Search found 982 matches

by Radazz
Thu Jul 09, 2020 2:48 am
Forum: Collecting microscopes and slides
Topic: What b&l model is this?
Replies: 9
Views: 1232

Re: What b&l model is this?

Now that you mention it, one was out of alignment (cross-eyed).
I opened the top, and it was obvious how the one prism had moved in the mount.
Easy fix. Changing the bottom prism is a bear, though.
Radazz
by Radazz
Wed Jul 08, 2020 12:11 pm
Forum: Collecting microscopes and slides
Topic: What b&l model is this?
Replies: 9
Views: 1232

Re: What b&l model is this?

I have several of these in my collection.
One of them has gotten condensation in that splitter chamber.
When this happens, it becomes the perfect environment for mold.
That one has green between the elements of the bottom prism.
The 16033 stand introduced in the 1950s are the best IMHO.
Radazz
by Radazz
Tue Jun 30, 2020 6:15 pm
Forum: Collecting microscopes and slides
Topic: Zeiss research microscope?
Replies: 8
Views: 1376

Re: Zeiss research microscope?

More better.

Image

Radazz
by Radazz
Fri Jun 26, 2020 11:05 am
Forum: My microscope
Topic: Flat Field Dynazoom Operational
Replies: 14
Views: 2638

Re: Flat Field Dynazoom Operational

I have one of these from the medical school. Mine is the single knob version.
I agree they are a little ‘under-lit’.
The one I have doesn’t perform as well as a 1959 Dynoptic in the collection.
Probably needs some tuning, but I have higher priorities at this time.

Nice looking stand!

Radazz
by Radazz
Fri Jun 26, 2020 10:52 am
Forum: Collecting microscopes and slides
Topic: Zeiss research microscope?
Replies: 8
Views: 1376

Re: Zeiss research microscope?

Welcome information, as always, Apo.
I had another brass Zeiss objective in the parts box, so I’m watching the Bay to see if the other two float by.
Not a daily sight, I’m sure.
I’m building up another Axioskop first.
Radazz
by Radazz
Thu Jun 25, 2020 9:36 pm
Forum: Collecting microscopes and slides
Topic: Zeiss research microscope?
Replies: 8
Views: 1376

Re: Zeiss research microscope?

Thank you for the catalogs as well, 75
by Radazz
Thu Jun 25, 2020 9:32 pm
Forum: Collecting microscopes and slides
Topic: Zeiss research microscope?
Replies: 8
Views: 1376

Re: Zeiss research microscope?

Thanks, Charles.
That helps a lot.
Jim
by Radazz
Thu Jun 25, 2020 6:24 pm
Forum: Collecting microscopes and slides
Topic: Zeiss research microscope?
Replies: 8
Views: 1376

Zeiss research microscope?

Here’s an interesting Carl Zeiss Jena microscope. I can find almost no info about it in English. My best guess would be 1920 to 1930, based on when American manufacturers switched from brass to rhodium or chromium or whatever Zeiss and Bosch and Lomb used. Spenser crowed about rhodium. I can’t belie...
by Radazz
Wed Jun 24, 2020 2:12 pm
Forum: Pictures and Videos
Topic: Experiment with sidelight
Replies: 6
Views: 985

Re: Experiment with sidelight

Interesting. What was your light source?

Jim
by Radazz
Thu Jun 04, 2020 9:38 am
Forum: Home-made microscope adaptations
Topic: Labofot 2 lamp house
Replies: 3
Views: 597

Re: Labofot 2 lamp house

Thank you,
Jim
by Radazz
Wed Jun 03, 2020 6:16 pm
Forum: Home-made microscope adaptations
Topic: Labofot 2 lamp house
Replies: 3
Views: 597

Labofot 2 lamp house

Has anyone with a 3D printer made a lamp house for a Nikon Labophot 2?
Hardest part to find for a restoration.

Thanks in advance,
Radazz
by Radazz
Fri Jan 10, 2020 9:15 pm
Forum: Collecting microscopes and slides
Topic: 1880 B&L investigator in use
Replies: 3
Views: 1866

Re: 1880 B&L investigator in use

Hi Radazz, beautiful instrument and great photo! The quality of the micro photo is completely on the same level as what is shown here from much more modern instruments - very astonishing. The microscope design looks fairly modern. I have a Seibert microscope of the same age and it has a parallelogr...
by Radazz
Fri Jan 10, 2020 3:24 pm
Forum: Collecting microscopes and slides
Topic: 1880 B&L investigator in use
Replies: 3
Views: 1866

1880 B&L investigator in use

Playing on a rainy day B&L investigator Period slide of blowfly sucking mouth parts. https://i.postimg.cc/T3Knp331/ABD0707-E-8812-4671-AAE0-D97-C26-BAA9-A0.jpg The setup https://i.postimg.cc/MKPy6Qxg/E84-B714-A-BAE1-4392-BFFB-E5852012-A684.jpg Cell phone shot Interesting plumbing Enjoy Radazz
by Radazz
Thu Jan 09, 2020 2:58 pm
Forum: Illumination Techniques
Topic: LED vs. Halogen test
Replies: 7
Views: 2409

