Ok.
I think it has to do with a glass plate shift of focus.
I have to compare one with a beam splitter and one with a sliding mirror.
Search found 63 matches
- Mon Sep 05, 2022 7:04 am
- Forum: Camera systems and imaging
- Topic: Zeiss Jena focusing telescopes
- Replies: 2
- Views: 888
- Sun Sep 04, 2022 3:54 pm
- Forum: Camera systems and imaging
- Topic: Zeiss Jena focusing telescopes
- Replies: 2
- Views: 888
Zeiss Jena focusing telescopes
Hi. Photo projection objectives of Zeiss Jena are made for projection distance of 125mm. Below are listed different focusing attachments. Circled in red. Screenshot_2022-09-04-00-14-50-612_com.paperpile~2.jpg My question is how they can use the same camera connection tube from above if length of foc...
- Fri Jan 29, 2021 10:22 am
- Forum: Camera systems and imaging
- Topic: t Linux software/driver for HY-5200 camera.
- Replies: 1
- Views: 1432
t Linux software/driver for HY-5200 camera.
HI
Does anyone has Linux software for HY-5200 camera, for one for few bucks on a flea market but I am having troubles using it with Linux
Here is a photo
https://photos.app.goo.gl/krKhLd6N4sCrNJe7A
Does anyone has Linux software for HY-5200 camera, for one for few bucks on a flea market but I am having troubles using it with Linux
Here is a photo
https://photos.app.goo.gl/krKhLd6N4sCrNJe7A
- Fri Dec 25, 2020 9:21 am
- Forum: Pictures and Videos
- Topic: The best Camera for Photomicrography
- Replies: 25
- Views: 12361
Re: The best Camera for Photomicrography
Nice article.
I would only clarify the situation when people say that 3M is enough. It is when you attach a DLSR to the older 35mm photo camera adapter, which uses a projective eyepiece. Without additional optics 3M is about as high as you will need.
Best.
Petro.
I would only clarify the situation when people say that 3M is enough. It is when you attach a DLSR to the older 35mm photo camera adapter, which uses a projective eyepiece. Without additional optics 3M is about as high as you will need.
Best.
Petro.
- Fri Aug 07, 2020 10:20 am
- Forum: Camera systems and imaging
- Topic: Zeiss Jena camera focusing problem.
- Replies: 2
- Views: 1986
Re: Zeiss Jena camera focusing problem.
I think I figured out what is my problem.
http://www.microscopist.co.uk/wp-conten ... -focus.pdf
http://www.microscopist.co.uk/wp-conten ... -focus.pdf
- Thu Aug 06, 2020 8:59 pm
- Forum: Camera systems and imaging
- Topic: Zeiss Jena camera focusing problem.
- Replies: 2
- Views: 1986
Zeiss Jena camera focusing problem.
Hi. I am using this setup. https://photos.app.goo.gl/GsykgXYFPWQhkmMP6 With MF-projective 4:1 (projection distance 125 mm) and Cannon 40D. My problem that to get sharp image I have to extend sensor eyepiece distance all the way to ~160 mm. With low magnification 6x, 3x even then I cannot get clear p...
- Sat Apr 18, 2020 4:17 pm
- Forum: Illumination Techniques
- Topic: HBO 202 working current?
- Replies: 2
- Views: 1824
Re: HBO 202 working current?
Thanks.
That was stupid of me, I have found the voltage on the Oram site, but somehow it did not come into my mind to calculate current from the power rating.
I have dedicated PSU for it, but it has 6 steps current selector between 3.3 and 5A.
Best.
Petro.
That was stupid of me, I have found the voltage on the Oram site, but somehow it did not come into my mind to calculate current from the power rating.
I have dedicated PSU for it, but it has 6 steps current selector between 3.3 and 5A.
Best.
Petro.
- Sat Apr 18, 2020 2:45 pm
- Forum: Illumination Techniques
- Topic: HBO 202 working current?
- Replies: 2
- Views: 1824
HBO 202 working current?
Hi.
Can someone tell me a working current for HBO202 arc lamp? May be share the datasheet which comes with it.
Thanks.
Petro.
Can someone tell me a working current for HBO202 arc lamp? May be share the datasheet which comes with it.
Thanks.
Petro.
- Sun Mar 08, 2020 6:45 pm
- Forum: Microscopes and optics
- Topic: Fluoval/Amplival trinocular head. Lost magnification.
- Replies: 0
- Views: 6307
Fluoval/Amplival trinocular head. Lost magnification.
Hi everybody. In Fluoval, there is a trino head. Reading magnification 1.6 for oculars and 3.2 for photo output. I have measured magnification ant it is more like 1 and 2. I wonder if this 0.6 have been lost somewhere in the relay optics of the excitation cube. How does it work in Amplival if anyone...
