It’s a perfect video for a Snuggly Sunday.
The Solar Dynamics Observatory (SDO) celebrates its 5th anniversary since it launched on February 11, 2010. This time-lapse video captures one frame every 8 hours starting when data became available in June 2010 and finishing February 8, 2015. The different colors represent the various wavelengths (sometimes blended, sometimes alone) in which SDO observes the sun.
Couldn’t get to Times Square along with the million or so tourists standing around on a street corner trying not to need to go to the bathroom, lest they lose their spot? Well, for those who think that sounds like a nightmare, but still want to beauty of being there over the course of the day, The Timelapse Group has the perfect video for you.
This time-lapse, released this week by the European Space Agency, was taken originally as a series of over 12,500 photographs by astronaut Alexander Gerst during his six month stay on the International Space Station.
Elektro-L is located ~40,000 km above the Indian ocean, and it orbits at a speed that causes it to remain over the same spot as the Earth rotates. The satellite creates a 121 megapixel image (11136×11136 pixels) every 30 minutes with visible and infrared light wavelengths. The images were edited to adjust levels and change the infrared channel from orange to green to show vegetation more naturally. The images were resized by 50%, misalignments between frames were manually corrected, and image artifacts that occurred when the camera was facing towards the sun were partially corrected. The images were interpolated by a factor of 20 to create a smooth animation. The animation was rendered in the Youtube 4K UHD resolution of 3840×2160. An original animation file with a resolution of (5568×5568) is available on request.
To answer frequently asked questions; why are city lights, the Sun, and other stars not visible? City lights are not visible because they are thousands of times less bright than the reflection of sunlight off the Earth. If the camera was sensitive enough to detect city lights, the Earth would be overexposed. The Sun is not visible due to mechanisms used to protect the camera CCD from direct exposure to sunlight. A circular mask on the CCD ensures that only the Earth is visible. This mask can be seen as pixelation on Earth’s horizon. The mask also excludes stars from view, although they would not be bright enough to be visible to this camera.
Stunning short film by Knate Myers.
A National Geographic timelapse of Iceland for your Sunday morning.