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So how many of these 11 arc-minutes squares are there in the sky? ...
Well, some quick math gives about 25.7 million of this size region to cover the entire sky. (assuming I didn't miss a decimal point
As far as number of galaxies in the photo, I'll leave that up to you to count. ;)
I think you may have missed a decimal point or several...
Assuming we take the night sky to be a hemisphere, it will span 2*Pi steradians in solid angle.
However one steradian is simply a square radian = (180/Pi)^2 degrees^2 = 3283 square degrees = 97670 (11 arcminutes)^2.
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Putting it all together means that the night sky will span about 614,000 of these 11-arcseond squares.
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So how many of these 11 arc-minutes squares are there in the sky? ...
Well, some quick math gives about 25.7 million of this size region to cover the entire sky. (assuming I didn't miss a decimal point
As far as number of galaxies in the photo, I'll leave that up to you to count. ;)
I think you may have missed a decimal point or several...
Assuming we take the night sky to be a hemisphere, it will span 2*Pi steradians in solid angle.
However one steradian is simply a square radian = (180/Pi)^2 degrees^2 = 3283 square degrees = 97670 (11 arcminutes)^2.
--
Putting it all together means that the night sky will span about 614,000 of these 11-arcseond squares.