About MAJA 4.11.0 and MAJA 4.12.0
The two most recent minor upgrades of MAJA introduce only minor changes compared to version 4.10 which supports the latest CAMS 49r1 products. Therefore, you may wish to keep your version 4.10 for now. Here is why:
Versions 4.11 and 4.12 mainly introduce functionalities for preparing the future Trishna mission. Thrishna is an Indian-French high-resolution space-time imaging mission in the thermal infrared for observing the Earth’s surface, expected to launch in 2027. While the TIR instrument lies at the heart of the mission, Thrishna will also feature six VNSWIR spectral bands. These imply atmospheric correction in the shortwave domain, which is where MAJA comes in. These new sensors bring new challenges, whether it be in terms of product format or sensor geometry, requiring our teams to perform new studies and code adaptations. This is why we publish minor versions dedicated to preparing the ground segment for Thrishna, even though they are of little interest to regular Maja users who focus on Sentinel-2 products.
However, you may still be interested in some of the latest bug fixes, particularly those relating to issue 382. This issue caused startmaja’s DTM creation tool to silently produce incomplete DTMs from Copernicus tiles, leading to erroneous estimates of the AOD in areas of the tiles where the altitude had been incorrectly set to zero. This has been fixed since version 4.11.1. You can find the full list of bug fixes here.

