Search found 7589 matches

by 75RR
Fri Jan 15, 2021 9:50 pm
Forum: For forum members who want to buy and sell equipment
Topic: Wanted - Zeiss intermediate rings - and/or dic sliders for standard
Replies: 4
Views: 128

Re: Wanted - Zeiss intermediate rings - and/or dic sliders for standard

. Wait, where is the male thread on this ring? There isn't one. Cylinder drops into nosepiece threaded hole and is held in position by threaded lens holder that screws into cylinder from the bottom. See arrow. This is the old type, I suppose we should present a selection of the available slide hold...
by 75RR
Fri Jan 15, 2021 8:49 pm
Forum: For forum members who want to buy and sell equipment
Topic: Wanted - Zeiss intermediate rings - and/or dic sliders for standard
Replies: 4
Views: 128

Re: Wanted - Zeiss intermediate rings - and/or dic sliders for standard

This might be a useful reminder to forum members

Zeiss 160 system DIC slider list:
.
by 75RR
Thu Jan 14, 2021 10:19 pm
Forum: Sandbox
Topic: 100x oil vs. 100x dry objectives
Replies: 5
Views: 123

Re: 100x oil vs. 100x dry objectives

aristharcus wrote:
Thu Jan 14, 2021 7:29 pm

Anyway, maybe I must learn to use oil as a natural microscopy technique.
In my view not every subject merits high magnification and resolution, but when they do, it is well worth the 10 extra minutes you spend at the end of a session cleaning off the immersion oil.
by 75RR
Wed Jan 13, 2021 4:38 pm
Forum: Pictures and Videos
Topic: Paratomy
Replies: 8
Views: 150

Re: Paratomy

Nice catch and videos!
by 75RR
Tue Jan 12, 2021 5:14 pm
Forum: Pictures and Videos
Topic: A marine diatom with oblique lighting
Replies: 15
Views: 173

Re: A marine diatom with oblique lighting

You are managing to pick up some fine detail there. Well done.

Dragged your image to the desktop and ran Get Info on it - it says 115KB, so there is room on your side to up the resolution a bit.
by 75RR
Tue Jan 12, 2021 7:06 am
Forum: Resources (online, books etc.)
Topic: The Insects - An Outline of Entomology
Replies: 1
Views: 58

The Insects - An Outline of Entomology

Interesting and engaging book. Perhaps just the thing for budding stereo-microscopists

https://www.researchgate.net/publicatio ... sectsproof
by 75RR
Mon Jan 11, 2021 7:54 pm
Forum: Camera systems and imaging
Topic: Camera Purchase Paralysis
Replies: 5
Views: 228

Re: Camera Purchase Paralysis

Geode wrote:
Sun Jan 10, 2021 11:12 pm
A part of me wishes I spent less on the scope, and more on the camera hahaha
Since one can only photograph what one sees through the microscope - you did put your money in the right place. ;)
by 75RR
Sun Jan 10, 2021 10:14 am
Forum: Pictures and Videos
Topic: Sperm explosion - Stephanosphaera pluvialis, sexual reproduction
Replies: 5
Views: 249

Re: Sperm explosion - Stephanosphaera pluvialis, sexual reproduction

That is a spectacular location to collect such interesting samples! Thanks for the tour
by 75RR
Sat Jan 09, 2021 2:02 pm
Forum: Resources (online, books etc.)
Topic: Microscope repair from Valhalla
Replies: 2
Views: 151

Re: Microscope repair from Valhalla

Thanks for the links. As you say, well worth translating an article if it helps to solve a problem or two.
by 75RR
Fri Jan 08, 2021 6:53 pm
Forum: Specimens, samples and slides
Topic: Diatom Shop experiences
Replies: 7
Views: 1332

Re: Diatom Shop experiences

I see on their website in both cases they're mounted directly to the coverglass. Have no actual experience of Diatom Shop, but would like to say that the blurb (which includes the above mounting information) is not as unique in terms of technique as is made out. That is not to say they are not well...
by 75RR
Fri Jan 08, 2021 5:25 pm
Forum: My microscope
Topic: Deleted
Replies: 9
Views: 406

Re: The wisest way to buy a microscope

lasvideo wrote:
Fri Jan 08, 2021 1:03 pm
It's nice to know there are asshats even at this site.

BTW, AH's, there is a 3001 model. It's the trinocular version. Now, go play with your little scopes and leave the adults alone.
If it is facts you want - you are here on false pretenses and your name calling is, how shall I put it ... childish
by 75RR
Fri Jan 08, 2021 7:33 am
Forum: My microscope
Topic: Deleted
Replies: 9
Views: 406

Re: The wisest way to buy a microscope

First two posts on the forum are in praise of a microscope reseller? Spam much?
by 75RR
Fri Jan 08, 2021 7:26 am
Forum: Identification help
Topic: Any Ideas
Replies: 2
Views: 111

Re: Any Ideas

I would think that you might have more luck posting on pigeon fancier forums ... My suggestion would be leaf mold spores - see link for similar looking structures - though not necessarily the same ones. https://www.researchgate.net/publication/237742573_New_species_and_new_records_of_biotrophic_micr...
by 75RR
Thu Jan 07, 2021 3:29 pm
Forum: Pictures and Videos
Topic: Antique Diatom Arrangement
Replies: 12
Views: 406

Re: Antique Diatom Arrangement

No worries :)
by 75RR
Thu Jan 07, 2021 10:46 am
Forum: Identification help
Topic: Not a clue
Replies: 3
Views: 125

Re: Not a clue

Nice catch and video!
.
by 75RR
Wed Jan 06, 2021 9:46 pm
Forum: Pictures and Videos
Topic: Antique Diatom Arrangement
Replies: 12
Views: 406

Re: Antique Diatom Arrangement

Agree, lovely diatoms and great detail. Do like the arrangement as well.

