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Unusual Sardinian sunset
- Frank Ryan
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15 years 2 months ago #76364
by Frank Ryan
My Astrophotography
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Replied by Frank Ryan on topic Re:Unusual Sardinian sunset
Whats your point?
My Astrophotography
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- Seanie_Morris
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15 years 2 months ago #76366
by Seanie_Morris
Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.
Replied by Seanie_Morris on topic Re:Unusual Sardinian sunset
Aren't these ray phenomenae called Crepescular Rays?
Seanie.
Seanie.
Midlands Astronomy Club.
Radio Presenter (Midlands 103), Space Enthusiast, Astronomy Outreach Co-ordinator.
Former IFAS Chairperson and Secretary.
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- Frank Ryan
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15 years 2 months ago #76369
by Frank Ryan
My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers
Replied by Frank Ryan on topic Re:Unusual Sardinian sunset
They sure are;
www.atoptics.co.uk/rayshad.htm
They are usually formed by clouds on or behind the horizon.
I ment to say by best guess is aside from clouds that the only
other thing would be the Pyernees that would be big enough to
cast a shadow that size.
I'm taking Mikes question refering to the distance they are
to the observer (in sardinia)is that they would be too far
away to cast the shadows?
I'm not so sure,
Earth bieng round and all and the suns light source bieng
so broad.
The shadow of the Earth can be seen sometimes cast when the conditions are right.
Taking the steep angle of both rays it may well could be the
tips of the ranges.
OR
big clouds.
Whos to say really?
You could send the picture into spaceweather.com
and get them to ask the experts to take a look at it.
www.atoptics.co.uk/rayshad.htm
They are usually formed by clouds on or behind the horizon.
I ment to say by best guess is aside from clouds that the only
other thing would be the Pyernees that would be big enough to
cast a shadow that size.
I'm taking Mikes question refering to the distance they are
to the observer (in sardinia)is that they would be too far
away to cast the shadows?
I'm not so sure,
Earth bieng round and all and the suns light source bieng
so broad.
The shadow of the Earth can be seen sometimes cast when the conditions are right.
Taking the steep angle of both rays it may well could be the
tips of the ranges.
OR
big clouds.
Whos to say really?
You could send the picture into spaceweather.com
and get them to ask the experts to take a look at it.
My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers
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- JohnMurphy
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15 years 2 months ago - 15 years 2 months ago #76371
by JohnMurphy
Clear Skies,
John Murphy
Irish Astronomical Society
Check out My Photos
Replied by JohnMurphy on topic Re:Unusual Sardinian sunset
Crepuscular rays are fairly common, most often seen at sunrise and sunset, hence the name crepuscular (around dawn or dusk). Usually caused by cloud; in this case it seems the cloud is below the horizon leading to a spectacular image. Well done, nice catch.
Here is a shot I took a couple of years back.
Clear Skies,
John Murphy
IAS
Check out My Photos
Here is a shot I took a couple of years back.
Clear Skies,
John Murphy
IAS
Check out My Photos
Clear Skies,
John Murphy
Irish Astronomical Society
Check out My Photos
Last edit: 15 years 2 months ago by JohnMurphy.
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- Frank Ryan
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15 years 2 months ago #76372
by Frank Ryan
My Astrophotography
Shannonside Astronomy Club __________________________________________
Meade ETX-125PE, Bresser 10 x 50 Binos & Me Peepers
Replied by Frank Ryan on topic Re:Unusual Sardinian sunset
This shot is quite similar to Conns
www.atoptics.co.uk/atoptics/rayim2.htm
from this page
www.atoptics.co.uk/atoptics/rayim1.htm
www.atoptics.co.uk/atoptics/rayim2.htm
from this page
www.atoptics.co.uk/atoptics/rayim1.htm
My Astrophotography
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15 years 2 months ago #76375
by michaeloconnell
Replied by michaeloconnell on topic Re:Unusual Sardinian sunset
Barberskum wrote:
It just seems an incredible dstance, allowing for the curvature of the earth, lack of cloud etc.
At the altitude of his site, one can only see as far as 22 miles out to sea. The nearest mountains are approx 35 miles away and are in the path of the setting sun. Therefore, I would think it plausible that these mountains are more likely to be the cause of the rays than some mountains which are 350 miles away.
However, I am open to correction.
Michael.
Whats your point?
It just seems an incredible dstance, allowing for the curvature of the earth, lack of cloud etc.
At the altitude of his site, one can only see as far as 22 miles out to sea. The nearest mountains are approx 35 miles away and are in the path of the setting sun. Therefore, I would think it plausible that these mountains are more likely to be the cause of the rays than some mountains which are 350 miles away.
However, I am open to correction.
Michael.
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