Recent Astronomy Articles at Cosmic Pursuits

A Video Retrospective of an Extraordinary Solar Eclipse

August 17, 2018 by Brian Ventrudo Filed Under: Celestial Events

It was the most watched event in astronomical history, and it called forth awe from hardened scientists, barstool astronomers, and small children alike. It was the Great American Eclipse of August 21, 2017. It was a much-hyped and all-to-fleeting event, and like you, I wish I could see it again. We can’t, of course, but we can enjoy the video and images of expert astrophotographers who spent much time and effort documenting this extraordinary eclipse. Here are a few of my favorite videos below… [Read more…] about A Video Retrospective of an Extraordinary Solar Eclipse

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The Tears of St. Lawrence

August 10, 2018 by Brian Ventrudo Filed Under: Celestial Events

Perseid meteors appear to emanate from a point (called a radiant) in the northern constellation Perseus. The peak of the meteor shower occurs on or about August 12 each year. Image credit: NASA.

It’s the best celestial show of the northern summer months, one that can be enjoyed without a telescope, camera, or much expertise in celestial matters at all. It’s the Perseid meteor shower, an annual event in which sand-sized bits of an ancient comet streak through the Earth’s upper atmosphere and elicit “oohs and ahhs” from experienced and untutored stargazers alike. [Read more…] about The Tears of St. Lawrence

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A Requiem for Yerkes Observatory

August 3, 2018 by Brian Ventrudo Filed Under: History and Famous Astronomers

Yerkes-Observatory-BW-1 — The main dome that houses the 40″ refractor at Yerkes Observatory in Williams Bay, WI.

“All things lovely will have an ending”, wrote author Conrad Aiken, and the end is coming soon for the venerable Yerkes Observatory on Lake Geneva in the pleasant resort village of Williams Bay, Wisconsin. The University of Chicago, which operates the observatory, announced earlier this year that Yerkes will close on October 1, 2018, and all public tours and scientific and educational activities will cease after more than 120 years of operations [Read more…] about A Requiem for Yerkes Observatory

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Mars Meditations

July 31, 2018 by Joe Bergeron Filed Under: Solar System

A composite image of Mars from the Viking Orbiter (image credit: NASA)

The planet Mars is coy. It spends most of its time as a relatively inconspicuous star-like object, only moderately bright, drifting barely noticed though the sky, little seen, or sometimes hiding behind the Sun.

Once every two years it grows bolder. It decides to put on a show. But even then, it’s sneaky about it, gathering its glory in the late hours of the night, seen mainly by dedicated astronomers, those who know what to expect and where to look.

And then, at the apex of its splendor, it rises at sunset, blazing across the sky all night for a few brief weeks, revealing itself in a level of detail far beyond what it will normally display [Read more…] about Mars Meditations

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The Basics of Electronically-Assisted Astronomy

July 27, 2018 by Brian Ventrudo Filed Under: Astronomy Equipment

The Lagoon Nebula (M8) images with a Mallincam Extreme video camera with a Meade 8” LX10, focal reducer, and light-pollution filter. Credit: Jim Thompson.

Electronically-assisted astronomy (EAA) is a relatively new and often misunderstood pastime, one that lies somewhere in the continuum between strictly visual observing and hard-core astrophotography. Simply put, EAA allows you to see what would otherwise not be possible to see using an eyepiece alone. It’s an ideal way to complement purely visual observing, and it’s perfect for stargazers who don’t have the visual acuity or patience to look through an eyepiece [Read more…] about The Basics of Electronically-Assisted Astronomy

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