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David Callejas

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January 20, 2019

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Ashish kumar
Hyderabad, India

07/18/2021
04:41 am

Photographer's Website

Equipment Details:

Telescope - 8" GSO manual dobsonian
Camera- ZWO ASI 2400 MC pro
Barlow- 2" 2x GSO Barlow

Post-processing Details:

70% Frames stacked out of 3625 in Autostakkert.
Wavelets in registax6
Curves, levels in Astrosurface

Image Details:

The Eye of Jupiter & Ganymede's shadow -
Clouds are undoubtedly one of the worst enemy of Astronomy, Fortunately got 2 mins of clear sky with little bit of intermittent clouds in between. Ganymede, the largest moon of solar system was transiting the Jupiter at the speed of 10km/sec. Ganymede completes one trip around the Jupiter in 7 earth days gives nice chance to spot the shadow transit. Being the largest moon in our solar system, it casts the largest shadow as well almost double the size of its own (9000 km). Spotting GRS along with shadow transit was cherry on cake.

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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!