Search found 28 matches

by cmug
Thu Feb 22, 2024 8:55 am
Forum: Home-made microscope adaptations
Topic: Not happy with Cree CXA1304, what is an alternative ?
Replies: 13
Views: 2771

Re: Not happy with Cree CXA1304, what is an alternative ?

Placing a diffuser I did not see as the ideal solution. In the end, I decided to dismantle the COB LED and place single LED. Slightly less maximum light output. But now the illumination is even, good. Extreme light is only needed for special techniques. For normal illumination, the power is set to 1...
by cmug
Wed Dec 27, 2023 9:50 pm
Forum: My microscope
Topic: DIY Slide Ringing
Replies: 3
Views: 1561

Re: DIY Slide Ringing

Seems to my: (to) difficult to use this design
(read here fore better options
Image
by cmug
Tue Dec 26, 2023 8:51 am
Forum: Microscopes and optics
Topic: Focus mechanism of Leitz Wetzlar Dialux
Replies: 9
Views: 2760

Re: Focus mechanism of Leitz Wetzlar Dialux

There is also an photo explanation at the german microscopic forum about repair the focus mechanism
Beware it’s not an easy job !
https://www.mikroskopie-forum.de/index. ... ic=32511.0
by cmug
Tue Nov 21, 2023 2:22 pm
Forum: Beginner's corner
Topic: Leitz sm lux bulb replacement?
Replies: 41
Views: 18070

Re: Leitz sm lux bulb replacement?

Many internet URLs were unworkable in this 'thread'. I have two 2nd hand SM-lux here that I am converting to LED. But first a look at the original bulbs. Model gray hammered paint: Osram 6251 6V 5Watt ∅ 9,1 mm Model plain gray paint: Philips 6814 6V 10 Watt ∅ 15,1 mm https://i.postimg.cc/gkdxV9zg/te...
by cmug
Mon Aug 14, 2023 9:22 am
Forum: Camera systems and imaging
Topic: Good software for Apple/Mac & microscope cam ?
Replies: 10
Views: 2079

Re: Good software for Apple/Mac & microscope cam ?

Here I found an overview of all kinds of brands and software https://www.lmscope.com/en/remote_control_pc_mac_en.html And this is the list of cameras that have tethering shooting option in Adobe Lightroom (at the end of the list the life view models) https://helpx.adobe.com/lightroom-classic/kb/teth...
by cmug
Sun Aug 13, 2023 10:43 pm
Forum: Home-made microscope adaptations
Topic: Not happy with Cree CXA1304, what is an alternative ?
Replies: 13
Views: 2771

Re: Not happy with Cree CXA1304, what is an alternative ?

Thanks 2x. Great websites to puzzle for the right LED on a board.
Found myself this website (+A lot of data and graphs there)
https://www.led-tech.de/de/CREE-XE-G-au ... 000K-CRI90
by cmug
Sun Aug 13, 2023 2:25 pm
Forum: Camera systems and imaging
Topic: Good software for Apple/Mac & microscope cam ?
Replies: 10
Views: 2079

Re: Good software for Apple/Mac & microscope cam ?

I think you are indeed articulating well what I was thinking. Apple / Mac software does not have the attention of microscope camera vendors. I tried Motic, but this sotware is only accessible if you buy piece of hardware from Motic. Well but I don't want to buy until I know that the software works w...
by cmug
Sun Aug 13, 2023 2:01 pm
Forum: Home-made microscope adaptations
Topic: Not happy with Cree CXA1304, what is an alternative ?
Replies: 13
Views: 2771

Re: Not happy with Cree CXA1304, what is an alternative ?

Just fixed the Wild M11 Köhler illumination (grease on the aperture removed). Good time to take a look at this build-up. The condenser consists of 2 lenses as far as I can see. The lens close to the lamp is matted. OK just leaves the diffusion stuff. Am more interested in a good LED that is not a co...
by cmug
Fri Aug 11, 2023 9:15 am
Forum: Home-made microscope adaptations
Topic: Not happy with Cree CXA1304, what is an alternative ?
Replies: 13
Views: 2771

Re: Not happy with Cree CXA1304, what is an alternative ?

