MicrobeHunter.com Microscopy Forum

PeteM wrote: ↑

Sun Jul 16, 2023 12:55 am

In addition, Eclipse binocular heads are sometimes available for around $100 with the eyetubes a bit damaged - a cheap source of a tube lens.

Hi PeteM

Does an Eclipse Bino Head Dovetail fit a first series Opitiphot?

Thanks if you know.

John

Sansub2 wrote: ↑

Wed Mar 01, 2023 12:07 am

dolmadis wrote: ↑

Mon Feb 27, 2023 7:13 am

Thanks for this very interesting thread.

I would welcome a thingiverse link please.

John

Please see whether you can access this link

https://www.thingiverse.com/thing:5881647

Yes, i was able to DL.

John

Thanks for this very interesting thread.

I would welcome a thingiverse link please.

John

Just digesting your thoughts. The aperture in the stage is just over 11mm. There is a circular indentation 3mm deep, 36mm dia, on the under surface of the stage centred on the aperture in the stage. Shame not 38 mm but gives a little bit more space if the lens pops over the frame of the diaphragm. I...

All very thoughtful suggestions, thank you, because I am not a natural in the clutches of diy !!

Best, John

Hi, Many thanks for your consideration of how to improve the Meopta Traveller microscope with a condenser. There is a clear space between the stage and the mirror of 20mm. That should be enough room to put together the lens and small diameter thin diaphragm on a short tube. I will go with the parts ...

Thanks again. I have a Meopta Travelling which I would like to improve. I have seen the post and threads on the Meopta referred to here but it does not deal with the issue of adding a condenser. The Quekett link does show that one can be added but I cannot deduce enough detail which is described as ...

Thank you for the custom build suggestion with examples. As I live in the UK the lens suggestion gets heaped up with extra taxes and heavy shipping costs. When I go to look for an alternative lens, say 18 to 20mm dia looking at the listed item with the ruler in the photos, would the choice of focal ...

The better models of toy microscopes from the past, those that promised 900 or even 1200X magnification did have a single lens condenser in the stage aperture. Why don't you try the stage of one of those or take the condenser out and cement it into your stage? That is a helpful idea. Assuming that ...

Hi all Having delved some more I found this up to date link explaining Hoffman Modulation Contrast. The suggested design of filters does seem to be within diy! https://www.olympus-lifescience.com/en/discovery/what-is-hoffman-modulation-contrast/ Hope this is of interest to others. It is for me. Woul...

Thank you to you both for the interesting reading list which leads me to think about how to exploit access to the objective focal plane using an IPC. Obviously as prompted by Peter, Hoffman filters are on the list but I think that I would struggle to create these by diy. During other threads on DIC ...

Thanks Peter. I’ll look forward to that.

In the meantime Google is having a struggle helping me find out what a Schlieren Stop is and some idea of how to fabricate one assuming that is the way forward.

Sorry to ask, but help !!

Many further thanks to get me started.

John

But the repurposed IPC is likely to produce different results, if the modulator is made of pol film which can be darkened or lightened with the pol wheel, and colour contrast given with the analyser wheel. It's quite exciting really. We shall see. Hi Pete I would be interested in hearing more about...

Hi All and those who come along later!!!

I will be interested in purchasing a complete good condition set up please if anyone comes across one.

Or seperately the silver slider.

Best and thanks whenever that happens.

Best, John

Thanks but the seller does not ship to the uk. I have been given some film based examples which allow me to experiment.

Best, John

Thanks Peter for the helpful observations.

Best Regards, John

Hi Peter Thanks for the information on mounting a Heine on an Optiphot. I am travelling at the moment but I will take a good look at options when I get back. Back to the IPC. At the time Nikon also had an alternative conventional phase set up with a condenser with smaller annuli and DLL objectives. ...

Thank you Peter for a great addition to this thread and explaining what I needed to know in great detail. I am now a "watcher" for a complete good one. I would be very interested please on a new post perhaps how with a mod the Heine can be mounted on "my" Optiphot. I am a fan. If a new post does not...

Thanks for the replies and suggestions. (I did not get any notifications and been out of town for a few days). I am missing the whole slider with the mounted annuli. I have short barrel nikon objectives. The seller on eBay that Pete mentioned seems to have blocked buyers from UK or non US. For exper...

Many thanks.

John

Hi all,

I am looking for a non repairable phase condenser where I can still safely extract the phase plates or annuli.

For experimentation in uk,

Let me know if you can help please.

Best and thanks, John

Hi all, I am looking for someone who has one of these please. https://i.ibb.co/nn5vQN2/IMG-0356-result.jpg I would like to have some measurements of the part below which I have missing. https://i.ebayimg.com/images/g/-OYAAOSwuvBhGd5V/s-l1600.jpg https://i.ebayimg.com/images/g/SKkAAOSwItBhGE4q/s-l160...

Yes, polarizer on top of the field lens. In the year since last posting in this thread, I've picked up a PZO head to accompany the PZO DIC condensers i have. Works fine on a BHT after making adapters, though I may eventually move it to a Zeiss WL, where it will look a bit more like an OEM scope. Co...

Hi All I came across the images I needed on this eBay Listing. https://www.ebay.co.uk/itm/324753478739?hash=item4b9cd0d453:g:oD8AAOSw8vRhGE4t https://i.ebayimg.com/images/g/-OYAAOSwuvBhGd5V/s-l1600.jpg https://i.ebayimg.com/images/g/SKkAAOSwItBhGE4q/s-l1600.jpg In case anyone reading this thread was...

Salutations to All !!

Has anyone an incomplete set?

Which parts do you have?

If you do would you be prepared to sell?

Thanks for all replies.

Best, John

Hi to all on this posting. I would like to have some extra photos of the silver coloured cross piece please. I borrowed the photo below from the post above. What I am very interested in seeing are the annular rings which I assume are there from reading about the IPC in various places. In particular ...

Hi All I hope this is right place to post this. Apologies to Admin if not. I came across this Blog a while ago and I would like to ask the Blogger for some extra information. I messaged the quoted email addy but it is bouncing. http://bettermicroscopy.blogspot.com/ Does anyone know any other way of ...

Thanks for the reminder.

Well, carried out that test, easier with the lower power of the three as expected, and infinites confirmed. Great result, John I must confess that when you asked about TL , I assumed that [if they turned-out to be infinity objectives] you were hoping to determine what focal length of Tube Lens they...

Well, carried out that test, easier with the lower power of the three as expected, and infinites confirmed.

Thanks again very much.

Best, John