Search found 187 matches

by Oliver
Sat Jan 14, 2017 1:52 pm
Forum: Beginner's corner
Topic: Can you see vitamins and minerals on microscopes ?
Replies: 10
Views: 2131

Re: Can you see vitamins and minerals on microscopes ?

Hello,
You can not see the individual vitamin molecules and also not minerals. They are way too small. You can crystallize the vitamins, however and observe them under polarized light. And this is indeed an interesting thing to do with a microscope.

Oliver.
by Oliver
Sat Dec 24, 2016 11:30 pm
Forum: Miscellaneous
Topic: What cleaning solutions at home?
Replies: 4
Views: 1224

Re: What cleaning solutions at home?

Today I ordered my lense paper Use lens paper only for removing immersion oil. There is the danger of scratching the lens, as the paper is "hard". Better to use pure cotton, as it has a larger surface area to trap dust and there is less danger of pressing dust grains against the glass. About the so...
by Oliver
Sun Dec 11, 2016 2:23 pm
Forum: Beginner's corner
Topic: What's the easiest way to create a text only readable through microscope?
Replies: 6
Views: 1459

Re: What's the easiest way to create a text only readable through microscope?

Hello, Make a text to display on a computer screen (eg. with powerpoint) and then use an analog film camera to take a picture of the screen. Get the film developed (if this service is still available) and cut out the text on the film, glue film to microscope slide with transparent tape. Better then ...
by Oliver
Thu Dec 01, 2016 8:10 pm
Forum: Pictures and Videos
Topic: More zoomable images
Replies: 1
Views: 387

More zoomable images

Hello, Some time ago I annotated a large number of zoomable slides, which I just want to present to you now.You can read the annotations by clicking on the blue pins in the images. I will be using these also for teaching purposes in school. The album links below the images have more slides to explor...
by Oliver
Sat Nov 26, 2016 8:10 pm
Forum: Digital processing
Topic: New tool - Easyzoom
Replies: 3
Views: 3060

New tool - Easyzoom

Hello, I just want to quickly introduce a new tool to you, it is called easyzoom and allows for simple zooming end embedding of very large images. Easyzoom gives you up to 2GB of free storage space and the embed code can be used to include the image on every website (just like youtube videos). You c...
by Oliver
Fri Nov 18, 2016 9:33 pm
Forum: About the website, the magazine and this forum
Topic: 403 Forbidden Error
Replies: 2
Views: 3103

Re: 403 Forbidden Error

Hello,
The site should work again....
Oliver
by Oliver
Fri Nov 18, 2016 9:24 pm
Forum: Important announcements
Topic: 403 Forbidden Error
Replies: 13
Views: 17607

Re: 403 Forbidden Error

Hello Forum Members,

I hope that the problem has been resolved now. Some countries were blocked by the server, for whatever reason. Sorry for the inconvenience.

Oliver
by Oliver
Thu Oct 20, 2016 7:41 pm
Forum: Pictures and Videos
Topic: Request for Photos
Replies: 9
Views: 937

Re: Request for Photos

Amanda,

Check out wikipedia (they have creative commons pictures that you can use if you give credit) and/or commons.wikimedia.org for a more complete list.
https://en.wikipedia.org/wiki/Pediastrum
https://en.wikipedia.org/wiki/Diatom
etc.

Oliver.
by Oliver
Sun Oct 02, 2016 6:19 pm
Forum: Introduce yourself
Topic: Hello from Cuxlander
Replies: 7
Views: 1747

Re: Hello from Cuxlander

Hans,
Now I get the connection - i have published already several pictures from you in the magazine some time ago.
greets, Oliver.
by Oliver
Sat Oct 01, 2016 7:56 pm
Forum: Introduce yourself
Topic: Hello from Cuxlander
Replies: 7
Views: 1747

Re: Hello from Cuxlander

Hello and welcome, and am still struggling with the software (colors, flickering). The flickering is because of fast exposure time and the frequency of the electricity of the lamp. The Toupview software should allow you to set the frequency of the power source to 50 Hz and you should also be able to...
by Oliver
Thu Sep 29, 2016 7:11 pm
Forum: Beginner's corner
Topic: Couple newbie questions, please.
Replies: 7
Views: 1297

Re: Couple newbie questions, please.

