Search found 101 matches

by jb89
Fri Jun 19, 2020 4:17 pm
Forum: Home-made microscope adaptations
Topic: American Optical LED Conversion
Replies: 5
Views: 214

Re: American Optical LED Conversion

It looks blue in the photo because is very blue. Human eyes have an amazing capacity to compensate for these things. I’d guess that LED is at least 6000K, and possibly a lot higher. The original bulb was probably somewhere between 2000K and 2500K depending on how hard it was driven. I thought I had...
by jb89
Fri Jun 19, 2020 2:46 pm
Forum: Home-made microscope adaptations
Topic: American Optical LED Conversion
Replies: 5
Views: 214

Re: American Optical LED Conversion

The LED I'm using is quite white(neutral white), far better than the very warm white from the original bulb, I'm not sure why it looks so blue in the picture but there are quite a few different color temperatures available for LEDs I have a standard 5mm LED rated at 15,000 mcd, I'm not sure how that...
by jb89
Fri Jun 19, 2020 7:02 am
Forum: Microscopes and optics
Topic: Zeiss Standard - help
Replies: 4
Views: 176

Re: Zeiss Standard - help

Sometimes the spring loaded studs are pretty stuck, you can make it return to normal with a couple drops of kerosene(use paper towels or something to keep it from dripping on any optics) To attach these you loosen the thumbscrew and then slide the top part against the spring loaded plunger it will t...
by jb89
Fri Jun 19, 2020 1:44 am
Forum: Home-made microscope adaptations
Topic: Printing filters?
Replies: 4
Views: 384

Re: Printing filters?

I have attempted to print darkfield stops (3D print) I tried about 20 different sizes with 3 microscopes and never got it working as well as I would have liked. Not sure if acetate would work due to transparency as MicroBob mentioned.
by jb89
Fri Jun 19, 2020 1:42 am
Forum: Home-made microscope adaptations
Topic: American Optical LED Conversion
Replies: 5
Views: 214

American Optical LED Conversion

I've had a little bit of free time between semesters and finally got around to finishing some projects I have been working on and this is one of them I took my original AC-AC power supply for my AO 570 and converted it to a DC power supply, I changed the on-off bulb in the power supply to a nice blu...
by jb89
Sun Mar 08, 2020 7:28 am
Forum: Beginner's corner
Topic: Polarising
Replies: 19
Views: 10453

Re: Polarising

I have a classmate who is currently doing research on low-cost adhesives that can be used as petrographic mountants.

If he comes up with anything useful I will let you know, I think he is testing around 40 types of adhesive
by jb89
Wed Mar 04, 2020 6:02 pm
Forum: Beginner's corner
Topic: Polarising
Replies: 19
Views: 10453

Re: Polarising

We use Hillquist adhesive at school and most of us do not bother to frost our thin sections, it will adhere fine either way. If you can lay your slide on a flat and true surface and see any movement when you tap the corners you can either grab a different slide or you can grind them flat but frostin...
by jb89
Fri Feb 21, 2020 1:33 am
Forum: Camera systems and imaging
Topic: Video stitching and layering
Replies: 7
Views: 2323

Re: Video stitching and layering

Worked well for me: See here for olivers video on his try with it: https://www.youtube.com/watch?v=XipXRo7iftg Hi, I posted a video on Youtube of the process myself some time ago now - BUdiM1wfeT8 That is exactly what I'm looking for, I guess I need to slow down when I take my video and make sure t...
by jb89
Thu Feb 20, 2020 10:56 am
Forum: Camera systems and imaging
Topic: Video stitching and layering
Replies: 7
Views: 2323

Re: Video stitching and layering

Microsoft ICE is superb and fast for stitching..... I tried Microsoft ICE and it gave me very weird results but maybe if I take more care when recording my video I can get something usable from it I have photoshop, lightroom and illustrator, and Helicon Focus as well if there's anything I can do wi...
by jb89
Thu Feb 20, 2020 6:22 am
Forum: Camera systems and imaging
Topic: Video stitching and layering
Replies: 7
Views: 2323

Re: Video stitching and layering

What kind of set up do you have? Do you have a motored xy-stage? Thanks, Ted Ted, This would be for transmitted light at relatively low magnification (probably 25x or 50x), I have a rotating analyzer, manual point counting stage. I tried creating a panorama in Helicon Focus but it didn't give me an...
by jb89
Wed Feb 19, 2020 2:25 pm
Forum: Camera systems and imaging
Topic: Video stitching and layering
Replies: 7
Views: 2323

