David Eicher
Editor-in-Chief at Astronomy Magazine
Editor-in-Chief of Astronomy magazine, author of 26 books on science and history, drummer, Green Bay Packer fan, Starmus Festival, Asteroid Day, fun.
Articles
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1 week ago |
astronomy.com | David Eicher
The world is overflowing with crazily-named deep-sky objects. However, I am guilty of one such naming, many years ago, in Astronomy and Deep Sky magazines — the Owl Cluster, NGC 457, in Cassiopeia. This object was discovered by William Herschel on August 18, 1780. When I first looked at this cluster with my Celestron 8, I immediately saw what seemed to be two prominent “eyes” and what appeared to be a distinct body of stars, with feet, and “wings” of bright stars.
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1 week ago |
astronomy.com | David Eicher
As we’ve seen in recent posts, the northern constellation Cassiopeia is chock-full of intriguing nebulae and bright star clusters. A large and relatively bright emission nebula among this group, Sharpless 2–157, is rarely observed by amateur astronomers. It is sometimes called the Lobster Claw Nebula due to its distinctive shape. This big nebula lies in relatively close proximity to the well-known and frequently observed Bubble Nebula (NGC 7635).
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1 week ago |
astronomy.com | David Eicher
The far northern sky holds its richest region in Cassiopeia, a splendid area of bright Milky Way stars and gas. One of the greatest nebulae in the far north is NGC 7635, the Bubble Nebula, so named for its remarkable spherical bubble visible in images. This object is an emission nebula with a reasonably high surface brightness, making it visible in moderate-sized scopes under a dark sky. The Bubble glows at about 10th magnitude and spans 15’ by 8’. It lies 8,000 light-years away.
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1 week ago |
astronomy.com | David Eicher
Skip to content In this episode, Astronomy magazine Editor Dave Eicher invites you to head out a bit later in the evening this time of year to see the Milky Way. Be sure to go out before the Moon comes up.
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2 weeks ago |
astronomy.com | David Eicher
In the world of deep-sky observing, we think of major classes of objects: star clusters, nebulae, and galaxies. But once in a while an exception to this classification arises as a favorite object for observers. Back in 1980, the great Walter Scott Houston wrote one of his celebrated columns in Sky & Telescope and addressed an intriguing line of stars in Camelopardalis. He named the feature Kemble’s Cascade, after Canadian observer Lucian Kemble, who observed this line of stars and reported on it.
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The Mary Surratt Boarding House on H Street in Washington, built in 1843 and the site of meetings of the Lincoln conspirators, who here planned to kidnap and then to kill Abraham Lincoln. It’s now a “Wok and Roll” restaurant. https://t.co/ShGQMaThfd
Abraham Lincoln died in this room in the Petersen House on April 15, 1865. https://t.co/006JSI2pRL
Among the many artifacts of an assassination on display at Ford’s Theatre is the presidential box door that John Wilkes Booth bored a peephole in, and the wooden brace (bottom) he used to jam the door to the hallway leading to the box, delaying anyone who could follow him. https://t.co/TGGtd2ZCqM