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A rarely imaged target as it is very dim. This image took me over 50h of total exposure time. Total exposure time: 52h 40' Image resolution: 4,490 × 4,552px (0.96″/px) Shot from my driveway near Tucson, AZ in late 2023 Telescope: William Optics RedCat
Next to the Orion Nebula, the Rosette Nebula is definitely a must-do on the list of every aspiring astrophotographer. Located not too far from Orion in Monoceros, this large H II region has spectacular features, centered around a star cluster. Click or tap to enlarge/double-tap to zoom My image
A spectacular emission Nebula, the Heart Nebula is one of the classics of Northern Hemisphere amateury astronomy. In the gallery below, I've highlighted 3 very different areas of the image: Left: Planetary Nebula WeBo-1 Middle: Melotte 15 in the... heart of the Heart Nebula Right: The “Fish
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How a rogue Wikipedia editor credited Muslims with... everything
I am teaching a fun, 6-week, non-credit course on the search for intelligent life among the stars, offered (by zoom or in person) through the San Francisco State University Osher Lifelong Learning Institute, starting Sept. 30. It’s part of a program of courses for retired people, so if you are younger, perhaps you can pass […] The post A Course on Aliens in Science & Science Fiction for People Over 50 appeared first on Andrew Fraknoi - Astronomy Lectures - Astronomy Education Resources.
How do you tell friend from foe in a split second? These beautifully designed WWII guides used silhouettes and vehicle details into a system for recognizing tanks, planes, and ships on sight.
Regular readers may recall that I put a visit to Tulainyo Lake on my bucket list a few years ago. Last week I did it. Impossibly remote, otherworldly beauty, and an enduring mystery. Just how deep was this lake? Wikipedia claims not to know. Measuring it is non-trivial. A worthy challenge. The skinny: This relatively small alpine lake is about 117 m deep! That makes it the 25th deepest natural lake in North America, and by far the deepest lake on Earth for its size. Enjoy our interactive report here.
