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APOD: Aurora over Icelandic Waterfall (2023 Jul 04)
Posted: Tue Jul 04, 2023 4:05 am
by APOD Robot
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.
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
I find the lake looks as though it is in a hole' I must be
looking at it wrong!
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.