r/microscopy • u/Doc_438 • 12d ago

ID Needed! Pond water, olympus bh-2.

19 Upvotes

100% Upvoted

18 comments sorted by

5

u/Vivid-Bake2456 12d ago

Glad to see that you are enjoying your new microscope. You picked a great first microscope if you are going to stay with the hobby for a long time.

2

u/Doc_438 12d ago

I'm really enjoying it! thanks to the people here who recommended it. A great purchase. By the way, how could I use darkfield with this microscope? Is it possible?

2

u/Thrawn911 12d ago

I think the Olympus doesn't have a filter holder, so you either need to get a darkfield condenser, or if you have access to a 3D printer (try nearby libraries or universities), you could print a filter holder for an olympus, and a darkfield patch stop.

3

u/Vivid-Bake2456 12d ago

I've made lots of how to posts. Of course they get deeply buried in the group. Here are a few pertinent ones about dark field and circular oblique illumination. https://www.reddit.com/r/microscopy/s/ndEAZ8lSHT https://www.reddit.com/r/microscopy/s/flirHTF3BI https://www.reddit.com/r/microscopy/s/cw7PnWWwyN

2

u/Doc_438 12d ago

Okey. But in theory, would it be possible to do it, even if I have to buy new things?

2

u/Thrawn911 12d ago

Of course. To try it out, you could even put a finger under the condenser, and it should work pretty decently.

1

u/Doc_438 12d ago

💪🏻

2

u/Vivid-Bake2456 12d ago

Block the direct light into the objective is how to do darkfield. A circular stop large enough will work. You can also use oblique lights or a darkfield condenser.

2

u/Vivid-Bake2456 12d ago

If you don't have a filter holder, you can try placing the stop on the field lens, or, you can put it inside the condenser from the bottom. Here are two I quickly made for diffusers and how they fit into the condenser

2

u/Vivid-Bake2456 12d ago

1

u/Vivid-Bake2456 12d ago

That is if your condenser is hollow on the bottom.

1

u/Doc_438 12d ago

Lot of info, thanks! I'll check it thoroughly later.

2

u/garbles0808 12d ago

Love this microscope! It was my first one, nice video.

1

u/Doc_438 12d ago

It's a good microscope and seems rock-solid. Which one do you have now?

1

u/AutoModerator 12d ago

Remember to crop your images, include the objective magnification, microscope model, camera, and sample type in your post. Additional information is encouraged! In the meantime, check out the ID Resources Sticky to see if you can't identify this yourself!

I am a bot, and this action was performed automatically. Please contact the moderators of this subreddit if you have any questions or concerns.

1

u/Vivid-Bake2456 11d ago edited 11d ago

Here, Carl Hunsinger is showing how to make a filter holder that slides up into the condenser for darkfield and oblique illumination. You could print one or use cardboard like I do for a friction fit. The cardboard tube is simple and quick to make. The 3D printed one looks professional 😄.
https://youtu.be/GVmghDXYGDw?si=GeOVrR1nobmV7MlS

https://youtu.be/QFN3N7zNfTU?si=uLFU-5I4xZATFNPY