Search found 340 matches
- Mon Oct 02, 2023 6:08 am
- Forum: Microscopes and optics
- Topic: Zeiss Objective Disassembly
- Replies: 8
- Views: 2038
Re: Zeiss Objective Disassembly
Well I have tried numerous methods so far, including with the addition of penetrating oil down in the groove, and this thing just absolutely will not budge. I think I'd need an F1 wheel gun to have a hope. Maybe someone disassembled it before me and covered the threads in loctite. I guess if I ever ...
- Sat Sep 30, 2023 5:17 pm
- Forum: Microscopes and optics
- Topic: Zeiss Objective Disassembly
- Replies: 8
- Views: 2038
Re: Zeiss Objective Disassembly
The colored ring unscrews from the front. I used two small band clamps (with rubber) but leather should work too. That blue paint layer is really thin so make sure you have a good grip before breaking it free. I am not sure what the next step for clearing out the sticky grease would be. Ah excellen...
- Fri Sep 29, 2023 6:23 pm
- Forum: Microscopes and optics
- Topic: Zeiss Objective Disassembly
- Replies: 8
- Views: 2038
Zeiss Objective Disassembly
Hello all, I recently picked up this Zeiss objective on eBay. In classic eBay lens fashion, this one arrived looking like someone had dumped a bucket of lube into it. I had to do a lot of cleaning to get it into good shape and then I found that it was not parfocal with my other lenses - the spring r...
- Sat Sep 02, 2023 5:48 am
- Forum: Pictures and Videos
- Topic: Forelimb of the Cosmic Apid
- Replies: 1
- Views: 311
Forelimb of the Cosmic Apid
Okay it's just a bee leg, but I think it's neat! Polarized Darkfield with waveplate shenanigans.
- Mon Aug 28, 2023 6:35 am
- Forum: Illumination Techniques
- Topic: Better circular compass cutter
- Replies: 13
- Views: 9030
Re: Better circular compass cutter
One of my discord members got something like this: https://www.amazon.com/Plastic-Mathematics-Drawing-Drafting-Template/dp/B00VWSS5LU and then scratched the outline of the circles in with a pin and cut them out with scissors. I bet a swiveling craft knife would also do the trick. I got one of those ...
- Wed Aug 16, 2023 8:06 pm
- Forum: Beginner's corner
- Topic: European source for beginner scopes?
- Replies: 12
- Views: 18945
Re: European source for beginner scopes?
Another option is to buy directly from one of the many distributors or factories in China. Yeah I think that's a good option if you're seasoned but a lot of folks that are asking are young and/or inexperienced so they might not be super comfortable with that process. Anyone in the EU wanna start a ...
- Mon Aug 14, 2023 5:37 pm
- Forum: Camera systems and imaging
- Topic: Your stacking experiences with HeliconFocus and Zerene Stacker software
- Replies: 10
- Views: 2124
Re: Your stacking experiences with HeliconFocus and Zerene Stacker software
As I understand it, the general workflow you should follow in Zerene is to generate Dmap and Pmax, use Dmap as your primary image and then retouch blurry spots with the Pmax stack.
More info here: https://zerenesystems.com/cms/stacker/d ... utorial003
More info here: https://zerenesystems.com/cms/stacker/d ... utorial003
- Mon Aug 14, 2023 1:49 am
- Forum: My microscope
- Topic: Scope Central
- Replies: 4
- Views: 1718
Re: Scope Central
BH2 is lookin a little light! Why so much neglect for the best microscope ever made?!
- Mon Aug 14, 2023 1:43 am
- Forum: Pictures and Videos
- Topic: First dark field imaging - inverted diaphot with ELWD condensor
- Replies: 14
- Views: 1680
Re: First dark field imaging - inverted diaphot with ELWD condensor
I wonder if you might be able to make my oblique techniques work? I mean one of the nice things about inverted is that it’s very easy to mess around with the light field….
- Mon Aug 07, 2023 10:30 pm
- Forum: Beginner's corner
- Topic: European source for beginner scopes?
- Replies: 12
- Views: 18945
European source for beginner scopes?
