Search found 101 matches

by Bryan
Sun Feb 10, 2019 3:40 am
Forum: Microscopes and optics
Topic: gluing the condenser
Replies: 5
Views: 3292

Re: gluing the condenser

Lenses are usually glued together with Canada Balsam. At least that’s how it was done in the past, they may have some new high tech adhesive now.
by Bryan
Sun Dec 30, 2018 6:03 pm
Forum: Pictures and Videos
Topic: Beerenol Crystals
Replies: 1
Views: 2201

Re: Beerenol Crystals

The link below is a GIF of the crystals growing, also shot on film. These were 10 second exposures shot one after the other, that should give you an idea how fast the crystals grow.

https://giphy.com/gifs/cXM2VQleOnIVQSwA7S
by Bryan
Sun Dec 30, 2018 5:57 pm
Forum: Pictures and Videos
Topic: Beerenol Crystals
Replies: 1
Views: 2201

Beerenol Crystals

I'm a film photographer and I like to develop my own black and white film. I use a home made developer that I created called Beerenol or Beerol. It's based off Caffenol, another home made developer that has been around a while. Caffenol uses instant coffee where Beerenol uses beer. Lately I have bee...
by Bryan
Sat Dec 29, 2018 5:48 am
Forum: Pictures and Videos
Topic: Birefringence of Ice
Replies: 10
Views: 5350

Re: Birefringence of Ice

Nice colors, I would have thought the ice would melt too fast, do you use an led light source?
by Bryan
Mon Nov 19, 2018 2:24 am
Forum: Pictures and Videos
Topic: Malic Acid crystal explorations in polarized light [Large file warning]
Replies: 10
Views: 5667

Re: Malic Acid crystal explorations in polarized light [Large file warning]

Those are beautiful, lately I’ve been growing some ascorbic acid Chrystal’s with some good results. What recipe did you use to grow the malic acid crystals? Is this from a malic acid supplement that you can get at the drug store or do you need a higher grade? Thanks Bryan! Yup absorbic acid produce...
by Bryan
Sun Nov 18, 2018 7:31 pm
Forum: Pictures and Videos
Topic: Malic Acid crystal explorations in polarized light [Large file warning]
Replies: 10
Views: 5667

Re: Malic Acid crystal explorations in polarized light [Large file warning]

Those are beautiful, lately I’ve been growing some ascorbic acid Chrystal’s with some good results. What recipe did you use to grow the malic acid crystals? Is this from a malic acid supplement that you can get at the drug store or do you need a higher grade?
by Bryan
Thu Nov 15, 2018 9:56 pm
Forum: Pictures and Videos
Topic: Parascaris mitosis
Replies: 4
Views: 2668

Re: Parascaris mitosis

That looks great Aslan, did you stain it? Do you have information on the LED bulb you used?
by Bryan
Wed Nov 14, 2018 5:38 pm
Forum: Resources (online, books etc.)
Topic: Leitz SM manual
Replies: 5
Views: 6551

Re: Leitz SM manual

These are sales brochures for the Leitz SM Microscope. They have good information on the different options and accessories that were available plus data on the objectives and eyepieces.
Leitz Medical and Student Microscope - 1964.pdf
(1.7 MiB) Downloaded 568 times
This one is in German.
Leitz Mikroskop SM 1960.pdf
(1.46 MiB) Downloaded 512 times
by Bryan
Tue Nov 13, 2018 4:24 pm
Forum: Resources (online, books etc.)
Topic: Leitz SM manual
Replies: 5
Views: 6551

Re: Leitz SM manual

Very helpful Aslan, I have some literature on the SM that I can add to this once I get it scanned. I notice from this that I should be able to change to a dovetail mount for the condenser. I have noticed that there are a lot more options on eBay for condensers in that mount than the sleeve mount tha...
by Bryan
Tue Nov 13, 2018 4:13 pm
Forum: Identification help
Topic: Rotifer?
Replies: 3
Views: 3067

Re: Rotifer?

