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David Callejas

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January 20, 2019

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Patricio Leon
Santiago, Chile

04/02/2024
10:52 am

Equipment Details:

Newt 4.5" + solar film, 1/640s ISO100

Post-processing Details:

crop, B/C

Image Details:

Over the solar image of today, an almost perfectly blank Sun, I wrapped the coordinates grid of this day Sun orientation, where the North pole is “P” and Earth’s North is a vertical line through the center of the solar disc; this is to illustrate how Sun and Earth orientation differ cyclically every day of the year except on specific dates i.e. aphelion and perihelion (for the N-S axis)

Posted

January 20, 2019

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David Callejas

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About the Author:

David Callejas, Marketing Director, helps bring EarthSky's content to the world via online ads and other products. He creates strategies that help people around the world find us and appreciate the work we do. He helps manage the EarthSky Store and bring to you the new products that you love. He's the chief liaison between EarthSky.org and the world of commerce. All that, plus he helps post content and populate our pages on Facebook, Google+ and Twitter. Go David!