Search found 139 matches

by Tom Jones
Fri Aug 05, 2016 4:20 pm
Forum: Beginner's corner
Topic: Understanding the Light Microscope - tutorial by Peter Evennett
Replies: 5
Views: 2169

Understanding the Light Microscope - tutorial by Peter Evennett

This link was posted a couple of days ago on the photomacrography.net Beginners Micro forum by GaryB. Peter Evennett does an excellent job of demonstrating, with a modified microscope, microscope light paths and image formation fundamentals. No math and no ray diagrams! Just a modified Zeiss microsc...
by Tom Jones
Fri Aug 05, 2016 2:39 am
Forum: Pictures and Videos
Topic: Choppy video
Replies: 7
Views: 1148

Re: Choppy video

The manufacturer's website for the MA-500CK (http://www.amscope.com/5-0mp-microscope-digital-camera-compatible-w-windows-mac-os-4-scale-calibration-kit.html#product_tabs_description_tabbed) says the frame rate is: "30 f/s @ 640x480, 8 f/s @ 2592x1944 pixels" It doesn't mention anything in between. I...
by Tom Jones
Mon Aug 01, 2016 3:19 am
Forum: Beginner's corner
Topic: stains can't get it yet.
Replies: 13
Views: 3168

Re: stains can't get it yet.

Not quite... The specimen is smeared onto the slide, allowed to air dry, then mildly heat fixed, generally by flaming in a bunsen burned flame. My first microbiology professor told us to pass the slide (smear up) back and forth through the flame a few times, then lay the bottom of the slide onto the...
by Tom Jones
Wed Jul 27, 2016 1:32 pm
Forum: Beginner's corner
Topic: tiny flowes under a microscope test photos
Replies: 10
Views: 2244

Re: tiny flowes under a microscope test photos

If you want to get rid of the circle, and fill the sensor with the image, you can use a digital zoom. Zoom in just enough to eliminate the circle, and then take the shot. It takes practice to hold it still, but it works pretty well. It will work very well if you have some mechanism to hold it steady...
by Tom Jones
Sun Jul 24, 2016 12:14 am
Forum: Pictures and Videos
Topic: Microworld Magic
Replies: 18
Views: 1009

Re: Microworld Magic

:lol: :lol: :lol:

You didn't even need the whip!

Tom
by Tom Jones
Fri Jul 22, 2016 3:42 pm
Forum: Beginner's corner
Topic: today's compound microscope
Replies: 12
Views: 2661

Re: today's compound microscope

Viruses are cultured in living cells such as HeLa, or another cell line. The cells themselves, with the virus still inside, and/or the virus particles themselves after exiting the cells, are then embedded in some form of epoxy. The epoxy block is sliced very, very thin (less than 100 nm :shock: ) wi...
by Tom Jones
Wed Jul 20, 2016 2:17 am
Forum: Pictures and Videos
Topic: DIY Rotating Video Glide Stages
Replies: 9
Views: 1440

Re: DIY Rotating Video Glide Stages

Hi Charlie, You're welcome! It took quite awhile before I finally figured out what I wanted to do. I had a rough drawing sitting on my counter for almost a year before I finally decided to just start cutting metal and see what happened. Fortunately they aren't too hard to make. My machining skills l...
by Tom Jones
Wed Jul 20, 2016 1:37 am
Forum: Pictures and Videos
Topic: 5 stereo. Crab larva, Geranium robertianum,aphid... more
Replies: 24
Views: 2718

Re: 5 stereo. Crab larva, Geranium robertianum,aphid... more

It took me awhile to get used to it a couple of years ago. Now I can get most images in 3-4 seconds from about 24" away from the screen.

I have to say I LOVE the crab larva, and it's perfect for stereo.

Tom
by Tom Jones
Tue Jul 19, 2016 7:24 pm
Forum: Pictures and Videos
Topic: DIY Rotating Video Glide Stages
Replies: 9
Views: 1440

Re: DIY Video Rotating Glide Stages

These last two photos show the bottom of the assembly. The first shows the grease plate assembly and the BX adapter plate, and the second photo shows them assembled and ready to mount on either the BH-2/BHS or the BX series of microscope. Sadly, I don't have any drawings or good measurements for any...
by Tom Jones
Tue Jul 19, 2016 7:17 pm
Forum: Pictures and Videos
Topic: DIY Rotating Video Glide Stages
Replies: 9
Views: 1440

