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David Callejas

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January 20, 2019

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Michael Teoh
Penang, Malaysia

06/21/2021
06:33 pm

Photographer's Website

Equipment Details:

Lunt LS50THa telescope
QHY5L-II-M camera

Post-processing Details:

Single frame extracted from video sequence
Wavelet sharpening with Registax 6
Enhancement and false color with Photoshop 2020

Image Details:

First successful attempt at taking a sunset image in the hydrogen alpha wavelength. Despite some thin clouds, the surface features can be seen clearly, including the sunspot in AR2833, a long filament nearby, and a few faint prominences near the limb. The result is beyond my expectation, given that the Sun was low in western sky at just 13° above horizon.

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!