Seen the Nikon Diffuse Lens Filter on the internet but €20 + €40 additional cost me a bit too high to do an experiment with.
Image
by cmug
Fri Aug 11, 2023 8:47 am
Forum: Camera systems and imaging
Topic: Non parfocality
Replies: 1
Views: 800

Re: Non parfocality

Did you check that it really is 'out of focus' ? With digital reflexes (with mirror), you often suffer from vibrations that make the photo out of focus. Especially at higher magnifications.
by cmug
Thu Aug 10, 2023 2:44 pm
Forum: Home-made microscope adaptations
Topic: Not happy with Cree CXA1304, what is an alternative ?
Replies: 13
Views: 2771

Re: Not happy with Cree CXA1304, what is an alternative ?

Thanks for your responses. The Cree xp-l HI is to be considered indeed (unfortunately not the same 'foot') Am just cleaning and cleaning the aperture of a Köhler illumination of a Wild microscope (M11). There they use a condenser lens that is matted. (Just like I saw in a Zeiss microscope) Leica doe...
by cmug
Thu Aug 10, 2023 7:02 am
Forum: Home-made microscope adaptations
Topic: Not happy with Cree CXA1304, what is an alternative ?
Replies: 13
Views: 2771

Not happy with Cree CXA1304, what is an alternative ?

I converted my vintage Leitz Dialux from 100-watt halogen to LED. Basically, it worked out well. Good brightness control and plenty of nice 'daylight'. Have set this LED economical to a maximum of 4 watts. As for the uniformity of the light beam, I am less satisfied. It turns out that the LED is not...
by cmug
Thu Aug 10, 2023 6:44 am
Forum: Camera systems and imaging
Topic: Good software for Apple/Mac & microscope cam ?
Replies: 10
Views: 2079

Good software for Apple/Mac & microscope cam ?

I am looking for how to get good life image on my Apple computer and take good pictures. You can buy affordable industry cameras with brands like Yizjan and Yahear etc. I bought a Yahear as a test. But can't find a decent Mac OS application. Either I only have a viewer and can't do any settings. Or ...
by cmug
Wed May 03, 2023 7:56 am
Forum: Beginner's corner
Topic: Du Jardin colouring (Where buy chemicals)
Replies: 2
Views: 1268

Re: Du Jardin colouring (Where buy chemicals)

Thanks for the tip ! This explains Acridine red is nowhere to be found. And that I have to go other route. In a search for rhodamine B I found a wonderful good German website . A very nice thorough comparative study of different colorings. And provides alternatives to no longer available Acridine re...
by cmug
Tue May 02, 2023 11:40 am
Forum: Beginner's corner
Topic: Du Jardin colouring (Where buy chemicals)
Replies: 2
Views: 1268

Du Jardin colouring (Where buy chemicals)

I would like to use a Du Jardin colouring. The recipe is described in the book "Microscopie als hobby" [Dutch] . Problem is that the dyes & chemicals are not all readily available. Making Astra blue solution is quite possible for me. I can order that chemicals. But the second part [acridine-chrysoid...
by cmug
Mon Apr 20, 2020 2:29 pm
Forum: Microscopes and optics
Topic: Leica Stereozoom 6: dirty lens
Replies: 11
Views: 4466

Re: Leica Stereozoom 6: dirty lens

I bought Cerium-oxide. Circa 0,5-1,0 micron. And did the experiment. Make a paste from the Cerium-oxide and distilled water. Used an Dremel polish + PEC pad at top. And polish for ~ 20 minutes. After the polish The glas was much better, still not as new. Unfortunately, it was only possible to proces...
by cmug
Mon Mar 30, 2020 6:58 pm
Forum: Microscopes and optics
Topic: Leica Stereozoom 6: dirty lens
Replies: 11
Views: 4466

Re: Leica Stereozoom 6: dirty lens

The Leica Stereozoom 6 was the binocular was the one with the damaged lenses. I also found same binocular with name Bausch & Lomb (exactly the same) ; these lenses where nearly perfect clean. I compare these 2. In sharpness there is not a big difference. The Leica has less contrast, slightly more af...
by cmug
Mon Mar 30, 2020 2:32 pm
Forum: Home-made microscope adaptations
Topic: LED bulb for Wild M20
Replies: 5
Views: 4565

