So a few weeks ago, a relative of mine was looking for a new home for his old ZEISS research microscope.
And while I'm not a biologist - I'm a pretty big optics and photography nerd so I obviously couldn't decline the offer.

Let me take you onto a little journey to the #microcosmos 🧵

#zeiss #microscope #microscopy #fruitfly #brineshrimp #seamonkey

But first, this thing hadn't been used for years, so I had to clean it a bit. Maybe it was also just an excuse to understand how this thing works :)

It's an inverted design and has two optical paths, one for the binoculars and one for the camera.

#microscope

I started with some 50 year old permanent slides shown in the first post. The first one shows a fruit fly and the second one a brine shrimp (sea monkey), both under darkfield illumination.

My camera adapter hadn't arrived at this point, so I was just taking pictures through the binoculars. Though that will give you a better feel how it looks in person, like diving into an entirely different universe.

Once my camera adapter had arrived I went to collect some dirty water from a puddle. It's winter here, so it was frozen over, but even then, there was an absolute huge amount of life in there.
All following posts came from the same sample.

First off is a #Rotifer digging through some decomposing algae.

#microscopy #photography

Next up is a #Ciliate. These one-celled organisms are covered in small hairs that they use to move around.
Also, this thing was zooming, I had a hard time to keep up with it!
To understand what was even going on, I took another video at 4x slow motion and a different imaging technique (phase contrast).
Now the small moving hairs become visible. This technique also reveals all the small organelles inside of it.
This little fella is a #tardigrade and I absolutely adore how chubby it is with it's eight little legs. Slowly floating through space - umm I mean a water droplet.
Here is specimen of #Chlamydomonas , small unicellular green algae with two flagella. When I saw it it was just spinning around like crazy. Only in this 8x slow motion video the flagella became visible.

I'm pretty sure there will be more posts like this in the future. I already have plans how to upgrade the microscope, but we'll see.

If you need more amazing microscope content in the meantime, I highly recommend checking out the YouTube channel #JourneytotheMicrocosmos. They have fantastic narrated videos about these tiny otherworldly creatures.
https://www.youtube.com/watch?v=bPwVOggUp4M

How Do Protozoa Get Around?

YouTube
@stim3on Thank you for sharing! These are really interesting videos.
@stim3on One of the few species with a Wikipedia page about their missions into space: https://en.m.wikipedia.org/wiki/Tardigrades_in_space
Tardigrades in space - Wikipedia

@stim3on Space… what if we are also living under a microscope and some utter giant is looking at us through a microscope?