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David Callejas

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January 20, 2019

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David Hoskin
Halifax, Nova Scotia, Canada

09/22/2023
11:10 am

Equipment Details:

For broadband: Celestron NexStar Alt-Az mount, Celestron 102mm f6.5 refractor, APM Herschell wedge, GSO 2.5X Barlow, Player One Apollo-M Mini camera with UV/IR cut and Green 58A filters.
For hydrogen-alpha: Celestron NexStar Alt-Az mount, Lunt 50mm solar telescope, GSO 2.5X Barlow, Player One Apollo-M Mini camera.

Post-processing Details:

AutoStakkert, Registax, Photoshop, MS Photo.

Image Details:

Broadband (left) and hydrogen-alpha (right) filtered images of sunspot group AR3435, which unleashed a very strong M8 class solar flare on 20 September 2023.

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!