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David Callejas

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January 20, 2019

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David Hoskin
Halifax, Nova Scotia, Canada

06/18/2022
09:30 am

Equipment Details:

Lunt 40mm solar telescope, ZWO ASI290MM camera with GSO 2.5X Barlow, SkyWatcher EQ6R mount.

Post-processing Details:

The best 120 frames of video stacked were with AutoStakkert, IMPPG was used for sharpening and levels, addition of false color and other post-processing was with Photoshop and PhotoScape X.

Image Details:

This hydrogen alpha image shows the area around sunspots AR3032 and AR3030 near the northwest limb of the Sun. The central umbra of the sunspots appear white in this inverted image. The large filament near the center of the image spans nearly a quarter of the Sun's diameter! Dark areas of plage and several nice prominences are also visible.

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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!