Re: DIY Video Rotating Glide Stages

This post details the final version of my rotating glide stage for the BX/BH-2 series of microscopes. As I recall, the stage mount on the Nikon Labophot 1 is the same as the BH-2 so the same style will probably work there. Other microscopes would probably need to have different adapter plates design...
by Tom Jones
Tue Jul 19, 2016 6:34 pm
Forum: Pictures and Videos
Topic: DIY Rotating Video Glide Stages
Replies: 9
Views: 1440

Re: DIY Video Rotating Glide Stages

Here are three images of the Lomo rotating glide stage for compound microscopes. It cost me $75 on EBay. This was the first glide stage I tried. Before this, the only glide stages I had ever seen were essentially flat-top stage plates without slide clips or the mechanical slide holder. They were des...
by Tom Jones
Tue Jul 19, 2016 6:01 pm
Forum: Pictures and Videos
Topic: DIY Rotating Video Glide Stages
Replies: 9
Views: 1440

DIY Rotating Video Glide Stages

Several people were intrigued by the smooth panning I was able to achieve in the Mayfly Nymph video with my home made glide stage. (http://www.microbehunter.com/microscopy-forum/viewtopic.php?f=6&t=3436). billben74 asked for pictures, so here we go. The first photo shows the SZH glide stage in place...
by Tom Jones
Tue Jul 19, 2016 2:48 pm
Forum: Pictures and Videos
Topic: Mayfly Nymph
Replies: 14
Views: 2343

Re: Mayfly Nymph

billben74 - I'll be posting several pictures and a description of my glide stages shortly in another thread.

Tom
by Tom Jones
Mon Jul 18, 2016 2:29 am
Forum: Pictures and Videos
Topic: Mayfly Nymph
Replies: 14
Views: 2343

Re: Mayfly Nymph

Thanks everyone :D ! I'm glad you enjoyed it. I forgot to mention too, it was shot in dark field, utilizing the ILLD dark field base The Mayfly was an accidental find, and I had never seen one before. Rather fascinating to watch, particularly the tracheal gills. He survived a couple of weeks before ...
by Tom Jones
Sun Jul 17, 2016 4:06 pm
Forum: Pictures and Videos
Topic: Mayfly Nymph
Replies: 14
Views: 2343

Mayfly Nymph

Here's a video of a Mayfly nymph I found a few weeks ago. It was among a clump of algae floating on the surface at the edge of a very slow moving outflow stream from a local lake. The microscope is an Olympus SZH, and the camera used is a Panasonic GH4. The nymph was in a glass petri dish with 5mm o...
by Tom Jones
Wed Jul 06, 2016 2:23 am
Forum: Microscopes and optics
Topic: Question on Olympus BH-2
Replies: 29
Views: 7632

Re: Question on Olympus BH-2

Hi Bill, Sorry for the really belated reply :oops: . Too much time doing other stuff... If you haven't already solved your mirror and gear problem, sometimes the gears come up on eBay. I believe they're the same as on the BHT/BHTU. The same goes for the mirror. I don't have either of those. The easi...
by Tom Jones
Thu Apr 14, 2016 2:56 am
Forum: Microscopes and optics
Topic: Question on Olympus BH-2
Replies: 29
Views: 7632

Re: Question on Olympus BH-2

Bill,

I'm glad it was useful.
I promise you're going to love the BHS and the DPlans! Or the BHT for that matter.
If you end up short a part or two, let me know. I have some spares and may be able to help.

Tom
by Tom Jones
Wed Apr 13, 2016 11:21 pm
Forum: Microscopes and optics
Topic: Olympus BH-2 eyepiece question
Replies: 15
Views: 3054

Re: Olympus BH-2 eyepiece question

Bill,

If you have a trinoc head, the -H eyepiece also can be used to parfocalize the camera, too, if there is no reticle. Match the camera focus with the -H in the right eyepiece slot, with the locator pin in place so it focuses when you turn it, then focus your left eyepiece normally to match.

Tom
by Tom Jones
Wed Apr 13, 2016 11:14 pm
Forum: Microscopes and optics
Topic: Question on Olympus BH-2
Replies: 29
Views: 7632

Re: Question on Olympus BH-2

Bill, The BH-2 series are very nice microscopes. I used them in a clinical lab for twenty years. The last ten years we had the BX-40's too. Lots of used parts and accessories available. The BH-2's are sturdy enough I use several of them (BHTU's) for outreach programs. In addition to what lorez menti...