Download - observateur

Transcript
Page 1: observateur

observateur

3000 km/s

Vr = 0 km/s

Vr = -3000 km/s

Vr = + 3000 km/s

l Ha ≈ 6510 Å

l Ha ≈ 6563 Å

l Ha ≈ 6580 Å