Hello, Should I have at least a blue filter? Older tungsten and halogen lamps might produce a light that is more red and the blue filter gives the image a more neutral color (for photography). If you turn the lamp on to low brightness, then the color is also more red and the blue filter helps compen...
by Oliver
Sat Sep 24, 2016 5:04 pm
Forum: Beginner's corner
Topic: DIY DF Filter
Replies: 5
Views: 1290

Re: DIY DF Filter

about the gradient strips: click the link above (from 75RR) where you downloaded the templates. In the thread further down, there are links that explain their use.
Oliver
by Oliver
Thu Sep 22, 2016 8:00 am
Forum: Beginner's corner
Topic: DIY DF Filter
Replies: 5
Views: 1290

Re: DIY DF Filter

Hello, The following link has a table (towards middle of article) with recommended circle size for the different objectives: http://www.olympusmicro.com/primer/techniques/darkfield.html recommendations: 1. It is much easier to print the circles on overhead foil as it is much stiffer. You can also ch...
by Oliver
Sun Sep 18, 2016 5:27 am
Forum: Beginner's corner
Topic: Beginner's Options In Central Europe
Replies: 8
Views: 1938

Re: Beginner's Options In Central Europe

Hello, For observing integrated circuits (or electronics in general) there are special purpose stereo microscopes available. People who do fine soldering (SMD soldering) use them but others work as well. There are several importers of microscopes in Europe. Many, if not all, microscopes are manufact...
by Oliver
Fri Sep 16, 2016 10:18 pm
Forum: Microscopes and optics
Topic: opinion on this scope please
Replies: 19
Views: 3131

Re: opinion on this scope please

thanks guys, now with this microscope can I view normal non-living cells just as well as living cells? i'm new to this so i don't want to assume anything. Yes. As a matter of fact, living cells are easier to observe with this one, as it has phase contrast. Living cells (especially bacteria) are tra...
by Oliver
Mon Sep 12, 2016 8:46 pm
Forum: Beginner's corner
Topic: A drop of aquarium water and other questions.
Replies: 17
Views: 3166

Re: A drop of aquarium water and other questions.

Hello, I took a drop of water from my aquarium and put it under a cover slip. Don't look at the water itself, but scratch some stuff off from rocks, leaves or some algae from the inside of the aquarium glass (do not clean the glass for some time, to allow the build-up of a biofilm). The concentratio...
by Oliver
Sun Sep 11, 2016 5:49 am
Forum: Beginner's corner
Topic: chemistry set
Replies: 1
Views: 922

Re: chemistry set

A Kit to do what? General experimentation as a hobby? Or for specific testing of eg. water quality? Kit for amateur adult chemistry: Not that I know of, because hobby chemists will buy their stuff as they need it. It is also unlikely that you will get a meaningful response about this in this forum, ...
by Oliver
Sun Sep 11, 2016 5:36 am
Forum: Microscopes and optics
Topic: microscope buying question
Replies: 73
Views: 9458

Re: microscope buying question

Brand and model are irrelevant. You need a compound microscope with: a. condenser (very low cost microscopes do not have them but it is recommended) b. objectives 4x, 10x, 40x, (100x oil objective is expensive and not needed unless special purpose) c. 10x eyepieces d. mechanical stage recommended an...
by Oliver
Sun Aug 28, 2016 9:29 am
Forum: Camera systems and imaging
Topic: Camera Vs Eyepiece
Replies: 31
Views: 7530

Re: Camera Vs Eyepiece

Hello, Yes, I can also observe that camera views (images) are of lower quality than through the eyepiece. I always do some post processing to increase the contrast). From what I have found out, it is the generally lower dynamic range of cameras that give me a problem. When looking through the eyepie...
by Oliver
Wed Aug 24, 2016 10:27 pm
Forum: Camera systems and imaging
Topic: measuring the camera's power?
Replies: 5
Views: 1685

Re: measuring the camera's power?

