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Archives for December 2017

Orion, Above the Belt

December 29, 2017 by Brian Ventrudo Filed Under: Deep Sky

NGC 2175, the Monkey Head Nebula. Credit: Paul Hutchinson via Flickr.

Orion is perhaps the most famous of the 88 constellations in the night sky, and it’s likely the easiest to find for stargazers all over the world.  And unlike most constellations, Orion looks like its legendary namesake: a mighty hunter with a shield, a raised arm, and a sword hanging from his star-jeweled belt. The constellation harbors some dazzling sights including what may be the most beautiful object in the night sky for a small telescope, the famous Orion Nebula, a bright blister in the nearest star-forming region to our solar system. In this little tour, we’ll have a look at some lesser-known sights in the constellation Orion north of the three bright stars of Orion’s Belt [Read more…] about Orion, Above the Belt

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Filed Under: Deep Sky constellation, orion, sky tour

Snapshot of the Sword of Orion

December 21, 2017 by Brian Ventrudo Filed Under: Astronomy Images and Video

The Sword of Orion and the Orion Nebula (M42) through a DSLR camera at 200mm, f/4, 2 seconds, ISO6400.

Never let a clear sky go to waste! After a quick look with binoculars at the Orion Nebula and the other features in and around the Sword of Orion, I tried to capture the same view with a quick snapshot through a DSLR. This view shows the Sword region framed against tree limbs over Washington, D.C.

Taken with an unmodified Nikon D750 with Nikkor 70-200 mm f/4 lens at 200 mm, 2 seconds, ISO6400.

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Filed Under: Astronomy Images and Video nebula, nightscape, orion

How to Look Through a Telescope

December 21, 2017 by Brian Ventrudo Filed Under: Astronomy for Beginners

The art of looking through a telescope. Image credit: Brian Ventrudo

Newcomers to astronomy and casual stargazers are sometimes disappointed by their first glimpses through a telescope, especially when looking at deep-sky sights like star clusters, galaxy, and nebulae. They look through the eyepiece, see a dim smudge without much detail or any color, and conclude that one dim smudge looks like all the others. Some become disillusioned, wonder what all the fuss is about, and take up bird watching instead.

Like most activities, however, looking through a telescope takes a little skill and practice. But once you get the hang of it, you can learn to see an astonishing amount of subtle detail, even in a small telescope. The image of a distant galaxy or star cluster in your telescope will never rival the pro-quality photographs you see in books and magazines. But with a little practice, you’ll learn to observe subtle detail and structure in faint objects that even the best cameras will never capture. Here are a few tips to help you get the best view of ‘faint fuzzies’ through a telescope… [Read more…] about How to Look Through a Telescope

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Filed Under: Astronomy for Beginners beginners, telescopes

How to See – Averted Vision and Dark Adaptation

December 20, 2017 by Brian Ventrudo Filed Under: Astronomy for Beginners

The structure of the retina showing rods, cones, and nerve cells. Credit: OpenStax College/Wikipedia.

You can spend thousands of dollars on a big, advanced telescope, hundreds more on the best eyepieces money can buy, and still not see much of anything at all. Unless,  that is, you know you to extract maximum light and detail with your eye. There are two concepts every stargazer should know to get the best visual views: averted vision and dark adaptation. Here’s how it all works… [Read more…] about How to See – Averted Vision and Dark Adaptation

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Filed Under: Astronomy for Beginners beginners, dark adaptation, night vision

The 2018 ‘Year in Space’ Calendars Now Available

December 4, 2017 by Brian Ventrudo Filed Under: Stargazing

In 1991, stargazer Steve Cariddi walked into a Boston bookstore and noticed most desk calendars were about cats, or puppies, or sailboats. There was not a single astronomy calendar in sight. So he decided to create his own, and in late 1993 he published his first “astronomy and space” desk calendar. He’s been publishing these calendars every year since. And now he’s released the large-format ‘Year in Space’ wall calendar for 2018 [Read more…] about The 2018 ‘Year in Space’ Calendars Now Available

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Filed Under: Stargazing space calendar

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