- Sun Mar 08, 2020 6:32 pm
- Forum: Camera systems and imaging
- Topic: M42 helicoids?
- Replies: 3
- Views: 6708
Re: M42 helicoids?
Thanks.
- Tue Feb 04, 2020 11:13 pm
- Forum: Camera systems and imaging
- Topic: M42 helicoids?
- Replies: 3
- Views: 6708
M42 helicoids?
Hi everybody. Does anybody have experience with M42 helicoids for mounting a camera on a microscope. Something similar to this: https://www.ebay.com/itm/M52-M42-25-55mm-Adjustable-Focusing-Helicoid-Adapter-Macro-Extension-Tube-cap-/142712305849?ef_id=CjwKCAiAyeTxBRBvEiwAuM8dnTFuyOp8-Ty5u3wqhFO8ku2mR...
- Tue Feb 04, 2020 10:53 pm
- Forum: Microscopes and optics
- Topic: Interesting paper: Systematic overview of microscope objective designs
- Replies: 3
- Views: 2774
- Mon Jan 06, 2020 10:31 am
- Forum: Microscopes and optics
- Topic: Differences between various Leica DM*** models?
- Replies: 12
- Views: 6090
- Mon Jan 06, 2020 10:22 am
- Forum: Microscopes and optics
- Topic: Zeiss ocular projective
- Replies: 7
- Views: 5073
Re: Zeiss ocular projective
Here some mote info on the subject:
https://drive.google.com/open?id=0B2sfo ... lFTlQ5Q2RF
https://drive.google.com/open?id=0B2sfo ... lFTlQ5Q2RF
- Sat Jan 04, 2020 9:30 pm
- Forum: Microscopes and optics
- Topic: Zeiss ocular projective
- Replies: 7
- Views: 5073
Re: Zeiss ocular projective
Mine looks like from Zeiss projector.
https://www.google.com/url?sa=t&source= ... oqa3CaYobn
The shiny part is longer.
https://www.google.com/url?sa=t&source= ... oqa3CaYobn
The shiny part is longer.
- Fri Jan 03, 2020 3:44 pm
- Forum: Microscopes and optics
- Topic: Zeiss ocular projective
- Replies: 7
- Views: 5073
Zeiss ocular projective
Hi.
I have came across this ocular. Any idea then to use it?
It is over 10 cm long, not sure it will fit in my trinocular head.
Thanks.
I have came across this ocular. Any idea then to use it?
It is over 10 cm long, not sure it will fit in my trinocular head.
Thanks.
- Thu Jan 02, 2020 7:22 am
- Forum: Microscopes and optics
- Topic: Leica Sli LED Illuminator repairs
- Replies: 10
- Views: 4137
Re: Leica Sli LED Illuminator repairs
Try an independent serviceman.
They may do it. In Czech Republic I know at least 5 of them.
Or give it to some one who fixes TVs
They may do it. In Czech Republic I know at least 5 of them.
Or give it to some one who fixes TVs
- Thu Jan 02, 2020 7:16 am
- Forum: Microscopes and optics
- Topic: Differences between various Leica DM*** models?
- Replies: 12
- Views: 6090
Re: Differences between various Leica DM*** models?
I shall have somewere a manual for DMRE. If I find then I will share...
- Sun Dec 08, 2019 7:30 pm
- Forum: Pictures and Videos
- Topic: Fluorescent differences between photosynthetic prokaryotes and eukaryotes
- Replies: 21
- Views: 7524
Re: Fluorescent differences between photosynthetic prokaryotes and eukaryotes
Hi Wes. Firstly let me tell that you have made nice pictures. Now back to your question. Without knowing systematics of algae on the picture I can only make an educated guess. Most of eukaryotes will use Chlorophylls (a, b and some others) Here some examples of spectra from light harvesting protein:...
- Sun Dec 08, 2019 6:05 pm
- Forum: Resources (online, books etc.)
- Topic: DIY Centrifuge
- Replies: 10
- Views: 8460
- Sun Dec 08, 2019 4:41 pm
- Forum: Microscopes and optics
- Topic: Inverted microscopes cant do this....
- Replies: 10
- Views: 4481
Re: Inverted microscopes cant do this....
Thickness off the bottom varies between different plates, and you can find ones with 150 um thick bottom, suitable for high numerical aperture objectives . Thanks in advance for specific information: the ones with 150um thick bottom, with which high numerical aperture objective can they be used ? S...
- Sat Dec 07, 2019 9:33 pm
- Forum: Microscopes and optics
- Topic: Inverted microscopes cant do this....
