Re:Astronomy Picture of the Day (timelapse with Earth rotating)
by eding on Friday June 03, 2011 @05:39AM
(#2615712)
Flying over the north pole at night, my United 777 once flew perfectly anti-rotation for a while, and then non-rotation when over the axis-pole. the moon and stars never moved for over an hour - as the pilot pointed out.
Re:Astronomy Picture of the Day (timelapse with Earth rotating)
by wedesoft on Friday June 03, 2011 @05:53AM
(#2615736)
Nice idea. But they only used 2D translation and rotation. Ideally they would have used a homography (projective transformation).
Unless other effects are ruling the image (radial distortion, atmospheric diffraction) this should lead to a better result.
Re:Astronomy Picture of the Day (timelapse with Earth rotating)
by lostbit on Friday June 03, 2011 @10:16AM
(#2616393)
The idea of the video was to remove Earth rotation from the view. This removal was digitally made.
One of the original videos used in this compilation - with the traditional "sky is moving" feeling - is this one: http://vimeo.com/22439234. It's the best, in my opinion.
Re:Astronomy Picture of the Day (timelapse with Earth rotating)
by run4yourlives on Friday June 03, 2011 @03:26PM
(#2617662)
Because it is just one of trillions of spinning rocks, subject to the same concerns than any particular grain of sand on any given beach would be.
If we want our species to survive, we need to be more than occupiers of a single grain of sand.
As to the first point, I think the poster was meaning that the stars' movement is not the main cause of the nightly patterns across the sky, the earth's movement is.
One of the original videos used in this compilation - with the traditional "sky is moving" feeling - is this one: http://vimeo.com/22439234. It's the best, in my opinion.
But thank you for the link. It's a great video.
Yes they are.
A reminder that we need to get off this spinning rock asap.
Why?
If we want our species to survive, we need to be more than occupiers of a single grain of sand.
As to the first point, I think the poster was meaning that the stars' movement is not the main cause of the nightly patterns across the sky, the earth's movement is.