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David Callejas

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January 20, 2019

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David Hoskin
Halifax, Nova Scotia, Canada

04/19/2024
11:30 am

Equipment Details:

Celestron 102XLT refractor, APM Herschel wedge, ZWO ASI290MM with Player-One photosphere filter, SkyWatcher EQ6R Pro mount.

Post-processing Details:

Best 250 out of 1000 frames were stacked with Autostakkert, wavelets with Registax, additional post-processing with Photoshop and Photoscape X.

Image Details:

This filtered image shows (from left to right) sunspot groups AR3646, AR3647, AR3645, AR3638, and AR3637. According to Spaceweather.com AR3645 has already unleashed M-class solar flares and may soon unleash a more powerful X-class solar flare.

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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!