Nightfall

tenerife star trails
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Taken simultaneously with Star Trails over Observatorio del Teide, from the exact same spot, with a separate camera pointed in a different direction.

It should be noted that this photograph was created using slightly a different processing method in comparison to the other star trail images, making the stars less pronounced, with a greater emphasis on the hue differences of the sky background. This was achieved by stacking the material two times: once by averaging out the data and once with a standard lighten method. Finally, both stacks were blended together in Photoshop.

The central brightening near the horizon is a result of the phenomenon of zodiacal light, which was also very prominent to the naked eye.

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