Red Auroras
A minor solar wind stream is buffeting Earth's magnetic field today, and this is sparking auroras at high latitudes. Ray Stinson photographed the display during the morning hours of July 28th over Glacier National Park in St Mary, Montana:
"The auroras were weak, but I was able to record them using a 20 sec exposure at ISO 4000," says Stinson. "Also, a meteor streaked by during the exposure."
More auroras are possible tonight, albeit weak ones. Long exposures such as Stinson used will help bring out their color and underling structure. NOAA forecasters estimate a 20% chance of polar geomagnetic storms on July 28-29 as the solar wind continues to blow.
No comments:
Post a Comment