Lunar halo
Object: Lunar halo
Optics: Lentille Nikkor 20mm f/2.8
Camera: Nikon F3
Film Kodak Supra 400 Pro
Exposure: 8 sec
Québec, Qc
Canada
January 10, 2001
The lunar halo results from the reflection of moonlight on ice particles at high altitudes. To highlight the halo, the moon must be overexposed, thus inflating its apparent diameter. Reflection on the UV filter at 5 o'clock indicates the actual diameter of the lunar disc.