Search found 971 matches

by Radazz
Fri Jan 10, 2020 9:15 pm
Forum: Collecting microscopes and slides
Topic: 1880 B&L investigator in use
Replies: 3
Views: 82

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: 82

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: 247

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: 247

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: 247

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: 17
Views: 385

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: 381

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: 381

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: 7
Views: 661

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: 724

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: 3101

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: 766

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: 303

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: 1002

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: 436

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: 285

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: 436

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: 439

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: 285

Alanine POL

Alanine
Olympus IX70
4x pol

Image

Enjoy,
Radazz
by Radazz
Thu Sep 05, 2019 6:32 pm
Forum: Pictures and Videos
Topic: Two Favorite Amoebas from this week
Replies: 5
Views: 627

Re: Two Favorite Amoebas from this week

Really nice catch. I’ve seen this type of amoeba move pretty quickly when they don’t like the light, but I’ve never seen one pull it’s test like this.
Thanks for sharing.
Radazz
by Radazz
Tue Sep 03, 2019 5:32 pm
Forum: Beginner's corner
Topic: Can't see sperm in microscope
Replies: 5
Views: 1277

Re: Can't see sperm in microscope

They don’t last very long. Plastic might have the wrong refractive index, making the sample invisible, or might have killed them. Try a regular slide and coverslip, and don’t wait to long to get the sample under the scope. 400x is best. Looks like you’re going to have to take another one for the tea...
by Radazz
Wed Aug 21, 2019 2:55 pm
Forum: Pictures and Videos
Topic: Arcella amoeba - empty housing
Replies: 6
Views: 722

Re: Arcella amoeba - empty housing

Beautiful image, MB!
by Radazz
Wed Aug 21, 2019 2:53 pm
Forum: Pictures and Videos
Topic: Testate amoeba
Replies: 0
Views: 621

Testate amoeba

Here’s a testate amoeba I found in my aquarium.
Olympus IX70 60x HMC
I’ll go out on a limb and say Euglypha?
I had to chase her around. She really didn’t like the light.

Enjoy
Radazz
by Radazz
Sat Jul 13, 2019 2:59 pm
Forum: Beginner's corner
Topic: Microscope Nikon second hand price advice
Replies: 8
Views: 4161

Re: Microscope Nikon second hand price advice

Sorry for the late post, I just ran across this thread.
I have a couple of Nikon Labophot 2 scopes and a BX40.
The Nikon is 160mm and the Olympus is infinity.
IMHO, if you can swing it, the Olympus BX40 would be the better choice.
Probably way too late, but relevant nevertheless.
Radazz
by Radazz
Sat Jul 13, 2019 2:42 pm
Forum: Pictures and Videos
Topic: Salty landscape
Replies: 6
Views: 1223

Re: Salty landscape

Nice technique!
Really pretty results
by Radazz
Wed Jul 10, 2019 12:18 pm
Forum: Pictures and Videos
Topic: Ultima Thule in crystal form
Replies: 5
Views: 1054

Re: Ultima Thule in crystal form

Very cool!
by Radazz
Sun Jul 07, 2019 2:59 pm
Forum: Pictures and Videos
Topic: Melosira nummuloides
Replies: 11
Views: 1324

Re: Melosira nummuloides

Thank you!
Jim
by Radazz
Fri Jun 28, 2019 2:35 pm
Forum: Important announcements
Topic: New Youtube Channel
Replies: 10
Views: 6085

Re: New Youtube Channel

Excellent videos. Thanks Oliver!
by Radazz
Fri Jun 21, 2019 2:02 am
Forum: Collecting microscopes and slides
Topic: Some Zeiss stands
Replies: 9
Views: 5541

Re: Some Zeiss stands

Hi Radazz, nice collection! Is your big stage really flat and in good condition? I have one similar to this and it is deeply washed out and in additon of concave shape. :shock: Bob I got this one from St. Louis university medical school, and aside from some scratches it is just about perfect. I als...
by Radazz
Thu Jun 20, 2019 3:34 pm
Forum: Collecting microscopes and slides
Topic: Some Zeiss stands
Replies: 9
Views: 5541

Re: Some Zeiss stands

Impressive and nice. I have seen the very wide stage on the Standard 16 (or 18?) on the left in a Zeiss Brochure from that era. Is it advantageous in use ? I’ve only seen pictures and they were of a standard 16 with the rheostat on the base. The riser may be for a larger illuminator on a 14. Just g...