Here is a picture of this nice active region taken on May 12. A few tens of minutes later, there was a beautifull flare, but the clouds became too thick and prevent any imaging ...
Here is a picture of the optical setup :
From top to bottom :
- back of the Hat 8",
- AiryLab f/27 telecentric,
- DayStar PE 0.6A
- Coronado SMn35 fused silica etalon, 0.5 A, with its 2 A BF,
- tilt system,
- Basler 1920-155 camera.