Search found 15 matches

by Nicksmith
Mon Dec 11, 2023 12:17 pm
Forum: For forum members who want to buy and sell equipment
Topic: Wanted PHV Phase Contrast Sliders for Jenamed2
Replies: 0
Views: 1656

Wanted PHV Phase Contrast Sliders for Jenamed2

Hi there I'm looking for Phase Contrast sliders for a Jenamed 2 if you have any
Thank you very much for your time
by Nicksmith
Fri Feb 01, 2019 11:20 am
Forum: Microscopes and optics
Topic: Nikon SMZ-U alignment of zoom field of view centre
Replies: 5
Views: 4224

Re: Nikon SMZ-U alignment of zoom field of view centre

Hi Guys just to say this is resolved the and scope is now performing just great - it was the binocular head unit after all - alignment so I was send another head unit and it's bang-on!
by Nicksmith
Sun Jan 20, 2019 1:14 pm
Forum: Microscopes and optics
Topic: Opinions on Jenalab microscope please
Replies: 5
Views: 3150

Re: Opinions on Jenalab microscope please

Thanks Bob, I'll have a read, quality looks to be top tier from what I can gather.
by Nicksmith
Sun Jan 20, 2019 9:38 am
Forum: Microscopes and optics
Topic: Opinions on Jenalab microscope please
Replies: 5
Views: 3150

Re: Opinions on Jenalab microscope please

Hi Nick, I don't have a Jenalab but I have used one shortly and had a very good impression from it. It has 25mm wide field optics which can be a big plus if you like and need it. A member of our group bought one new when they became cheaper due to production changes and he wouldn't have spend this ...
by Nicksmith
Sat Jan 19, 2019 7:44 pm
Forum: Microscopes and optics
Topic: Opinions on Jenalab microscope please
Replies: 5
Views: 3150

Opinions on Jenalab microscope please

Hi Guys I'm considering this as a new toy could I please have some opinions on quality and application for diatoms? Are the older ones better and if so which and why? Many thanks! https://www.edanco.com/microscopes/9-planachromatic-jenalab-microscope-carl-zeiss-jena.html?search_query=jenalab&results=1
by Nicksmith
Fri Jan 11, 2019 8:32 pm
Forum: Illumination Techniques
Topic: where to place polarizing filter?
Replies: 55
Views: 25008

Re: where to place polarizing filter?

Hobbyst46 wrote:I believe you folks are aware that pointing a laser or even a laser pointer through the microscope or its accessories should be done with great care, to avoid accidental reflections and refractions hitting the eyes.
I certainly value my eyesight more than my microscope :)
by Nicksmith
Fri Jan 11, 2019 3:01 pm
Forum: Illumination Techniques
Topic: where to place polarizing filter?
Replies: 55
Views: 25008

Re: where to place polarizing filter?

I have something called a Glatter Laser Collimator with a target diffraction grating so I may try that. I think in this case it's just a matter of adding a shim and checking a full frame image with stretched histogram to see if the field is being made uneven by this lens.
by Nicksmith
Fri Jan 11, 2019 9:27 am
Forum: Illumination Techniques
Topic: where to place polarizing filter?
Replies: 55
Views: 25008

Re: where to place polarizing filter?

On Android used image shrink app. Here goes. Wedge B controls where swing out lens C lands. Screw A seems to act as a "stop" to park the lens in position D. Lens holder C is tilted. (F is the underside of the field iris). As you can see in position E the screw is already screwed in as far in as poss...
by Nicksmith
Thu Jan 10, 2019 10:10 pm
Forum: Illumination Techniques
Topic: where to place polarizing filter?
Replies: 55
Views: 25008

Re: where to place polarizing filter?

I had also seen those images and just had a closer look at them. On the back of the lens is a brighter one and a fainter one and the look like a filament as you say. They are perfectly aligned vertically, like I aligned them on the back of a chair with the lamphouse away from the microscope and the...
by Nicksmith
Thu Jan 10, 2019 12:08 am
Forum: Microscopes and optics
Topic: Orthoplan - Alternative Phaco and other Objectives with 0.90 NA Condenser
Replies: 2
Views: 2279

Re: Orthoplan - Alternative Phaco and other Objectives with 0.90 NA Condenser

1) I have a 402a condenser and use it with Leitz Phaco 160mm objectives. Could be the annuli in yours are different, but I suspect the 160mm tube length phase objectives will work. 2) A plain (not phase) fluorite or apo objective might be what you look for in a next lens. Not sure phase contrast im...
by Nicksmith
Wed Jan 09, 2019 6:20 pm
Forum: Illumination Techniques
Topic: where to place polarizing filter?
Replies: 55
Views: 25008

Re: where to place polarizing filter?

Believe it or not, this is the exact same process I struggled with on my Orthoplan. I have the same lamp house and frosted lens. I tried tracing paper to no avail too because of the frosted lens. First I projected the image on the wall using a slide, but then I realised that when I introduced the sw...
by Nicksmith
Wed Jan 09, 2019 5:59 pm
Forum: Microscopes and optics
Topic: Orthoplan - Alternative Phaco and other Objectives with 0.90 NA Condenser
Replies: 2
Views: 2279

Orthoplan - Alternative Phaco and other Objectives with 0.90 NA Condenser

Hi Guys few questions as I get to grip with my Leitz Orthoplan... I have an 0.90 NA 402a Achromatic condenser, with Phaco positions "DF",1,2,3 are all full. Position "H" and one other with centering adjusters remain empty. It has a swing out top with no threads on it so I don't think tops are interc...
by Nicksmith
Wed Dec 19, 2018 4:15 pm
Forum: Microscopes and optics
Topic: Nikon SMZ-U alignment of zoom field of view centre
Replies: 5
Views: 4224

Re: Nikon SMZ-U alignment of zoom field of view centre

Thanks Guys I'm going to check this out, I only checked the binocular head by widening the eyepiece holders and checking for image shift - there was none I could see. How do I correct for misalignment of the head if it's seated correctly? I hadn't thought of that...

best Nick
by Nicksmith
Sun Dec 16, 2018 8:54 am
Forum: Microscopes and optics
Topic: Nikon SMZ-U alignment of zoom field of view centre
Replies: 5
Views: 4224

Nikon SMZ-U alignment of zoom field of view centre

Hi there, need some advice... I have a Nikon SMZ-U which seems to function OK however the "axis of zoom" is offset about a 5th off from the centre of the eyepiece field of view, closer to 12 o'clock position, instead of being dead centre. To put it another way, if I zoom in on a speck dead centre in...
by Nicksmith
Sat Dec 15, 2018 4:54 pm
Forum: Introduce yourself
Topic: Hi from the Sunny UK
Replies: 0
Views: 3054

Hi from the Sunny UK

Hi Guys, I recently acquired a used Nikon SMZ-U on eBay and want to get proficient in imaging with it. Got a few technical questions as it may (or may not) have issues, so I thought I'd better join up and start asking...!
Thanks, Nick