MicrobeHunter.com Microscopy Forum

I pulled the objectives off and looked at them. Now I'm wondering if the 10x that I thought had "gunk" on the edge of the lens is missing lens adhesive. The 40x has a nice smooth bead of adhesive around the lens but the 10x looks like it's been improperly cleaned with the wrong solvent or maybe had ...

I tried the AO 134 10x eyepieces from my AO 569, but sadly they do not quite fit. The Meiji HWF10X are about 0.909 - 0.910 inches in diameter, while the AO's are 0.911 - 0.912, or 2 thousandths too large (too lazy to convert to metric). I did plug the HFW10X into the AO 569 and saw the field of view...

Thanks Michael, I just watched a random youtube video on kohler illumination and what they said was consistent with what you're saying. But that's not the problem. The problem is I'm an idiot and I didn't realize there is a separate substage focus control for the condenser. What's even more ridiculo...

Ok, got the reticle out using some machine tool calipers as an adjustable wrench.

Ok, I received the scope today and so far it seems pretty good. The scope is mostly very clean except for a some paint chips and some oxidation on the bottom of the objectives and the slide holder. The focus and stage controls seem smooth and light, not stiff. The objectives are all "SM plan" semi p...

Looks like someone bought the Olympus, perhaps from this forum?

Ok, thanks. I probably won't even use the 100x, but if I do, I will be careful with the oil. The Meiji stereo microscopes are well regarded, but there isn't much talk about their compound microscopes. I figured it's made in Japan and was a few grand (?) when new, so can't be that bad. I would be cur...

Hi All, I just bought a Meiji ML2000L for $150 here: https://www.ebay.com/itm/394256543784? Is this a reasonable deal? I'm just looking at pond water with my 5 year old. Yes, it would be nice to have phase contrast and a trinocular head, but that means more money of course. I also noticed the stage ...

Yes, I understand how white LEDs function and it makes sense that you could have non-uniform color temperature, but that is not what is happening in this case. There is only about a 1% gradient in color temperature in the FOV. In the image with the yellow ring, the center area inside the ring is blo...

Thanks scarodactyl, I will keep that in mind.

I believe the yellow ring you're seeing is just a photographic artifact. Probably something to do with auto white balance and the center being blown out. In person I can't discern any difference in brightness or color temperature within the field of view. The attached image is a better representatio...

Ok thanks, good to know there is a chance of getting a lens to thread on a bit. I got a flashlight and sanded the head down with a belt sander until it fit the light mounting hole. I tried to machine a taper on the lathe but gave up due to the difficulty of mounting the flashlight in the chuck. The ...

I have access to a lathe, however I don't think I would be able machine new threads or chase 48mm threads with something that delicate.

Seems like a poorly machined 48mm might fit

Scarodactyl, I beat you to it. I brought home some calipers and thread gauges, as well as a 48mm Barlow. As far as I can tell, the AO is 1 7/8ths thread with 32 threads per inch. I tried threading the 48mm/0.75mm pitch Barlow and it unfortunately does not fit. The 48mm is only 14 thousands larger in...

Thanks Pete. The scope is in excellent condition and I'm really happy with it. The o-ring is a good idea, although I was actually thinking of machining the flashlight to fit the taper. dtsh, it's definitely not 1 3/8ths. I measured it with a yard stick and it's more like 1 7/8ths. I will try to meas...

Hi All, I just bought an AO 569 on ebay to look at miscellaneous stuff (bugs, plants, etc.) with my young daughter. The scope itself it great (better than the relatively expensive Scienscope Olympus SZ knockoff here at work), but of course the accessory lenses are no longer available and are hard to...