It is a rotifer, a bdelloid by the look of it. Under adverse conditions they form cysts - this protects them until circumstances improve. The lack of movement you mention was probably the beginning of this process. Some links: http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=15&t=46 Th...
by Bryan
Tue Nov 13, 2018 4:00 am
Forum: Identification help
Topic: Rotifer?
Replies: 3
Views: 3067

Rotifer?

I was looking for tardigrades so I put some pond water in a container with some lichen and moss. I didn't find any tardigrades but I saw a few of these. I'm guessing rotifer but I have no idea. It wasn't moving at all, this was a long exposure, maybe it was dead. This was shot on expired Panatomic-X...
by Bryan
Mon Nov 12, 2018 5:08 pm
Forum: Off Topic
Topic: Flame Tests
Replies: 21
Views: 15436

Re: Flame Tests

I work in the hazardous waste cleanup industry, we used to test oil with what is called the Beilstein, or copper wire test. It's very similar to the test described in your link but it was commonly used to test for chlorinated compounds in oil like PCB's. If the oil was chlorinated it would emit a gr...
by Bryan
Sat Nov 10, 2018 1:49 am
Forum: My microscope
Topic: Leitz SM Medical Microscope
Replies: 31
Views: 21707

Re: Leitz SM Medical Microscope

MichaelG. wrote:Bryan,

You may find this useful:
http://www.geocities.ws/dushang2000/Mic ... hments.pdf

MichaelG.

I will edit this post if I find more.
Thanks Michael, that’s actually quite useful.
by Bryan
Fri Nov 09, 2018 9:57 pm
Forum: My microscope
Topic: Leitz SM Medical Microscope
Replies: 31
Views: 21707

Re: Leitz SM Medical Microscope

so I can make contact prints When I was 15 I had b/w photography as a subject in school. I told my grandmother about it and about the enlarger that was used. She didn't want to hear about the enlarger, all that was needed was a box with a bulb, switch and milk glass on it. Okay - what I didn't know...
by Bryan
Fri Nov 09, 2018 6:16 pm
Forum: My microscope
Topic: Leitz SM Medical Microscope
Replies: 31
Views: 21707

Re: Leitz SM Medical Microscope

Hi Bryan, thank you for posting your analog photography! These old microscope cameras were expensive and nicely made instruments but I really can't remember when I last saw an image made by them. I myself started digital photography late, it was 2007 and I bought a Pentax DSLR when 6 megapixels did...
by Bryan
Fri Nov 09, 2018 4:31 pm
Forum: My microscope
Topic: Leitz SM Medical Microscope
Replies: 31
Views: 21707

Re: Leitz SM Medical Microscope

This is a test shot with my setup using film. This is the trailing edge of a mosquito wing at 450X magnification. Looks like feathers to me. The exposure was about 25 seconds. The film is expired Kodak Panatomic-X semi-stand developed in 1:100 R09 (Rodinal). I rated the film at an ISO of 25 since it...
by Bryan
Tue Nov 06, 2018 7:51 pm
Forum: Microscopes and optics
Topic: What is this?
Replies: 6
Views: 3467

Re: What is this?

It's a theodolite, for measuring angles in surveying. Nothing to do with microscopes. That's what I was thinking it is as well. It looks like it would be extremely heavy to use in the field, probably why they use more plastic in modern ones. I assume the viewfinder points down to get a measurement ...
by Bryan
Tue Nov 06, 2018 12:31 am
Forum: Illumination Techniques
Topic: The Next Big Thing, or, Back To The Future
Replies: 5
Views: 5042

Re: The Next Big Thing, or, Back To The Future

It looks like it could blow your eyeballs out of the back of your head. :shock:
by Bryan
Thu Nov 01, 2018 5:33 pm
Forum: Specimens, samples and slides
Topic: Storing and re-using slides
Replies: 11
Views: 7329

Re: Storing and re-using slides

Incompatible hazardous materials. Chemical: oxidizers (chlorine laundry bleach, hydrogen peroxide, calcium hypochlorite) Don't Mix With: petroleum-based materials, fuels, solvents, corrosives, heat Because: fire hazard, toxic gas generation https://rmehs.fullerton.edu/_documents/policiesandguideline...
by Bryan
Thu Nov 01, 2018 5:28 pm
Forum: Specimens, samples and slides
Topic: Storing and re-using slides
Replies: 11
Views: 7329

