Page 1 of 1

APOD: Aurora over Icelandic Waterfall (2023 Jul 04)

Posted: Tue Jul 04, 2023 4:05 am
by APOD Robot
Image Aurora over Icelandic Waterfall

Explanation: It seemed like the sky exploded. The original idea was to photograph an aurora over a waterfall. After waiting for hours under opaque clouds, though, hope was running out. Others left. Then, unexpectedly, the clouds moved away. Suddenly, particles from a large solar magnetic storm were visible impacting the Earth's upper atmosphere with full effect. The night sky filled with colors and motion in a thrilling auroral display. Struggling to steady the camera from high Earthly winds, the 34 exposures that compose the featured image were taken. The resulting featured composite image shows the photogenic Godafoss (Goðafoss) waterfall in northern Iceland in front of a very active aurora in late February. The solar surface explosion that expelled the energetic particles occurred a few days before. Our Sun is showing an impressive amount of surface activity as it approaches solar maximum, indicating that more impressive auroras are likely to appear in Earth's northern and southern sky over the next few years.

<< Previous APOD This Day in APOD Next APOD >>

Re: APOD: Aurora over Icelandic Waterfall (2023 Jul 04)

Posted: Tue Jul 04, 2023 6:59 pm
by johnnydeep
Fireworks in the sky - how appropriate for America's Independence Day! (Though this image is from February 27 in Iceland...)

Re: APOD: Aurora over Icelandic Waterfall (2023 Jul 04)

Posted: Tue Jul 04, 2023 7:49 pm
by orin stepanek
WaterfallAurora_Letelier_960.jpg
I find the lake looks as though it is in a hole' I must be
looking at it wrong!
Happy_Cat_Smiling.jpg
Happy kitty!

Re: APOD: Aurora over Icelandic Waterfall (2023 Jul 04)

Posted: Wed Jul 05, 2023 5:28 pm
by VictorBorun
I struggle to understand the description.
the 34 exposures were all in one minute at night?
The blue sky is night sky scattering low Moon's light?

Re: APOD: Aurora over Icelandic Waterfall (2023 Jul 04)

Posted: Wed Jul 05, 2023 5:39 pm
by Chris Peterson
VictorBorun wrote: Wed Jul 05, 2023 5:28 pm I struggle to understand the description.
the 34 exposures were all in one minute at night?
The blue sky is night sky scattering low Moon's light?
Sounds like it was actually a panorama made from 31 2-second exposures. So yeah, about a minute. And a 2-second exposure at ISO 6400 and a fast lens will certainly capture blue sky if there's a 50% Moon.