The AX-4 mission is happening on the ISS and we produce a list of observation targets for the astronauts daily. Whether any of the forecasted targets will be executed depends on the schedule of the crew and we get to know that only later. Thunderstorm targets that can likely be monitored by ground-based observers, too, […]

At the time of writing this post, the Ax-4 mission is scheduled for launch on 25 June at 6:31 UTC. With the launch of the mission, the UHU ground-based TLE observation campaign starts, too. Regardless of the launch of the Ax-4 mission, we start the TLE ground observation campaign in the framework of the UHU […]

At the end of the section summarizing the most important characteristics of TLEs, (and also in this post) video footages have been inserted on thunderstorms and TLEs observed on different continents. These high-quality records demonstrate the level of photography one can reach with acquiring some knowledge and having patience and perseverance. Starting these activities requires […]

Please keep an eye on the AX-4 website for information on the launch date of the space mission. Please note that the associated ground observation campaign starts on the launch date. The launch date has been delayed recently more times due to different reasons, but it can be announced any minute.

A new call for submitting TLE photos was added and the description on the observation methodology has been extended. Enjoy! 🙂 We are looking forward to receiving your observations and photos!

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