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David Callejas

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January 20, 2019

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David Hoskin
Halifax, Nova Scotia, Canada

02/01/2022
11:00 am

Equipment Details:

Celestron 102mm f/6.3 refractor with Baader solar filter, Canon EOS T3i DSLR (ISO-400, 1/200 sec) with 2.5x Barlow and #58A filter to increase contrast

Post-processing Details:

A mosaic of 2 separate images was produced using Photoshop; other post-processing with Photoshop and PhotoScape X.

Image Details:

Solar cycle 25 seems on track to be quite active. In this image there are 5 different sunspot groups visible. One of these sunspots, AR2936 at the 2 o'clock position nearest the limb, was the source of a coronal mass ejection on the weekend. AR2939 and AR2940, which are emerging from the farside of the Sun are crackling with solar flares, albeit so far only small ones. A very active region currently on the farside of the Sun will rotate into view later this week.

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!