Re: LED bulb for Wild M20

I now realise that I am also vintage. An LM317 is a longstanding part in electronics. Well, I also likes to work with electron tubes, then every semiconductor is soon 'modern'. Your tip on the ON Semiconductor website is very valuable. There are indeed nice chips for LED applications, better then LM...
by cmug
Mon Mar 30, 2020 2:20 pm
Forum: Microscopes and optics
Topic: Leica Stereozoom 6: dirty lens
Replies: 11
Views: 4466

Leica Stereozoom 6: dirty lens

I was cleaning up at work (Middle school) today. And at my surprise I found three nice old binocular microscopes at the bottom of a cabinet. Well with some backward maintenance. I start the repair of the first one now. It is a Leica Stereozoom 6. Mechanically this is fine if I put new grease in it (...
by cmug
Fri Mar 27, 2020 9:35 am
Forum: Home-made microscope adaptations
Topic: LED bulb for Wild M20
Replies: 5
Views: 4565

Re: LED bulb for Wild M20

The 28 mA is the measured value (not calculated). There was a diode bridge between the 12V DC and the LED, which also has voltage drop. That is the reason I think that the calculation based on DC is different then what I did. The advantage of the diode bridge is that you can use both AC or DC and th...
by cmug
Thu Mar 26, 2020 10:27 am
Forum: Home-made microscope adaptations
Topic: LED bulb for Wild M20
Replies: 5
Views: 4565

LED bulb for Wild M20

Original 6V 15 W bulb for this Microsscope is a bit rare. So make an LED light as replacement seems better. I made the holder on my lathe. Thought the plastic was Polypropylene. In front a disc aluminium as cooling for the LED. As an LED I used the much too expensive Philips car LED lamp 6000K (nr 1...
by cmug
Wed Mar 25, 2020 8:24 pm
Forum: Home-made microscope adaptations
Topic: LED for Nikon Labophot Dual View (Teaching) head
Replies: 2
Views: 2845

Re: LED for Nikon Labophot Dual View (Teaching) head

You are absolutely right. Using the aluminum can here as a heat sink is much better. The reason I didn't do it is that there was no heat sink in the IKEA LED either. So it seemed unnecessary to me I bought the LED for around € 3.- So that's low. You can find the LED I used easy if you Google for: JA...
by cmug
Wed Mar 25, 2020 7:32 am
Forum: Home-made microscope adaptations
Topic: LED for Nikon Labophot Dual View (Teaching) head
Replies: 2
Views: 2845

LED for Nikon Labophot Dual View (Teaching) head

Here my upgrade for a Nikon Labophot Dual View (Teaching) head The original lamp for the arrow pointer was missing so I made a LED lamp myself. Anyone who can work with a lathe can make it Here a few building tips Start with an aluminum cylinder from 18 mm length and a diameter from 17 mm. Drill a 1...
by cmug
Fri Nov 16, 2018 4:42 pm
Forum: Beginner's corner
Topic: Size Elodea cel
Replies: 2
Views: 2854

Re: Size Elodea cel

Top , Thanks. Nice link to website. I think I measure right .
by cmug
Thu Nov 15, 2018 8:57 am
Forum: Beginner's corner
Topic: Size Elodea cel
Replies: 2
Views: 2854

Size Elodea cel

In school we wan’t to known what the average size is from an Elodea cel.
Can anyone conform I measure it good?
Length 100 micrometer (75µm a 125µm)
Width 30 micrometer ( 15µm a 45µm)
Thanks for your replay
by cmug
Mon Oct 29, 2018 10:26 pm
Forum: Specimens, samples and slides
Topic: Opening and closure Stoma
Replies: 2
Views: 3317

Re: Opening and closure Stoma

Thanks ! Very interesting literature! I am going to try to find the plants that they use. The CO2 method also seems useful to me. That's I'am going to try also Today I bought the advised Bergenia and made some slides. sadly ; this is not an good plant for seen stoma. I get very difficult an epidermi...
by cmug
Mon Oct 29, 2018 9:38 pm
Forum: Specimens, samples and slides
Topic: Opening and closure Stoma
Replies: 2
Views: 3317

Opening and closure Stoma

I work as a science/biology technician at a school in The Netherlands. I want to show my pupils the opening and closure of a Stoma. Theoretical is good described and shown in great pictures for example at wikipedia . But seen this in practice is much more difficult. I can make good microscope slide ...