- Replies: 10
- Views: 4481
Re: Inverted microscopes cant do this....
Hi guys. Here is the main reason why inverted microscope is used in cell culture and biology. Cells are grown in petri dishes: https://www.deltaed.co.nz/wp-content/uploads/2008/06/44PDG.jpg Or other similar thing, like ibidi slides: https://ibidi.com/726-large_default/-slide-18-well-glass-bottom.jpg...
- Thu Nov 28, 2019 12:13 pm
- Forum: Microscopes and optics
- Topic: How to take apart Amplival like focus drive?
- Replies: 3
- Views: 2032
Re: How to take apart Amplival like focus drive?
Hi Bob.
Thanks.
I have been considering it. But my knowledge of German have stopped me from it.
I guess I will try, but I will need someone to help me to register. I was under impression that there was a small English branch on the German forum but was not able to find it.
Best.
Petro.
Thanks.
I have been considering it. But my knowledge of German have stopped me from it.
I guess I will try, but I will need someone to help me to register. I was under impression that there was a small English branch on the German forum but was not able to find it.
Best.
Petro.
- Tue Nov 26, 2019 8:58 pm
- Forum: Microscopes and optics
- Topic: How to take apart Amplival like focus drive?
- Replies: 3
- Views: 2032
How to take apart Amplival like focus drive?
Anyone knows how to take this apart? https://lh3.googleusercontent.com/TdWWgVhVdNUM-nYhwG_IkszAF_1_2_WPwYP178m0yVfiVeaiqNezFD1CCU7DxdEav-qCFfcz9QLEldfDcM-vH907G8eIBNdqnrH9lEMUwQc9ipmhUVlQn1Zn9ZXcgi3qQ92lMPcyREQ=w2400 I tried to rotate the thing in the middle with a spanner wrench but it does not no....
- Tue Nov 26, 2019 5:51 pm
- Forum: Microscopes and optics
- Topic: Lamp house grease
- Replies: 7
- Views: 3074
Re: Lamp house grease
At the end I wrote to a microscope service and repair company located in Poland They recommended this grease. GRIZZLYGREASE No. 3 https://www.lubcon.com/en/products/greases/grizzlygrease-no-3/ I was not able to get it but I think G-1/3 will do the job. It has 175 C working temperature maximum and no...
- Thu Nov 21, 2019 6:40 am
- Forum: Microscopes and optics
- Topic: Lamp house grease
- Replies: 7
- Views: 3074
Re: Lamp house grease
It is hard to say now as I cannot start them and I do not have previous experience with them.
I have ordered some antistuck with working temperature up to 1000C. If it will be to dense I will use G-1/3 OLELUBE vaseline. It has working temperature up to 200C.
And then I will see.
I have ordered some antistuck with working temperature up to 1000C. If it will be to dense I will use G-1/3 OLELUBE vaseline. It has working temperature up to 200C.
And then I will see.
- Wed Nov 20, 2019 5:05 pm
- Forum: Microscopes and optics
- Topic: Lamp house grease
- Replies: 7
- Views: 3074
Re: Lamp house grease
I am sure...
There are remainings of old grease on it, which solidified and lamp adjustment knobs ceased to move.
Here a photo of one of them from the internet.
I do not have them around to make a photo.
There are remainings of old grease on it, which solidified and lamp adjustment knobs ceased to move.
Here a photo of one of them from the internet.
I do not have them around to make a photo.
- Wed Nov 20, 2019 2:02 pm
- Forum: Microscopes and optics
- Topic: Lamp house grease
- Replies: 7
- Views: 3074
Lamp house grease
Hi everybody.
I am regreasing two Zeiss lamp houses.
Any recommendation for a grease?
Thanks.
Petro
I am regreasing two Zeiss lamp houses.
Any recommendation for a grease?
Thanks.
Petro
- Wed Nov 13, 2019 3:55 pm
- Forum: Camera systems and imaging
- Topic: Any experience with this camera?
- Replies: 2
- Views: 3413
Re: Any experience with this camera?
Thanks
I think I will get one for myself.
Best.
Petro.
I think I will get one for myself.
Best.
Petro.
- Sat Nov 09, 2019 10:34 pm
- Forum: Camera systems and imaging
- Topic: Any experience with this camera?
- Replies: 2
- Views: 3413
Any experience with this camera?
Hi.
Does anybody has experience with this camera?
https://www.ebay.com/itm/14MP-TV-HDMI-U ... SwOIxcahJE
Does anybody has experience with this camera?
https://www.ebay.com/itm/14MP-TV-HDMI-U ... SwOIxcahJE