Re: LED vs. Halogen test

I bought a retro fit set from an auction site. Polarizer sized to sit on the field lens, and an analyzer that drops into the nose piece above the objectives.
Radazz
by Radazz
Mon Jan 06, 2020 11:09 pm
Forum: Illumination Techniques
Topic: LED vs. Halogen test
Replies: 7
Views: 2409

Re: LED vs. Halogen test

Radazz, I like very much this comparison ! thanks for posting ! Was the LED white (6500K) ? was the LED light filtered ? On my microscope, equipped with a retroDiode white LED, I use a KR12 warming filter to reduce the bluish-violet tint somewhat. 6500k yes.the first one. Don’t have such a filter. ...
by Radazz
Mon Jan 06, 2020 9:58 pm
Forum: Illumination Techniques
Topic: LED vs. Halogen test
Replies: 7
Views: 2409

LED vs. Halogen test

Here’s a direct comparison. Zeiss Standard MD500 5mp eyepiece camera ToupView (some frequency problems) Illumination LED - RetroDiode Zeiss Standard replacement illuminator Halogen - Wild Heerbrugg Hal lamp with transformer Both fit into a tunnel on the back of the base. 100x Antique slide Fossil Di...
by Radazz
Mon Jan 06, 2020 3:29 pm
Forum: Pictures and Videos
Topic: Salt mix
Replies: 18
Views: 3120

Re: Salt mix

Very nice, and cool colors!
Radazz
by Radazz
Mon Jan 06, 2020 3:26 pm
Forum: Illumination Techniques
Topic: LED vs. Halogen
Replies: 15
Views: 3196

Re: LED vs. Halogen

Would be interested to see a side by side comparision of the same slide under LED and Halogen lighting if possible This article is helpful but the images are small: http://www.microscopy-uk.org.uk/mag/indexmag.html?http://www.microscopy-uk.org.uk/mag/artjan14/dw-lightcompare.html To me, some of the...
by Radazz
Sat Jan 04, 2020 5:26 pm
Forum: Illumination Techniques
Topic: LED vs. Halogen
Replies: 15
Views: 3196

LED vs. Halogen

After experimenting with LED lighting for a few years now, I must say, for me anyway, LED is very nice for observation, but I get much better photographs with Halogen.

My experience, can’t speak for anyone else.

Radazz
by Radazz
Sat Jan 04, 2020 5:20 pm
Forum: Pictures and Videos
Topic: Amoeba hunts for ciliate
Replies: 8
Views: 2068

Re: Amoeba hunts for ciliate

Hoffman Modulation Contrast works great for protists as well. Doesn’t have the halos.

I must admit to wanting a DIC setup, but those don’t fall out of the sky.

Radazz
by Radazz
Sat Jan 04, 2020 5:14 pm
Forum: Pictures and Videos
Topic: Green Hydra (Chlorohydra viridissima)
Replies: 7
Views: 1713

Re: Green Hydra (Chlorohydra viridissima)

Just curious, do green hydra eat other organisms, or just photosynthesize?
Radazz
by Radazz
Sat Jan 04, 2020 5:07 pm
Forum: Pictures and Videos
Topic: Pater noster tractor ruts meiofauna and protists
Replies: 37
Views: 8650

Re: Pater noster tractor ruts meiofauna and protists

Very cool images, thanks.
Radazz
by Radazz
Sat Dec 14, 2019 2:09 pm
Forum: Specimens, samples and slides
Topic: A source for diatoms
Replies: 11
Views: 3267

Re: A source for diatoms

This is what I get from diatomaceous earth.
Olympus BX40. 40x. Phase Contrast
Image
Radazz
by Radazz
Thu Dec 12, 2019 1:56 pm
Forum: Pictures and Videos
Topic: Ascorbic acid
Replies: 2
Views: 827

Ascorbic acid

Ascorbic acid
Olympus IX70
20x pol
I never know what will turn up.
Image
Enjoy,
Radazz
by Radazz
Wed Dec 11, 2019 4:50 am
Forum: Pictures and Videos
Topic: Navicula lyra
Replies: 15
Views: 2501

Re: Navicula lyra

Very nice and great detail
Radazz
by Radazz
Wed Dec 11, 2019 4:48 am
Forum: Pictures and Videos
Topic: Muscles in leg of centipede
Replies: 5
Views: 997

Re: Muscles in leg of centipede

Thank you all so much.
by Radazz
Tue Dec 10, 2019 7:03 pm
Forum: Pictures and Videos
Topic: Alanine POL
Replies: 2
Views: 702

Re: Alanine POL

Thanks, my friend!
by Radazz
Tue Dec 10, 2019 7:02 pm
Forum: Pictures and Videos
Topic: Muscles in leg of centipede
Replies: 5
Views: 997

Muscles in leg of centipede

Muscles in leg of centipede
Olympus IX70
4x pol

Image
Enjoy,
Radazz
by Radazz
Mon Dec 09, 2019 5:18 pm
Forum: Pictures and Videos
Topic: Diatom from Pesacola, Florida
Replies: 6
Views: 908

Re: Diatom from Pesacola, Florida

Another nice one, Bob
Radazz
by Radazz
Mon Dec 09, 2019 5:17 pm
Forum: Pictures and Videos
Topic: Alanine POL
Replies: 2
Views: 702

Alanine POL

Alanine
Olympus IX70
4x pol

Image

Enjoy,
Radazz