Contribute to the UHU Experiment by Your Own Recordings

We welcome individual photos, photo sequences, and/or video recordings taken during the AX4 mission (the latest dates are in the webpage of the AX4 mission) with the aim of capturing Transient Luminous Events (TLEs).

The challenge: how many TLEs can the community of observers capture from the ground while the AX4 crew aims to photograph them from the International Space Station?

Please make sure to familiarize yourself with what these phenomena are and how you can capture them (“How to observe TLEs?” (link) section).

To help us utilise your records in scientific research, please collect the following information and share it with us together with your observation files.

• Camera model, lens type, key settings (e.g. ISO, exposure time)
• A photo, screenshot, or short video on a display that shows the GPS time with an accuracy of at least 1 second.
• GPS coordinates of the observation site (including its altitude)
• At least rough camera pointing direction
• Your own observation notes

Please share your recordings together with the metadata in a downloadable package (e.g., a zip file) via Google Drive, Dropbox, or similar services and contact us via the ‘Contact‘ section.

Deadline: July 31, 2025

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