So I don’t live in Europe, but I get a lot of folks from Europe asking me what they should buy. Most people are looking to spend under 300 ($ or € or £) and most people are beginners so I’m hesitant to direct them to the used market. In the US, I always have a good answer. The BoliScope as I’ve come...
- Sun Jul 30, 2023 6:22 pm
- Forum: Microscopes and optics
- Topic: Field Microscope Collection
- Replies: 10
- Views: 2081
Re: Field Microscope Collection
Oh this is really cool! Thank you for sharing!
What are your thoughts on the TWX-1? I see those from time to time on eBay.
What are your thoughts on the TWX-1? I see those from time to time on eBay.
- Sun Jul 30, 2023 7:28 am
- Forum: Pictures and Videos
- Topic: Trichocerca sp.
- Replies: 0
- Views: 257
- Tue Jul 25, 2023 10:18 pm
- Forum: Pictures and Videos
- Topic: Intense Microorganism Chase
- Replies: 3
- Views: 518
- Tue Jul 25, 2023 12:13 am
- Forum: Pictures and Videos
- Topic: Intense Microorganism Chase
- Replies: 3
- Views: 518
Re: Intense Microorganism Chase
Nice! I love Loxodes - they have such a cool shape!
- Mon Jul 24, 2023 8:38 pm
- Forum: Pictures and Videos
- Topic: Actinobolina Caught Live on Stream
- Replies: 2
- Views: 490
Re: Actinobolina Caught Live on Stream
Thanks! Here's a snippet of some more footage I got. Planning to make a full 4K video at some point just need to find the time: https://www.reddit.com/r/microscopy/com ... _on_video/
- Sun Jul 23, 2023 7:24 am
- Forum: Pictures and Videos
- Topic: Actinobolina Caught Live on Stream
- Replies: 2
- Views: 490
Actinobolina Caught Live on Stream
Insane find tonight live streaming some samples from California's Central Valley.
https://www.twitch.tv/videos/1879402539
Got a lot more footage - proper video to follow. Also have the slide saved - don't know if it will last to tomorrow but I might try to find it again on my Youtube Live stream
https://www.twitch.tv/videos/1879402539
Got a lot more footage - proper video to follow. Also have the slide saved - don't know if it will last to tomorrow but I might try to find it again on my Youtube Live stream
- Sat Jul 22, 2023 6:57 am
- Forum: Microscopes and optics
- Topic: Olympus Bh2 UCD universal condenser
- Replies: 12
- Views: 2369
- Sat Jul 22, 2023 2:53 am
- Forum: Pictures and Videos
- Topic: My first live stream - Hydra
- Replies: 2
- Views: 382
Re: My first live stream - Hydra
Livestream fever.
- Thu Jul 20, 2023 3:31 am
- Forum: Pictures and Videos
- Topic: some stereos
- Replies: 33
- Views: 4272
Re: some stereos
But that was too much work for me, so I gave up and worked directly on the stereo images. I do this asynchronously because they are rotated by an angle. You could also work on them in two windows open at the same time, but that didn't work for me. Red/Cyan images I create with Picolay. Okay that so...
- Wed Jul 19, 2023 5:25 pm
- Forum: Pictures and Videos
- Topic: some stereos
- Replies: 33
- Views: 4272
Re: some stereos
I just started using Zerene yesterday.
So for these stacks, are you retouching each of the stereo pair images individually? Or is there a secret to generate a flat, retouched image first and then convert to stereo?
Also, how do you get the red/cyan images?
So for these stacks, are you retouching each of the stereo pair images individually? Or is there a secret to generate a flat, retouched image first and then convert to stereo?
Also, how do you get the red/cyan images?
- Wed Jul 19, 2023 5:10 am
- Forum: Pictures and Videos
- Topic: Skeeter Stereo
- Replies: 0
- Views: 265
Skeeter Stereo
Nikon 4x Plan Apo stack of a skeeter! I used the lens to direct project onto a Sony A7III sensor and took 48 images manually adjusting my helicoid slightly between each. I used Zerene stack for the first time today - I was a little disappointed that, between Zerene and Helicon, there's no straightfo...
