13900496 - An arc of modest aurora borealis (Northern Lights) across the northern horizon, above a prairie meadow in the light of a bright waxing gibbous Moon, a day before Full. This was just after midnight on July 11/12, 2022 when the sky was also still lit by summer twilight colours, and with a weak display of noctilucent clouds also visible low in the northwest at left. The auroral curtains exhibit the usual green band and rays, but also upper altitude reds and purples and a faint blue tint at the very tops where the aurora is lit by the Sun. The aurora was never bright this night (Kp Index was 3 or 13900221 - A subtle and pastel aurora borealis (Northern Lights) in the northeast, above a prairie meadow at "Lone Tree Hill". The foreground and sky are lit by a bright waxing gibbous Moon, a day before Full, shining in the south. This was just after midnight on July 11/12, 2022. The auroral curtains exhibit the usual green band and rays, though with shades of green visible, perhaps from hydrogen-beta proton emission as well as oxygen electron emission, but also upper altitude reds and purples and a faint blue tint at the very tops where the aurora is lit by the Sun. The aurora was never bright this nig
