There are certain wavelength bands that astronomers try to avoid at all cost. At about 800-850nm, the sky has very strong emissions, which adversely affects astronomic imaging, but I wanted to see whether one can see nothern lights in this range as well. As we anchored for a bit, I tried it out and – success! Aurorae look amazing and different at those wavelengths, but it is extremely tricky to shoot. The sensitivity of camera sensors goes down fast at those wavelengths, so it was impossible to photograph from a moving ship.