Search found 11 matches

by AndyMilman
Mon Sep 25, 2017 12:56 am
Forum: Microscopes and optics
Topic: Rewiring microscopes and making them Brighter
Replies: 3
Views: 1423

Re: Rewiring microscopes and making them Brighter

Further thoughts on brighter bulbs I'm still working on increasing the brightness of Meiji vertical illuminators. They originally were intended for 6V, 30 W bulbs (and come from the ML2000 series). They're not as bright as what I need for viewing dark biological specimins--like mold on a grape-- ep...
by AndyMilman
Sat Jul 29, 2017 3:33 am
Forum: Home-made microscope adaptations
Topic: Quick cheap & easy LED conversion for my Halogen 'scope
Replies: 72
Views: 26984

Re: Quick cheap & easy LED conversion for my Halogen 'scope

After reading this forum, I tried what I think you did: I bought a few different kinds of LED replacements for the halogen bulb in the vertical illuminator in one of my Meiji microscopes. I had been looking for a cheap way to increase the episcopic illumination. (I haven't tried it on the lower illu...
by AndyMilman
Sat Jul 29, 2017 3:14 am
Forum: Microscopes and optics
Topic: Rewiring microscopes and making them Brighter
Replies: 11
Views: 2574

Re: Rewiring microscopes and making them Brighter

:cry: :roll: :oops: I've read the comments and they're correct. I really don't know how long a halogen bulb is supposed to last when used at the rated voltage but increasing the voltage will reduce the lifetime. But the bulbs are cheap and easy to replace. OTOH, I don't want to replace them every ot...
by AndyMilman
Wed Jul 26, 2017 11:15 pm
Forum: Microscopes and optics
Topic: Rewiring microscopes and making them Brighter
Replies: 3
Views: 1423

Rewiring microscopes and making them Brighter

I have collected more than a dozen Meiji microscopes, many of which have dead power supplies. Replacing one of them with a new Meiji power supply is beyond my resources, so I tried making my own. It was surprisingly easy. In essence, 1) I disconnected what wires I needed to, added a new plug to rece...
by AndyMilman
Wed Jul 26, 2017 11:14 pm
Forum: Microscopes and optics
Topic: Rewiring microscopes and making them Brighter
Replies: 11
Views: 2574

Rewiring microscopes and making them Brighter

I have collected more than a dozen Meiji microscopes, many of which have dead power supplies. Replacing one of them with a new Meiji power supply is beyond my resources, so I tried making my own. It was surprisingly easy. In essence, 1) I disconnected what wires I needed to, added a new plug to rece...
by AndyMilman
Wed Jul 26, 2017 9:36 pm
Forum: Camera systems and imaging
Topic: Advice re: Real time digital camera for microscope
Replies: 3
Views: 1863

Re: Advice re: Real time digital camera for microscope

I've been using a Canon T3i DSLR for a few years, making pictures through the photo port on my microscopes. The results have, for the most part, been excellent. If you discount operator error. I just need to use an HDMI cable to connect the camera directly to a monitor. This gives a good, but not ex...
by AndyMilman
Wed Jul 12, 2017 9:29 am
Forum: Camera systems and imaging
Topic: USB3 Digital Cameras
Replies: 8
Views: 3768

Re: USB3 Digital Cameras

So. Using a USB camera can be complicated. Taking still images of moving critters (to use the scientific term) can be difficult because of the details of how the computer and the USB camera interact. The camera manufacturer has no control over the computer hardware and drivers, of course, which can ...
by AndyMilman
Thu Sep 22, 2016 5:03 pm
Forum: Camera systems and imaging
Topic: USB3 Digital Cameras
Replies: 8
Views: 3768

Re: USB3 Digital Cameras

I think most good DSLR's will take both video and stills. That's not my problem. I'm only interested in stills at the moment. (BTW, my Canon T3i works very well for both.) The problem is that stills are messed up if the subject moves; it looks like the CCD is being read sequentially at the rate the ...
by AndyMilman
Wed Jul 27, 2016 4:42 pm
Forum: Camera systems and imaging
Topic: USB3 Digital Cameras
Replies: 8
Views: 3768

USB3 Digital Cameras

I have a 10 mp Omax USB camera, which takes good stills of stationary objects, but distorts moving objects. A moving object will have each individual part in focus, but the whole image is bent out of shape. The front (say) is in one place, but the back has moved away from it's original position, rel...
by AndyMilman
Sun May 15, 2016 2:28 pm
Forum: Illumination Techniques
Topic: Phase Contrast on new scope
Replies: 16
Views: 5439

Re: Phase Contrast on new scope

Amscope & Phase Contrast: I've been using an Amscope T690 with the phase contrast condenser & objectives for several years. Amscope is terrible about providing information on how to use their microscopes; you have to figure things out for yourself, but this product is pretty good. I also have a few ...
by AndyMilman
Sat May 14, 2016 6:54 pm
Forum: Pictures and Videos
Topic: Mite ?
Replies: 12
Views: 1453

Re: Mite ?

Does anybody know what this is? It looks similar to the dust mite, but I've found them in the debris filtered out of my fish tank.