Search found 48 matches

by admin
Tue Sep 03, 2019 9:09 pm
Forum: Important announcements
Topic: Forum Update
Replies: 7
Views: 886

Forum Update

Dear Microscopy Enthusiasts! You probably have noticed, that this forum now looks a bit different than it used to. It was updated to the newest version, which was recommended for a variety of reasons, including security and performance. In addition I updated the PHP version (for those who are intere...
by admin
Tue Jul 23, 2019 8:52 pm
Forum: Specimens, samples and slides
Topic: Bubbles in drying mountant
Replies: 1
Views: 533

Re: Bubbles in drying mountant

While I do not know this mountant, I suggest that you try to de-gas it somehow by applying a vacuum. Maybe air was mixed into the medium during transport (shaking) and this one might form bubbles during drying. If the medium shrinks during drying, then this can also cause bubbles. I suggest then to ...
by admin
Tue Jul 23, 2019 8:47 pm
Forum: Beginner's corner
Topic: Phase contrast objectives
Replies: 2
Views: 919

Re: Phase contrast objectives

The phase plate in the objective will reduce the resolution somewhat. But I think that there are other factors that can outweigh the loss of quality (dust, mounting medium etc).... A wrong condenser aperture setting will also reduce the resolution and I still often use it, because I get a larger dep...
by admin
Tue Jul 23, 2019 8:43 pm
Forum: Beginner's corner
Topic: Phase contrast vs. Brightfield
Replies: 1
Views: 607

Re: Phase contrast vs. Brightfield

Go for brightfield first. It is cheaper and once you are more experienced, you can always invest in a more expensive one later. Phase contrast is significantly more expensive. Phase contrast is nice for sure, but it is also not suitable for all specimens. If you use filters than you can get a lot ou...
by admin
Sun Jul 14, 2019 5:56 pm
Forum: Identification help
Topic: Is this a mould spore?
Replies: 2
Views: 1328

Re: Is this a mould spore?

Hello,
yes, it looks like a conidium:
https://en.wikipedia.org/wiki/Conidium

Oliver
by admin
Wed Jul 03, 2019 7:21 pm
Forum: Pictures and Videos
Topic: Help Identify Gram Negative Cocci Please
Replies: 9
Views: 744

Re: Help Identify Gram Negative Cocci Please

Hello, It is not possible to identify bacteria based on microscopic observation alone. Totally unrelated bacteria can have the same shape and bacteria that are related might have different shapes. For identification of the bacteria, you need to do either a DNA study or a biochemical analysis of the ...
by admin
Wed Jun 05, 2019 5:28 pm
Forum: Important announcements
Topic: New Youtube Channel
Replies: 10
Views: 5155

New Youtube Channel

Dear Forum Members, First of all, a welcome to all new forum members, who have recently joined this forum. Many of you may already know that I am not only administrating this forum, but also creating Youtube videos. I have now started a second microscopy-related Youtube Channel and want to invite yo...
by admin
Wed May 22, 2019 7:50 pm
Forum: Illumination Techniques
Topic: Darkfield using Olympus BH2/BHS
Replies: 5
Views: 1945

Re: Darkfield using Olympus BH2/BHS

Hello, 1. Check if the condenser has a push on filter holder (and not a swing out type). The filter holder sometimes contains a blue glass filter. The patch stop goes on top of the blue glass. 2. If you do not have a filter holder at all, then make yourself a patch stop using overhead foil. Tape it ...
by admin
Sun Apr 21, 2019 8:33 pm
Forum: Identification help
Topic: Can't find an answer on what these black lines could be?
Replies: 4
Views: 2677

Re: Can't find an answer on what these black lines could be?

Hello,
Had similar lines on my slide. Try to clean the slide first before use by dry-rubbing it with a paper towel. Could be some stuff left over from the slide-manufacturing process.
greets, Oliver.
by admin
Wed Mar 13, 2019 9:06 pm
Forum: Introduce yourself
Topic: Olympus BH2 - AFocal vs projection eyepiece?
Replies: 3
Views: 1899

Re: Olympus BH2 - AFocal vs projection eyepiece?

