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How AI Enhanced My Imaging of the Jellyfish Nebula
Sh2-248 is the Jellyfish Nebula, a supernova remnant in Gemini. Visually it’s a lacy web of shock-heated filaments: strong Hα arcs and lots of O III structure that can give it that teal/blue “glow” in narrowband. It sits near the bright star η Geminorum (Propus), and spans roughly ~45–50 arcminutes (bigger than the full Moon).…
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Exploring Globular Clusters: Stellar Fossils of the Universe
The progression from Spring to Summer comes with it the appearance of many globular clusters in the night sky like Messier 53. It was discovered by Johann Elert Bode in 1775 and catalogued by Charles Messier in 1777. Globular clusters are ancient, among the oldest structures in the universe. Most are estimated to have formed…
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Understanding NGC 3226/3227: A Stellar Dance of Galaxies
Today’s image is a pair of interacting galaxies, NGC 3226 and NGC 3227, also known as APR 94. NGC 3227, the large central spiral is an SAB(s)a, while its companion, NGC 3226 is an E2 elliptical. There is also a string of galaxies to the right of the frame. The brightest one is NGC 3222. …
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Today’s Sun and Its Spots
A capture and stack of 500 frames of the sun today. There are two major groupings of spots. I like how the grouping in the upper right has three distinct levels or shades of penumbra. This is less noticeable in the group in the lower right image. Also noticeable in the images is the sunspots…
Astro-Shed 