Dear Colleagues, We are happy to announce the third edition of our Optics and Microscopy Workshop! This time we will meeting one of the most beautiful places in Poland – Biebrza marshes! The workshop will be a *thorough, hands – on introduction to optics and microscopy*. With our instructor, Fred Marbach from Crick Institute, we will start from absolute basics – *photons, ray diagrams and lenses*; then move to building simple optical system, just to *end up building DIY bright-field and fluorescent microscopes.* We will image neurons (hopefully!), and understand every last bit of how that image came to be (this is a certainty!). During the workshop you will build an intuition for optics, allowing you to reason about optical systems found in the lab (and in publications): you will understand the equipment you are using on a much deeper level. Workshop will take place *May 10-12th in Goniądz*, in Dwór Bartla, overlooking the beautiful Biebrza river, which at this time of the year provides great opportunities for birdwatching. The deadline for registration is April 5th,* the cost of the workshop is EUR 250 (but we provide fee waivers if needed)*. The cost includes the r*egistration fee, accommodation, breakfast and lunch.* Please find the registration form and more info here - https://nenckiopenlab.org/optics-and-microscopy-workshop-2024/ Best! NOL Team -- --- Mateusz Kostecki PhD Student Knapska Laboratory Nencki Institute 02-093 Warsaw, Pasteura 3, Poland https://twitter.com/mtkostecki https://evolvingbehavior.blog/