Search found 348 matches

by Alan Wood
Sun Feb 14, 2021 4:38 am
Forum: Beginners Micro
Topic: Bought an Olympus BH-2 and a Nikon SC; I have some questions..
Replies: 2
Views: 166

Re: Bought an Olympus BH-2 and a Nikon SC; I have some questions..

Javier I have lots of documents for the Olympus BH-2: http://www.alanwood.net/olympus/downloads.html There is a set of exploded parts diagrams for the LB objectives, which might help to fix the spring on your 100, and there are instructions too: http://www.alanwood.net/downloads/olympus-lb-objective...
by Alan Wood
Fri Feb 12, 2021 6:46 am
Forum: Equipment Discussions
Topic: Cleanest microscope slides for D/F microscopy
Replies: 10
Views: 1098

Re: Cleanest microscope slides for D/F microscopy

Lou

In the UK, you can buy surgical spirit from Boots:

https://www.boots.com/boots-surgical-sp ... l-10075125

Active ingredients: Methyl Salicylate, Diethyl Phthalate, Castor Oil.
Other ingredients: Ethanol 90%. Methanol 5% w/w.

Alan Wood
by Alan Wood
Tue Feb 09, 2021 4:09 am
Forum: Equipment Discussions
Topic: Trinocular Microscope Tube
Replies: 14
Views: 293

Re: Trinocular Microscope Tube

Owen

You mentioned changing your Canon EOS 500D.

That is a good camera for photomicrography. It works very well with the free EOS Utility software, which lets you control everything from your computer screen.

Alan Wood
by Alan Wood
Mon Feb 08, 2021 6:21 am
Forum: Equipment Discussions
Topic: Trinocular Microscope Tube
Replies: 14
Views: 293

Re: Trinocular Microscope Tube

Owen We are making good progress. What you need now is one the adapters that were common for 35mm SLRs. They are usually in 2 parts. The lower part clamps to a 25mm tube and an eyepiece fits inside it. The upper part provides a few inches of extension and has a T-mount on top. You will need a T-moun...
by Alan Wood
Mon Feb 08, 2021 5:23 am
Forum: Equipment Discussions
Topic: Trinocular Microscope Tube
Replies: 14
Views: 293

Re: Trinocular Microscope Tube

Owen

That is an unusual adapter.

Let's start with the vertical tube on the trinocular head.

1) Is the outside diameter 25mm?

2) Can you put one of the viewing eyepieces in it? If you can, is the image parfocal with the other eyepiece?

Alan Wood
by Alan Wood
Mon Feb 08, 2021 4:27 am
Forum: Equipment Discussions
Topic: Trinocular Microscope Tube
Replies: 14
Views: 293

Re: Trinocular Microscope Tube

Owen Please can you post a photograph of the trinocular head and the camera adapter(s)? And tell us which camera you are using? C-mount cameras have only a short distance from the front of the camera to the sensor. Canon EOS digital SLRs have a much longer distance, so an EOS digital SLR will not no...
by Alan Wood
Fri Feb 05, 2021 8:38 am
Forum: Equipment Discussions
Topic: Even DF illumination for 4x objective
Replies: 16
Views: 534

Re: Even DF illumination for 4x objective

Which Nikon series condensers fit, Alan? John I do not have a Nikon catalogue that shows their condensers with a circular dovetail fitting, so I do not know exactly which dark-ground condenser I had. I still have a Nikon Achromat NA 0.85 condenser that fits my BH-2, but I don't know its model name ...
by Alan Wood
Fri Feb 05, 2021 3:09 am
Forum: Equipment Discussions
Topic: Even DF illumination for 4x objective
Replies: 16
Views: 534

Re: Even DF illumination for 4x objective

The Olympus condenser dovetail is slightly bigger than the Nikon one. It is definitely possible to use Nikon condensers on Olympus microscopes; I used a Nikon dark-ground condenser on my BH-2 until I found a cheap Olympus one. It may not be possible to use Olympus condensers on Nikon microscopes, I ...
by Alan Wood
Fri Jan 08, 2021 3:54 am
Forum: Beginners Micro
Topic: Olympus BH-2 Camera adapter
Replies: 6
Views: 977

Re: Olympus BH-2 Camera adapter

Phil I guess your MCA photo eyepiece is similar to the Olympus NFK 2.5× (intended for 35mm film, so ideal for full-frame digital); the top part is narrow enough to slide down inside the circular dovetail and sit properly on the ledge. So all you need is an Olympus Photomicro Adapter L (or equivalent...
by Alan Wood
Fri Jan 01, 2021 6:10 am
Forum: Beginners Micro
Topic: Microscope purchase advice
Replies: 2
Views: 536

Re: Microscope purchase advice

Phil For that amount of money you could easily buy a used trinocular microscope with good objectives from one of the big 4 companies, Leica/Leitz, Nikon, Olympus and Zeiss. For example an Olympus BH-2 with SPlan objectives. There are free PDFs of Olympus catalogues and instructions here: http://www....
by Alan Wood
Sat Dec 26, 2020 4:11 am
Forum: Beginners Micro
Topic: Microscope for crystal photography advice
Replies: 9
Views: 731

Re: Microscope for crystal photography advice

Phil Here are the simplest Olympus items, the A-POL polariser that sits on top of the light outlet (easy to rotate, easy to add a retarder on top of it), and the B-AN analyser that fits in the recess under the head: olympus-polariser-analyser-700.jpg Before I found the analyser, I used a disc cut fr...
by Alan Wood
Tue Oct 06, 2020 10:38 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Olympus MPlan 10x/0.25
Replies: 6
Views: 2066

Re: Olympus MPlan 10x/0.25

Pau is correct.

This objective needs to be used with an FK photo eyepiece for photomicrography, or with WF 10× eyepieces for visual observation.

The eyepieces are shown at the end of this brochure:
file:///C:/Users/Alan/Documents/HTMLdev/alanwood.net/downloads/olympus-micro-optics.pdf

Alan Wood
by Alan Wood
Tue Oct 06, 2020 4:20 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Olympus MPlan 10x/0.25
Replies: 6
Views: 2066

Re: Olympus MPlan 10x/0.25

The M Plan objectives were supplied with the BH version of BHM metallurgical microscope. I have not yet found a brochure, but I have the instruction manual: http://www.alanwood.net/downloads/olympus-bh-bhm-instructions.pdf There was a later BH-2 version of the BHM that used infinity-corrected object...
by Alan Wood
Tue Oct 06, 2020 2:31 am
Forum: Macro and Micro Technique and Technical Discussions
Topic: Olympus MPlan 10x/0.25
Replies: 6
Views: 2066

Re: Olympus MPlan 10x/0.25

Olympus M Plan objectives are intended for reflected light use, with no coverslip.

They are finite, designed for 210 mm tube length.

http://www.alanwood.net/olympus/microsc ... tives.html

Alan Wood
by Alan Wood
Tue Sep 15, 2020 9:03 am
Forum: Equipment Discussions
Topic: Question about window on the underside of Olympus trinocular head
Replies: 25
Views: 5559

Re: Question about window on the underside of Olympus trinocular head

Jonathan

The Olympus vertical monocular tube (BH2-PT) is just a tube - there is no glass in it.

The inclined monocular tube (CH-MO45) has the same sort of window as the binocular and trinocular heads.

They are both parfocal with the binocular and trinocular heads.

Alan Wood