This image was captured by Juan Carlos Casado, taken from Teide Observatory (IAC) in the Canary Islands. The image was taken during the spring equinox of 2010, using a full format DSLR with a fisheye lens, placed in a fixed position toward the west. The photographer first made exposures for the Sun every 30 seconds with a solar filter placed on the lens for the duration of about 6 hours (the bold rectilinear trail is the sun). After the sun set, exposures were made continuously (30 seconds each) to capture the motion of stars for about 5 hours. All images were then combined on the computer, and the distortion from the fisheye was also fixed.
The image you see is the result: the sun is passing the celestial equator while startrails on each celestial hemisphere (North and South) are curved in the opposite direction. The North Star (Polaris) is to the right of the image, above the solar laboratory "Pyramid Van der Raay" (known as Pyramid). The Teide Volcano (3,710 metres height) is in the background and La Palma Island is on the horizon
The image you see is the result: the sun is passing the celestial equator while startrails on each celestial hemisphere (North and South) are curved in the opposite direction. The North Star (Polaris) is to the right of the image, above the solar laboratory "Pyramid Van der Raay" (known as Pyramid). The Teide Volcano (3,710 metres height) is in the background and La Palma Island is on the horizon
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