Video stitching and layering

I live near the USGS Core Research Center which houses and loans out samples and thin sections from wells all across the US. The samples loaned from the CRC can be retained for a maximum of 30 days. I want to be able to take a video of me scanning the entirety of a slide and then stitch it together ...
by jb89
Wed Feb 19, 2020 2:11 am
Forum: Specimens, samples and slides
Topic: reflected light silicon chip die
Replies: 39
Views: 9746

Re: reflected light silicon chip die

WhyMe wrote:
Wed Feb 19, 2020 1:55 am
Got mine today. Thank you! It looks great under my scope!
Awesome, glad to hear it!
by jb89
Tue Feb 18, 2020 3:39 am
Forum: Digital processing
Topic: Stacking Software
Replies: 42
Views: 21636

Re: Stacking Software

I also just tried Helicon Focus and I love it. I can just set my camera to take a video while I lower or raise my stage and then import it and a minute or two later have a fantastically stacked image(useful for me but maybe not photographically excellent). It's very little effort for an end result t...
by jb89
Mon Feb 17, 2020 9:39 am
Forum: Microscopes and optics
Topic: Leitz 80x 1.30 Petrographic objective
Replies: 6
Views: 1855

Re: Leitz 80x 1.30 Petrographic objective

viktor, I am not very sure but I think those very short objectives were put into centering rings or clutches and were used on very early 1900's leitz petrographic/metallurgic microscopes. I want to say I read that they were called "MOP" microscopes but I couldn't find any info in manuals to verify t...
by jb89
Mon Feb 17, 2020 2:45 am
Forum: Pictures and Videos
Topic: Pine stem cross section
Replies: 10
Views: 2336

Re: Pine stem cross section

I think it looks phenomenal, you put a lot of work into it and it shows

I unfortunately can't give you any critiques but maybe some of the more experienced guys will have some tips for you
by jb89
Sun Feb 16, 2020 5:27 pm
Forum: Specimens, samples and slides
Topic: reflected light silicon chip die
Replies: 39
Views: 9746

Re: reflected light silicon chip die

Scotch ‘Magic Tape’ or similar might serve to package them without leaving much residue ... but it’s tempting to think that you could probably secrete them under the postage stamp [in memory of WWII agents] I ended up taping them down to a strip of paper and then wrapping them in bubble wrap, hopef...
by jb89
Sun Feb 16, 2020 4:05 am
Forum: Specimens, samples and slides
Topic: reflected light silicon chip die
Replies: 39
Views: 9746

Re: reflected light silicon chip die

Hi jb89, your relected-light 'round robin' group activity would be an excellent forum thread! My basic questions so far are: 1) what magnification objective are you depicting in this posts first image? 2) what is the working distance between objective and the target substraight? 3) May we see a pic...
by jb89
Sun Feb 16, 2020 1:09 am
Forum: Microscopes and optics
Topic: Zeiss Universal project
Replies: 22
Views: 9252

Re: Zeiss Universal project

Bob,

I will have to look into a 40mm lens soon, the 50mm with the +1 lens is definitely temporary

Lowering my ISO did give me a bit of a better image as well

I tried the steps you showed and I was able to get good results as well, thank you!

My name is Josh
by jb89
Sat Feb 15, 2020 8:03 pm
Forum: Microscopes and optics
Topic: Zeiss Universal project
Replies: 22
Views: 9252

Re: Zeiss Universal project

Nice camera adaptation, and it seems to work very well! Perhaps the 50mm objective doesn't make use of the full image area. For full frame sensors they are about right, for APS-C a bit long. With a litlle editing the image looks about as good as it gets - what is it? Bob The 50mm lens (with +1 clos...
by jb89
Sat Feb 15, 2020 5:55 pm
Forum: Microscopes and optics
Topic: Zeiss Universal project
Replies: 22
Views: 9252

Re: Zeiss Universal project

I am using the KPL 8X as photo eyepiece. Its eyepoint is relatively low, 9mm from the top lens. Yet I manage to get a parfocal focused image with a camera lenes ("afocal"). Also without a camera lens, but the aberrations get worse. But I am guessing it differs from setup to setup. I decided to go t...
by jb89
Sat Feb 15, 2020 5:26 pm
Forum: Specimens, samples and slides
Topic: reflected light silicon chip die
Replies: 39
Views: 9746