Re: Storing and re-using slides

I don't think it's safe to mix an oxidizer with a flammable liquid, be careful with that. I can see where the dish soap would help prevent drying spots. Kodak makes a product called Photo-Flo 200 that I use to prevent spots when drying photographic film, a small amount works really well. Mix it with...
by Bryan
Sat Oct 27, 2018 8:34 pm
Forum: My microscope
Topic: Leitz SM Medical Microscope
Replies: 31
Views: 21707

Re: Leitz SM Medical Microscope

I have everything set up now with my trinocular head, now I need to start figuring out how to get some good photos with it. Special thanks to ebenbildmicroscopy for supplying the adapter for the trinocular head.
PA270679+s.jpg
PA270679+s.jpg (95.69 KiB) Viewed 19045 times
by Bryan
Wed Oct 24, 2018 10:25 pm
Forum: Pictures and Videos
Topic: Pool sample
Replies: 3
Views: 2939

Re: Pool sample

You may want to put a little chlorine in that pool. ;)
by Bryan
Wed Oct 24, 2018 6:21 pm
Forum: My microscope
Topic: Leitz SM Medical Microscope
Replies: 31
Views: 21707

Re: Leitz SM Medical Microscope

There are several on eBay right now, it's called a MIKAS microscope adapter or just search for "Leitz microscope adapter". It's easy to adapt to any camera that has a removable lens, all you need is an adapter that goes from LTM or M39 thread mount to whatever mount you need for your camera. They al...
by Bryan
Tue Oct 23, 2018 10:05 pm
Forum: Beginner's corner
Topic: Condenser Height Adjustment
Replies: 9
Views: 7802

Re: Condenser Height Adjustment

As a general rule, I wind mine up to the very top, where it's brightest, and then lower it until I get good contrast. There are specifically stated position settings, but the people writing these in articles I have read usually say, "open it a little past the standard setting" and "adjust the conde...
by Bryan
Tue Oct 23, 2018 3:23 pm
Forum: Microscopy accessories
Topic: Forgive me if I try to manipulate you, a little!!
Replies: 23
Views: 14975

Re: Forgive me if I try to manipulate you, a little!!

That's very interesting, what does it use for the hydraulics, water, oil, air?
by Bryan
Sun Oct 14, 2018 2:25 am
Forum: Pictures and Videos
Topic: snail shell
Replies: 10
Views: 6345

Re: snail shell

Nice shot, did you also focus stack it? I’m just starting to learn about photomicrography so I would like to know ways to overcome the tiny depth of field.
by Bryan
Thu Oct 04, 2018 8:37 pm
Forum: Microscopes and optics
Topic: Enamel Care
Replies: 7
Views: 4869

Re: Enamel Care

What about repairing chips in the enamel? I was thinking of using automotive touch up paint, the kind they sell for filling in chips. It comes in a small jar, you just put a drop in a chip and it fills it in.
by Bryan
Wed Oct 03, 2018 8:21 pm
Forum: Collecting microscopes and slides
Topic: A new centerpiece for the brass section
Replies: 6
Views: 6383

Re: A new centerpiece for the brass section

Beautiful scope, what a great find. If you you're patient you can find some great deals like this on that auction site. It's often someone that doesn't know what they are selling and didn't take the time to research it. Sometimes they will misspell the name, I have found some great deals that way, L...
by Bryan
Fri Sep 28, 2018 5:25 pm
Forum: Introduce yourself
Topic: Hello from the Finger Lakes!
Replies: 3
Views: 3301

Re: Hello from the Finger Lakes!

Welcome Tom, I just joined this forum a few weeks ago after purchasing a 1957 Leitz SM microscope. I'm currently working on making it a trinocular microscope. I also have an appreciation for the build quality of these black enamel microscopes, that probably comes from my appreciation of the Leica ca...
by Bryan
Fri Sep 28, 2018 1:33 am
Forum: Pictures and Videos
Topic: Pol crystal mirror abstract
Replies: 7
Views: 3825

Re: Pol crystal mirror abstract

Nice job, it almost looks 3D.