MicrobeHunter.com Microscopy Forum

Having purchased a early Ortholux I with a serial number in the 360000s marked D.R.P from a charity site, I wonder what the history of the scope is, There is a tag indicating it was serviced in San Antonio in 1989. For illumination the standard optics are gone, someone put a GE 1468 with its bayonet...

Salt crystals, particularly in different modes of light are worth a look.

Gerard

The original bulb is 6v 30 https://www.ebay.com/itm/NEW-OSRAM-8100 ... SwGDNcqnlT

Saul,

Can you tell me what a Type 2a power supply is?

I looked on the web and haven’t found a description.

I have been fooling around and ran into Ohm’s law with the current limits and voltage drop in small conductors.

Gerard

I own a number of AO scopes and have found a number of 43X objectives with damaged front lens, probably from collisions with slides
Has anyone tried to repaired one of these? Has anyone tried cement or nail polish to level on the element? Is it worth doing?

Gerard

Zeiss delamination isn't limited to objectives. I got a Zeiss stand from surplus of a University and I noticed the image through both eyepieces were partially obscured by distortions and rotating each eyepiece caused the distortions to be move. Disassembling the eyepieces revealed thick lens element...

Thanks,

I will do that.

Gerard

Well I saw an Ortholux and a charity website and saw by its serial number it was a later one that what I owned. This model had a field iris and a trinoc head. It had no objectives. Well they shipped it in a box with a little brown paper, it was criminal, The head was shaken off. I had to redo and ti...

This forum was the deciding factor in my decision.
I teach Genetics and Evolution online.
I wish my students had access to these videos.

Ordering through Amazon was easy.

Gerard

Anyone know about this?
https://www.thehindu.com/sci-tech/techn ... 989639.ece

Gerard

Like a number of you I had a childhood that involved the curved glass of both telescopes and microscopes. Add to this ham radio, my first introduction to the invisible. I have a PhD in biology and karyotyped a number of minnows, and discovered the hybrids between Phoxinus eos and Phoxinus neogaeus w...

I find the free programs Ccleaner and Glary utilities very useful. There can be gigabytes of detritus on your system

Gerard

Maybe this is why I own 4 AOs, 2 Leitz and 2 Zeiss. I cant get over how much microscope you can buy for about $100.

Gerard

Thanks for posting this. Many of us have telescopes but lice under cloudy skies. Microscopes are more reliable
Gerard

I have karyotyped a lot of minnows and they are 2n=50.
I would guess what you have here is Umbra limi which is in the pike family. 2n=22, large metacentric chromosome s used in various studies

Gerard

My last acquisition was at a charity site- A monocular series 10 with a strange condenser. Well when the scope arrived included was a paper to using darkfield to detect Treponema spirochetes in blood. The scope had health department stickers on it. Well the condenser is a 218F. Does any one use it. ...