Hi,
in my setup I project it directly into the camera, but there is the problem of stray light (and thus lower contrast) if you do not have Koehler illumination. So this might be seen as another advantage for the afocal setup.
Oliver.
by admin
Tue Mar 12, 2019 11:13 pm
Forum: Introduce yourself
Topic: Olympus BH2 - AFocal vs projection eyepiece?
Replies: 3
Views: 1899

Re: Olympus BH2 - AFocal vs projection eyepiece?

Hello, The NFK projection eyepieces are so-called compensating eyepieces. This means that they correct lens errors (aberrations) that are still present from the objective. The NFK eyepieces are designed to project the image diretly on flat photographic film or sensor. They are not designed for afoca...
by admin
Tue Jan 29, 2019 9:45 pm
Forum: Introduce yourself
Topic: Hello, from Vienna, Austria -(Technically Mobile, Alabama USA)
Replies: 10
Views: 2000

Re: Hello, from Vienna, Austria -(Technically Mobile, Alabama USA)

Hello Cfloridanus! I am the administrator of this forum and also want to welcome you personally - because I also studied at the University of Vienna (Microbiology). I now live in Upper Austria and hope that you enjoy your stay here in Austria. At this point I also want to "advertise" my Youtube Chan...
by admin
Mon Aug 13, 2018 9:37 pm
Forum: Illumination Techniques
Topic: How is this not DIC? Oblique illumination? HOW?
Replies: 10
Views: 3532

Re: How is this not DIC? Oblique illumination? HOW?

Oblique illumination - several points: 1. Not all specimens will produce a good result. To test it, I would try to make leaf-impressions with glue and then observe the glue, because this worked fine for me. White glue on bottom side of leaf, let it dry, peel it off, observe it. Stomata should be vis...
by admin
Sun Aug 12, 2018 6:02 am
Forum: Illumination Techniques
Topic: How is this not DIC? Oblique illumination? HOW?
Replies: 10
Views: 3532

Re: How is this not DIC? Oblique illumination? HOW?

Hello,

I once wrote an article about it, but will also do a video soon:
http://www.microbehunter.com/oblique-illumination/

Oliver
by admin
Sun Jan 14, 2018 8:54 pm
Forum: Important announcements
Topic: Announcement
Replies: 7
Views: 8512

Announcement

Hello forum members!



Link to the new youtube channel (please subscribe):
https://www.youtube.com/channel/UCDpKY8 ... BPNzNsbLug

greetings, Oliver
by admin
Mon May 29, 2017 5:50 am
Forum: Pictures and Videos
Topic: Questions from our town's old reservoir
Replies: 6
Views: 1045

Re: Questions from our town's old reservoir

Hello, first of all, great pictures. Microscopy alone often does not provide enough information to identify something down to the species level. And: due to the large number of yet unclassified microorganisms, it is not even unlikely that you are dealing with a new species. The typical spiral shape ...
by admin
Mon May 15, 2017 4:54 am
Forum: Sandbox
Topic: test post
Replies: 3
Views: 3175

Re: test post

I was just wondering if the forum still works, because there are few posts for some days. (I will remove this thread anyway)
Oliver.
by admin
Sat May 13, 2017 8:29 pm
Forum: Sandbox
Topic: test post
Replies: 3
Views: 3175

test post

this is a test post
by admin
Fri Nov 25, 2016 10:51 pm
Forum: Important announcements
Topic: Forum Rules!
Replies: 0
Views: 2865

Forum Rules!

These rules are occasionally updated, therefore if is the obligation of every forum user to check this post regularly. Rules: 1. No bad language of any kind. 2. No personal attacks of any kind. This includes ridicule, condescending remarks or threats. 3. No criticism of products that you are not sat...
by admin
Thu Nov 24, 2016 7:42 pm
Forum: Sandbox
Topic: easyzzom test
Replies: 11
Views: 5540

easyzzom test

by admin
Fri Nov 18, 2016 6:43 am
Forum: Important announcements
Topic: 403 Forbidden Error
Replies: 13
Views: 17384