- Tue Jul 18, 2023 11:04 pm
- Forum: Microscopy accessories
- Topic: Making glass knives from microscope slides
- Replies: 6
- Views: 2032
Re: Making glass knives from microscope slides
Figure 6-2, Page 78, Plant Microtechnique and Microscopy, Treven E. Ruzin shows how to create glass knives for mictotomes from ordinary microscope slides. I have attempted this with a friend and we kept getting straight breaks rather than a knife edge. Has anyone had scussess from making glass kniv...
- Tue Jul 18, 2023 6:47 am
- Forum: Pictures and Videos
- Topic: Next Catenula Lemnae
- Replies: 3
- Views: 633
Re: Next Catenula Lemnae
Hello. Today I'm going to show you an old video from February this year. Well, now I found the time to post it on the forum. I have quite a lot of material from winter and spring and I will be publishing it successively. So far, all samples have been found in my kennel. Now I present: Catenula Lemn...
- Sun Jul 16, 2023 7:15 am
- Forum: Pictures and Videos
- Topic: some stereos
- Replies: 33
- Views: 4272
- Sun Jul 16, 2023 12:49 am
- Forum: Camera systems and imaging
- Topic: extension rings or microscope lens adapting it to a Canon camera
- Replies: 31
- Views: 8601
Re: extension rings or microscope lens adapting it to a Canon camera
I’ve done a little work with a Nikon 4x Plan Apo and a 10x CFN Plan adapted to my full frame camera. They are capable of very sharp imagery but of course the focal depth is razor thin. This can be adjusted by putting your own aperture on the back of the lens with the usual light and sharpness penalt...
- Sun Jul 16, 2023 12:29 am
- Forum: Microscopes and optics
- Topic: Nikon Plan Apo 20x available again
- Replies: 8
- Views: 1249
Re: Nikon Plan Apo 20x available again
Thanks for the heads-up, Pete. I don’t think I have anything capable of using this right now, but maybe I’ll pick one up just for future’s sake. Never a bad idea to find out where these Bay Area surplus folks actually operate from, either - can often get better deals in-person for cash ;) Do you kno...
- Fri Jul 14, 2023 3:02 pm
- Forum: Pictures and Videos
- Topic: 1.67x Testing - Spitta Diatom Slide
- Replies: 12
- Views: 1479
Re: 1.67x Testing - Spitta Diatom Slide
The diatom second from the left shows the effect most. It might be some sort of psychophysical effect arising from the adjacent, saturated colors. In any event, it's not a big deal. Clearly not a flaw in your overall system because your video imagery is great. Cheers, David It’s funny you mention t...
- Fri Jul 14, 2023 2:36 pm
- Forum: Microscopes and optics
- Topic: Dino-lite handheld scopes?
- Replies: 4
- Views: 804
Re: Dino-lite handheld scopes?
Good form factor but if that isn't essential an industrial zoom lens like an optem or navitar zoom 6000 can often be had cheap and paired with a c mount camera and they have reasonably good optics. That’s a good call - I’ve been meaning to set up something like this to capture full, high-res images...
- Fri Jul 14, 2023 3:19 am
- Forum: Microscopes and optics
- Topic: Dino-lite handheld scopes?
- Replies: 4
- Views: 804
Dino-lite handheld scopes?
So I watch eBay a lot and one thing I've always noticed is that these Dino-lite USB microscopes go for crazy amounts of money! Meanwhile, similar looking Alibaba-esque scopes can be had for well under 50 USD. Are Dino-lites just incredible optical devices or is something weird going on with the mark...
- Thu Jul 13, 2023 1:25 pm
- Forum: Pictures and Videos
- Topic: 1.67x Testing - Spitta Diatom Slide
- Replies: 12
- Views: 1479
Re: 1.67x Testing - Spitta Diatom Slide
Great find with the NFK 1.67 - not common, expensive, and, based on your successes, definitely valuable. I'm with Phill, however: something doesn't look quite right with your diatom images. I also thought it was motion blur at first, but your HiRes images don't support that. Maybe something about t...