So, there's no way to tell what the power is because the image size changes according to the viewing screen size? magnification = size of image / size of specimen Because the size of the image can be made anything you want, the magnification changes. If you make it bigger on the screen, then the ma...
by Oliver
Sat Jun 11, 2016 6:02 am
Forum: About the website, the magazine and this forum
Topic: Letters to the editor etc
Replies: 3
Views: 3105

Letters to the editor etc

Dear forum members, I am putting together the next issue of the magazine and if you have any articles or images to be put into the magazine, then I am grateful if you send them to me! One forum member also suggested a Letters to the Editor section, and I think it is a great idea. why don't we give i...
by Oliver
Thu Jun 09, 2016 6:28 pm
Forum: Microscopes and optics
Topic: Infinity and 160mm don't play well together, right? LOMO HT-45LU trinoc
Replies: 20
Views: 2773

Re: Infinity and 160mm don't play well together, right?

generally Correct. Infinity microscopes contain a tube lens, to focus the light of the objective and even if the trinoc head itself does not contain a tube lens, then the distances between the 160 objective and the eyepieces might not be correct. infinity scopes can therefore have a larger objective...
by Oliver
Thu Jun 09, 2016 6:18 pm
Forum: Pictures and Videos
Topic: Accidental DIC
Replies: 4
Views: 477

Re: Accidental DIC

DIC similar effects can be done by "oblique illumination", in which a filter is placed into the filter holder to illuminate the specimen from the side. The misaligned camera might have done a similar thing, picking up more light from one side. The shadows on the specimen seem to indicate this, and t...
by Oliver
Fri May 27, 2016 6:40 pm
Forum: For forum members who want to buy and sell equipment
Topic: Market Warnings.
Replies: 13
Views: 1561

Re: Market Warnings.

Hello, yeah, I am a bit paranoid about legal issues, probably also because about too many negative stories that I heard, but I admit, that this might also be cherry picking the negatives on my side. In any case: I have a suggestion or idea and would like to hear your opinion. What about a positive l...
by Oliver
Thu May 26, 2016 8:47 pm
Forum: For forum members who want to buy and sell equipment
Topic: Market Warnings.
Replies: 13
Views: 1561

Re: Market Warnings.

Hello, No public complaints about companies or products! There are legal consequences relating to libel. If you say, for example, that you do not like the color of microscope X, then you are not saying anything wrong about the product. It is your opinion. If you say, however, that seller Y charges t...
by Oliver
Fri May 06, 2016 5:18 am
Forum: Resources (online, books etc.)
Topic: Latest MicrobeHunter Magazine is now online..
Replies: 4
Views: 1457

Re: Latest MicrobeHunter Magazine is now online..

Yes it's now online, articles for the next issue are welcome!
Oliver
by Oliver
Mon Mar 21, 2016 7:39 pm
Forum: Beginner's corner
Topic: DSLR with Toupview?
Replies: 6
Views: 1723

Re: DSLR with Toupview?

I just checked the touptek website. If you can install a TWAIN driver for your DSLR camera, then toupview should be able to recognize the camera:
It says: "ToupView software could be used with other cameras, which support Twain or DirectShow interface"
Oliver
by Oliver
Sun Mar 20, 2016 6:48 am
Forum: Introduce yourself
Topic: Greetings from potentially new microscopist
Replies: 13
Views: 2524

Re: Greetings from potentially new microscopist

hello Bill and welcome to the forum, 1. Compound for adequate magnification (40 to perhaps 2000) to view emulsions which I understand can be quite small some even likely beyond the viewing capability of a light microscope. as already said, 1000x is theoretical maximum (10x eyepiece and 100x objectiv...
by Oliver
Sat Mar 19, 2016 7:40 am
Forum: Beginner's corner
Topic: DSLR with Toupview?
Replies: 6
Views: 1723

Re: DSLR with Toupview?

I also think that ToupView only works with their own cameras. The software is designed to control the camera and I think that it even has a built in driver which recognizes their own cameras. Also, not all dslrs allow for the live transmission of the image over usb, you might want to download some n...
by Oliver
Thu Mar 10, 2016 8:47 pm
Forum: Digital processing
Topic: How do you perform stitching?
Replies: 7
Views: 4484

Re: How do you perform stitching?

MS-ICE also allows you to input a video (and not overlapping images). The software will then extract individual frames from the video to do the stitching. You make a video as you "scan" the slide, you then do not have to worry about sufficient overlaps.

Oliver