403 Forbidden Error

Hello, Some users are experiencing a 403 Forbidden error. I hope that this is a temporary error. If you are encountering this, then I want to confirm to you that your user account was NOT cancelled. Currently I do not know the reason for this error, and some users do not experience it. I have not do...
by admin
Thu Nov 17, 2016 9:13 pm
Forum: About the website, the magazine and this forum
Topic: 403 Forbidden Error
Replies: 2
Views: 2976

403 Forbidden Error

Hello, Some users are experiencing a 403 Forbidden error. I hope that this is a temporary error. If you are encountering this, then I want to confirm to you that your user accounts was NOT cancelled. Currently I do not know the reason for this error, and some users do not experience it. I have not d...
by admin
Sat Sep 24, 2016 9:28 pm
Forum: Camera systems and imaging
Topic: USB3 Digital Cameras
Replies: 8
Views: 2946

Re: USB3 Digital Cameras

Hi, I myself have a USB 3 Toupcam (5MP). I was/am experiencing trouble connecting it with USB 3 speed, it will often connect only with USB2 speed. It is probably a driver problem. I wrote an article about it here: http://www.microbehunter.com/microbehunter-magazine-issue-53/ The camera itself is fin...
by admin
Sun Sep 18, 2016 10:00 pm
Forum: About the website, the magazine and this forum
Topic: Plagiarism allegations in the forum and other issues
Replies: 8
Views: 4823

Re: Plagiarism allegations in the forum and other issues

Hello, but has the apology/explanation been edited above - I still can't really understand what is meant by it I have removed a few lines, which I consider best to be left out, and included [... removed by admin ...] at this place. I request that private issues are left out of the public forum. Exce...
by admin
Sun Sep 18, 2016 4:03 pm
Forum: About the website, the magazine and this forum
Topic: Plagiarism allegations in the forum and other issues
Replies: 8
Views: 4823

Plagiarism allegations in the forum and other issues

Dear forum members, I have removed a complete thread and would like to explain the reason. Yesterday a forum member posted polarized light images of crystals and it turned out that these images belonged to another member. The poster denied having plagiarized these images and the response from other ...
by admin
Mon Sep 12, 2016 7:56 pm
Forum: Microscopes and optics
Topic: microscope buying question
Replies: 73
Views: 9268

Re: microscope buying question

Hello, I think the microscope I had ordered and cancelled 2 weeks ago had all those requirements, can you confirm this? From a first quick glance, it does seem to have these features, but the choice of a microscope (especially if used for hobby purposes) can, in my view, not only be limited to the f...
by admin
Fri Aug 19, 2016 7:27 pm
Forum: Off Topic
Topic: Windows 10
Replies: 32
Views: 14753

Re: Windows 10

Dale, In issue 50 of the magazine, I reported about putting a CD ROM lens in front of an iPad camera. I did not glue it on. I would probably try to glue the lens to a microscope slide (on the side) using silicone and then somehow hold the slide in front of the camera. But the slide increases the dis...
by admin
Mon Aug 15, 2016 8:50 pm
Forum: Off Topic
Topic: Windows 10
Replies: 32
Views: 14753

Re: Windows 10

I am also running Windows 10, and generally am satisfied, but I experience some (driver ?) problems with my microscope camera. I do not know if this is Win 10 specific though. Specifically, the USB 3 microscope camera sometimes connects with USB 2 speed, and I have not figured out why. There is the ...
by admin
Thu Jul 14, 2016 7:36 pm
Forum: About the website, the magazine and this forum
Topic: Private Massaging (PM) issues
Replies: 1
Views: 2779

Private Massaging (PM) issues

Dear Forum Members, Several people had problems sending Private Messages (PM). 1. I updated the Forum software to the newest version yesterday. This was probably not the reason, but I mention it for sake of completion. 2. The maximum number of PM was limited to 100 messages. All further messages are...
by admin
Wed Jul 13, 2016 5:01 am
Forum: Miscellaneous
Topic: Deleting or editing topic in for sale forum
Replies: 1
Views: 985

Re: Deleting or editing topic in for sale forum

edit your post and include a line that says that the product has been sold. keep the original text for reference, but add a line. deleting of posts directly is not possible, as this would disruot the thread. oliver.