Must say you led me on a merry chase looking for 'Strictodiscus californicus' as my browser (perhaps sensibly) does not check scientific names :)

Sticto = spotted (Had to look that up!)
by 75RR
Wed Jan 06, 2021 9:36 pm
Forum: Pictures and Videos
Topic: Some homegrown diatoms
Replies: 7
Views: 363

Re: Some homegrown diatoms

Nice selection of small diatoms. I must admit that I am more drawn to the larger ones as there is that much more detail to be seen. A big advantage of pond water and its denizens is that they keep and as you say reproduce. I have to replace my salt water samples every three days or so. Is your 40x a...
by 75RR
Sun Jan 03, 2021 2:24 pm
Forum: Pictures and Videos
Topic: Nucleus of Spirogyra, Synedra
Replies: 8
Views: 351

Re: Nucleus of Spirogyra, Synedra

Very nice! I have found them quite hard to capture
by 75RR
Thu Dec 31, 2020 5:18 pm
Forum: Identification help
Topic: Crustacean
Replies: 3
Views: 135

Re: Crustacean

by 75RR
Thu Dec 31, 2020 2:31 pm
Forum: Beginner's corner
Topic: Need help choosing a microscope
Replies: 6
Views: 199

Re: Need help choosing a microscope

Here is a customer review you might find interesting.

https://www.amazon.co.uk/gp/customer-re ... B001UJJGV4

Perhaps someone else can chip in with advice on suitable ages of children
by 75RR
Thu Dec 31, 2020 9:56 am
Forum: Beginner's corner
Topic: Need help choosing a microscope
Replies: 6
Views: 199

Re: Need help choosing a microscope

You don't mention the age of the child. Anything under around 8 years old would be a little young even for the stereoscope let alone the compound microscope.
by 75RR
Thu Dec 31, 2020 8:13 am
Forum: Beginner's corner
Topic: Need help choosing a microscope
Replies: 6
Views: 199

Re: Need help choosing a microscope

The lekakademin looks like a toy, so I would say no to that one. https://lekakademin.se/media/catalog/product/cache/895d15173add8aeddb82db6db21a1b30/s/i/side_with-parts.jpg The Bresser is better but still not ideal for a child. Have you considered a Stereoscope? See link to a previous discussion bel...
by 75RR
Tue Dec 29, 2020 10:15 pm
Forum: Microscopes and optics
Topic: Zeiss Citoval 2
Replies: 29
Views: 613

Re: Zeiss Citoval 2

.
Good points - don't think there ever is an easy answer when buying from afar.
by 75RR
Tue Dec 29, 2020 9:59 pm
Forum: Microscopes and optics
Topic: Zeiss Citoval 2
Replies: 29
Views: 613

Re: Zeiss Citoval 2

. I think that when recommending or not the purchase of a used stereoscope/microscope one should take into account the location of the buyer, the options that are therefore available and the currency to be used. In this case the buyer is in Ukraine, stereoscope is in local currency (amount mentioned...
by 75RR
Tue Dec 29, 2020 2:39 pm
Forum: Identification help
Topic: Ciliate Diversity Illustration
Replies: 6
Views: 215

Re: Ciliate Diversity Illustration

.
Here is a link to a PDF version that has had a more accurate scale-bar added

https://www.dropbox.com/s/vnp5l13he4vvc ... ).pdf?dl=0
by 75RR
Tue Dec 29, 2020 2:29 pm
Forum: Beginner's corner
Topic: Wild Heerbrugg M8 broken prism alignment and or service manual
Replies: 9
Views: 345

Re: Wild Heerbrugg M8 broken prism alignment and or service manual

One possibility is to inquire at a local university or institute as to who services their equipment. Perhaps even an in-house technician can help.
by 75RR
Tue Dec 29, 2020 9:06 am
Forum: Illumination Techniques
Topic: Question on Kohler set up
Replies: 25
Views: 600

Re: Question on Kohler set up

MichaelG. wrote:
Tue Dec 29, 2020 8:50 am
Grab these whilst they are available: https://groups.rifeforum.com/Files/Micr ... formation/

Only just found them ... I will read later.

MichaelG.
Nice find!
by 75RR
Tue Dec 29, 2020 7:41 am
Forum: Illumination Techniques
Topic: Question on Kohler set up
Replies: 25
Views: 600

Re: Question on Kohler set up

Some microscopes are not setup for Köhler, instead they use critical illumination. This might be the case with yours. See Chapter 7 of Microscopy Primer by Frithjof A. S. Sterrenburg: http://www.microscopy-uk.org.uk/index.html?http://www.microscopy-uk.org.uk/primer/intro.htm All of it however is wor...
by 75RR
Mon Dec 28, 2020 10:13 pm
Forum: Illumination Techniques
Topic: Question on Kohler set up
Replies: 25
Views: 600

Re: Question on Kohler set up

The instructions here http://www.brunelmicroscopes.co.uk/kohler.html prescribe to fully close both the field AND substage condenser iris. All the others I have followed either do not mention what to do with the substage condenser or say to leave it wide open. If I close both I can see the field (I ...
by 75RR
Mon Dec 28, 2020 9:35 pm
Forum: Beginner's corner
Topic: overwhelmed with specs and shopping
Replies: 8
Views: 360

Re: overwhelmed with specs and shopping

I am in contact with Carl Hunsinger. His PDF is very informative and I might consider getting a base stand then get most parts individually. He is the man if you are looking into a BH2. His repair PDFs have done more to raise the standing of a BH2 within the Big Four than anything else. As a Zeiss ...