellent. I'm always tinkering with similar projects. The light sheet microscope is an amazing instrument, but as you can see from you article, the problem is holding the specimen. Everyone is working on it, trying to push the boundaries of what the microscope can do. These people have some great i...
by wstenberg
Mon Oct 14, 2019 12:23 am
Forum: Beginner's corner
Topic: Fusing glass slides
Replies: 23
Views: 4854

Re: Fusing glass slides

@MichaelG, Thanks for the reference article. We're trying to do the some thing that they are with cleared mouse brains, only we are doing it upside down. Once we get the details worked out, we think it will be a big advantage. Our specimens are completely submersed in the organic liquids, our own sp...
by wstenberg
Sun Oct 13, 2019 6:23 pm
Forum: Beginner's corner
Topic: Fusing glass slides
Replies: 23
Views: 4854

Re: Fusing glass slides

@MicroBob,
I think that's a winner.
It will also give me a chance to start up the CNC mill- I always enjoy spending the afternoon on the mill.
If I can do it, I'll post a photo...
by wstenberg
Sun Oct 13, 2019 6:19 pm
Forum: Beginner's corner
Topic: Fusing glass slides
Replies: 23
Views: 4854

Re: Fusing glass slides

@Hobbyst46, Good ideas. I will look into that. We do use a protective nose cone over the objective when we are imaging. These objectives do cost a fortune! I am including a photo of the cuvette on the microscope, as well as my attempt to make on of polycarbonate cuvette showing the clouding. Acrylic...