Re: reflected light silicon chip die

I'm taking some of these to the post office today, if you'd like some just let me know! WhyMe, Tom Jones, jfiresto and MichaelG. I am taking your packets to the post office now and I will edit this when they have been successfully sent out! Edit: they have all been dropped off If anyone else wants a...
by jb89
Thu Feb 13, 2020 1:46 am
Forum: Microscopes and optics
Topic: Zeiss Universal project
Replies: 22
Views: 9252

Re: Zeiss Universal project

I am using the KPL 8X as photo eyepiece. Its eyepoint is relatively low, 9mm from the top lens. Yet I manage to get a parfocal focused image with a camera lenes ("afocal"). Also without a camera lens, but the aberrations get worse. But I am guessing it differs from setup to setup. Thanks, I'll keep...
by jb89
Wed Feb 12, 2020 6:50 pm
Forum: Microscopes and optics
Topic: Zeiss Universal project
Replies: 22
Views: 9252

Re: Zeiss Universal project

I have a canon rebel t3i with the normal zeiss photo tube and 8x kpl eyepiece in the tube. I think I will need a 10x eyepiece to be in focus at the same time as my regular eyepieces? Here is a link to some excellent articles on the matter: http://www.microbehunter.com/microscopy-forum/viewtopic.php...
by jb89
Wed Feb 12, 2020 8:27 am
Forum: Specimens, samples and slides
Topic: reflected light silicon chip die
Replies: 39
Views: 9746

Re: reflected light silicon chip die

I have some chips similar in size that I mounted to slides without a cover glass. I find it difficult to photograph them because of the clear coating. Jb89, do you have any techniques you can share? Could you post some of your pictures? This is one I just took with my phone held to the eyepiece on ...
by jb89
Wed Feb 12, 2020 6:52 am
Forum: Microscopes and optics
Topic: Zeiss Universal project
Replies: 22
Views: 9252

Re: Zeiss Universal project

Running a bit behind on modeling the gear in CAD but the microscope is almost finished. I just need to figure out an adapter for my camera and align everything and I should be good to go for more features than I had ever dreamed of having in a microscope! I have a canon rebel t3i with the normal zei...
by jb89
Wed Feb 12, 2020 5:58 am
Forum: Specimens, samples and slides
Topic: reflected light silicon chip die
Replies: 39
Views: 9746

Re: reflected light silicon chip die

So these things are insanely small and it might not have been obvious from the first picture. 20200211_142812.jpg I think I will include at least two or three with each envelope just in case you misplace or drop one before you can mount it to a slide or something. Does anyone have any good ideas for...
by jb89
Tue Feb 11, 2020 7:31 am
Forum: Specimens, samples and slides
Topic: reflected light silicon chip die
Replies: 39
Views: 9746

Re: reflected light silicon chip die

jfiresto wrote:
Tue Feb 11, 2020 7:23 am
If you would like to distribute a few as a standard target and compare microscopes, I would be happy to put one under a Wild M3 and an M7S, take some pictures and add them to a thread.
I think that's a great idea!
by jb89
Tue Feb 11, 2020 4:47 am
Forum: Specimens, samples and slides
Topic: reflected light silicon chip die
Replies: 39
Views: 9746

reflected light silicon chip die

Hey guys, I picked up 250 of these for $12 shipped, if you have reflected light capabilities and want one just let me know, I have some envelopes and stamps im trying to get rid of anyway if you need a couple for you and some friends just let me know and I'll put a couple in for you Edit: these are ...
by jb89
Fri Feb 07, 2020 2:25 pm
Forum: Microscopy accessories
Topic: Zeiss Universal Dust Cover
Replies: 2
Views: 1655

Re: Zeiss Universal Dust Cover

Thanks 75RR, I'll give that a shot!
by jb89
Fri Feb 07, 2020 2:13 pm
Forum: Microscopes and optics
Topic: Zeiss Universal project
Replies: 22
Views: 9252

Re: Zeiss Universal project

I read in a German language forum(translated) that the suspected cause of this failure is not bracing the stage during shipping which makes sense due ti the one gear being sheared off on mine. I just went to swap my optovar with a mag changing optovar, I'm having issues getting it centered and wante...