View this post on Instagram   A post shared by Andrew McCarthy (@cosmic_background) Astrophotographer Andrew McCarthy is known for his ultra-high-definition photos of the Sun, and now he’s focusing his equipment on an interesting detail of our star. AR3697 is a massive sunspot that has gotten a lot of attention lately, as it’s the … Continue reading Astrophotographer Captures Incredible Sunspot Close-Ups From His Backyard