Green formations can also be observed on the lower edges of large sunspots as these are much darker than the Sun. In these cases one should not consider the green ray on the lower part of the spot, but on the upper part of the Sun below the spot. On the evening of August 7th, 2023 I tried to take the green ray on the large from Pisa, Italy. In the image I propose you can see mainly four effects: the Green flash on almost all sunspots and finally the Green segment on the upper edge of the solar disk in both shots. Here are the shooting data: Nikon Z9 in APS-C mode with Nikon Z 400/4.5 plus 2X doubler (equivalent focal length of 1200mm) and exposure times of 1/20,000 f/40

Daten zum Bild