X = c ( b (a exp (n(1+dT)/a) - 1) + n )         

n ... counts (sensor output)        

X ... physical quantity (total radiation in [W/m²]               

or horizontal illumination [Lux])

a = 1.4434e+05, 

b = 3.25274e-03, 

c = 1.3120e-08, 

d = 5.2776e-03 [W/m²]


a = 1.4434e+05, b = 3.25274e-03, c = 1.4493e-06, d = 5.2776e-03  [Lux]        

[Background x0= 7.96 mlx]

1 Lux = 0,001496 Watt/m2

683,002 Lux pro W/m²
1,464mW/m² pro Lux

The physics of stars and planets are closely connected topics. The Sun, as well as other stars, has an enormous influence on its planets. Intense radiation at short wavelengths (X-ray - UV) drives thermal escape processes, whereas stellar winds and CMEs lead to non-thermal escape processes, especially on non- or weakly magnetized planets. Therefore, the properties and evolution of stellar activity has important consequences for the properties and evolution of planets, and consequently, habitability.