Davids...are you in the US? If so, I'd be interested in your Mitty 20x. Please reply or PM me...Ray

I hope his website can stay up going forward so that his work can continue to live on. I was reluctant to breach this topic, but now that it's open, I'm wondering if anyone has been in contact with Robert's widow/estate to decide how best to preserve the massive amount of important information cont...

You may have answered this before, but why is it important to cover the full mag range with a single lens? Thanks for the question, Ray. In fact, I think I already answered, but I don't mind answering again; it even helps me remember, because my memory is not good, nor is my attention; I'm diagnose...

Thanks Ray; It's a great suggestion and more practical to implement. Something like? https://www.gorillatough.com/product/gorilla-double-sided-tape/ Yes, like that, but I've found Gorilla Tape products to be a bit aggressive, and often leave residues. Honestly I've been using tape I picked up from ...

Hello, unexpectedly I have two identical granite stones -+ A3, which were from a kitchen, about 30mm thick. They are perfectly flat, polished and are very heavy. I remembered that they can provide a good anti-vibration base to place my FLM ballhead. Do you suggest any quick and stable way to attach...

You may have answered this before, but why is it important to cover the full mag range with a single lens?

Out of interest, will you be using the backlight to help with background removal for coin photography? If so, I have a shared interest in the results you get! Yes, it is for ancient coins. I have a commission from a numismatic archaeologist at a Spanish university to replace/augment their current c...

Well, I dropped one from waist height onto a bare concrete floor. I think it is de-centered now, but still produces pretty good images overall. The problem I saw with most of the bad lenses was "delam". I don't know if this happens when a lens is allowed to "fall or drop" but it's definitely bad ne...

I purchased several Mittys, 5x, 10x, 20x, 50x, and every one of them had issues. The only good ones I've purchased were brand new. Not sure how much of a shock is required to damage them though. Some looked fine by inspection, but produced a poor image. Others had delam. I don't think the delam is d...

Looks like a nice microscope Z-stage, and decent XY-stage as well, and you get the objective as well! You'll need to research to find the manual as it is discontinued, but appears to be a 10:1 zoom lens with a high quality objective. Great score for $81+shipping.

Alan Wood wrote: ↑

Wed Apr 10, 2024 11:14 am

https://www.ebay.com/itm/173375345447

Alan Wood

Thanks Alan! This one looks good at 75mm diameter. I'll see if I can find it from a US seller.

Ray

Igor wrote: ↑

Wed Apr 10, 2024 10:17 am

ray_parkhurst wrote: ↑

Wed Apr 10, 2024 7:55 am

But I can't tell how large the illuminated are is.

Dimensions:
2024-04-10_20-15-48.png

Thank you! I ordered one to try.

Has anyone seen a small backlit stage? Round is preferable, perhaps 100mm diameter. See if this might suit your purposes: https://aliexpress.ru/item/1005006132420668.html?sku_id=12000035904315191&spm=a2g2w.productlist.search_results.3.1a653f428LGVJP Looks very good! But I can't tell how large the i...

Has anyone seen a small backlit stage? Round is preferable, perhaps 100mm diameter.

Edited to add: I picked up a 6.5" round LED light from Amazon to try it out.

I did a lot of this kind of work in my last job at a MEMS startup (Cavendish Kinetics, now owned by Qorvo). Quality was one of the many hats I wore at that company. Most of the work was looking at failure analysis of the packaging, but occasionally I did some actual MEMS xsections, and I did some sl...