I always greatly enjoy your content. I look forward to seeing your channel grow, and gain a wider audience. You deserve it 👍

@CuriousScientist

10 ай бұрын

Thank you very much!

Enjoyable video. A question: at 17:31 you use calibration slide to scale a 100 um marker. Is this added to your camera image during image taking of the calibration slide and the semi chip, and if so, how? In your camera's software? Or did you only add this to the KZread video to teach that with same magnification that one can manually identify a scale and to know the scale of features on the specimen based on the magnification and the calibration slide? Thank you.

@CuriousScientist

6 ай бұрын

Thank you! The scale that you see is a calibration slide under the microscope. I recorded a clip of the scale, then I drew the scale over 100 um equivalent of length (10 divisions since the scale is 10 um/div, so 10x10 = 100) in the video editor software. Then I just put the transistor under the microscope without moving or changing anything else. It is a demonstration of how to calibrate a length scale for a given magnification and then use it to measure features of stuff under the microscope. Once you know that, for example, 100 um is 500 pixels of the picture, you can then use this equivalence and recalculate any number of pixels to micrometers. For example, with the above example, if your feature is 840 pixels long, then you can first determine the length of 1 pixel (1 px / 500 px * 100 um = 0.2 um), then multiply it by the number of pixels you have (0.2 um * 840 = 168 um) which gives you the length of a random feature. You must redo this exercise when you switch lenses because of the different magnification. I hope this explanation is good enough.

Were you able to 23:50 show the resolution you get at 2000x ? My understanding is that the theoretical limit is 1600x. I want to look at knife edge burrs. Any suggestions ?

@CuriousScientist

5 ай бұрын

2000x magnification is theoretically possible when you use the 100x objective lens and the 20x eyepiece. It works, but due to the very shallow depth of field, it is not the most pleasant magnification to work with. The magnification is smaller when I look through the camera, but I don't know the exact value, I never attempted to determine it. To look at knife-edge burrs, you probably don't need such a high magnification.

Thanks for your nice unpacking video. When I bought the similar version there was no review on KZread available. I am happy that in your case all objectives and oculars came as ordered. This was not the case with mine but I am still happy with the microscope. Question: did you manage to use the 100x dry objective on silicon dies?

@CuriousScientist

7 ай бұрын

Thank you! Yes, I had the same situation that when I ordered it, there were no resources on the instrument. That's why I made this video, so future buyers can judge the microscope better. The 100x lens works, but it is not super impressive. I guess I could get good images out of it with focus stacking, but I feel that the pictures are already soft and the softness can not be improved with the stacking. So I so far avoided it. Also, the features on the chips I was looking at were "too large" with the 100x lens, so it was a bit hard to get a good image. I have been actually following you for a while both here and on IG (I really like the silicondoodles series!). Impressive work. I will send you a few pictures on IG just to show how the 100x looks like.

Are you planning on modifying it with stepper motors and rotary encoders to improve the focusing? You could use one encoder to control multiple motors as you would only move one at a time.

@hullinstruments

10 ай бұрын

That'd be sweet

@CuriousScientist

10 ай бұрын

Yes! It is even written in my blog article! 😉

Nice scope! I have a similar one, and it's fun to focal stack with it!

@michaelschneider8667

10 ай бұрын

I have the same too, just with polarizationfilter. I use for Focusstacking Affinity Photo 2, what do you use ?

@Dartheomus

10 ай бұрын

@@michaelschneider8667 Ahh nice! I simply have an Omax phase-contrast scope that I put some old Olympus objectives on. As far as focal stacking, I've had pretty good luck using Helicon Focus both for normal macro work as well as for microscopy like this. :)

@CuriousScientist

10 ай бұрын

Thanks! Yes, focus stacking is fun with this microscope! Just wait until I make the axes motorized. 😎

@Dartheomus

10 ай бұрын

@@CuriousScientist I was honestly thinking the same thing. My lab has a $100k scope that does this... it controls the stage (x and y) as well as the z-direction for stacking. I was thinking it wouldn't be that hard to build my own. I'm looking forward to your project for sure!

You are pro1️⃣

@CuriousScientist

10 ай бұрын

I am far from it yet, but thank you!