5581–5600 of 6,731 results

Equipment: Guides & Recommendations

Optimized for Astrophotography: Tele Vue “IS” Astrographs

Among the most highly rated apochromatic telescopes we’ve ever tested, the Tele Vue Nagler-Petzval line has been reengineered for astrophotography.

Equipment: Guides & Recommendations

When Old is New: Pentax 100 SDUF II

Pentax has long been a source of quality telescopes and astrophotography equipment for Japanese amateurs. Now, thanks to the efforts of the folks at Oceanside Photo & Telescope (a.k.a. OPT), the Pentax line is coming to America.

Equipment: Guides & Recommendations

Laid-Back Observing: Bigha StarSeeker

Even a quick glance tells you what the Bigha StarSeeker is all about. What it won’t tell you, however, is how well this motorized chair for binocular observing is engineered.

Astronomy & Observing News

Dorrit Hoffleit, 1907-2007

A world-renowned expert on variable stars, astrometry, and the history of astronomy — and a prolific contributor to Sky & Telescope — has passed away at age 100.

Equipment: Guides & Recommendations

Portable Pier Lift

Pier-Tech now produces a heavy-duty portable telescope pier that’s perfect for star parties and observatories alike.

Equipment: Guides & Recommendations

SBIG for Macs

Now Macintosh users can fully utilize CCD cameras from Santa Barbara Instrument Group.

Astronomy & Observing News

April's Stargazing Celebrations

This week amateur astronomers across the U.S. and around the world will host events designed to involve the public in appreciating the night sky.

Astronomy & Observing News

Earth's "Other Moon"

Last year Earth's gravity apparently captured a tiny asteroid that ventured too near our planet. But this "second Moon" will only hang around until June, when it'll get shoved back out into interplanetary space.

Astronomy & Observing News

Astro Image in the News:
The Red Square Nebula

New observations using giant telescopes and state-of-the-art cameras have revealed a star in the constellation Serpens that's throwing out matter in a startlingly symmetrical shape.

Resources and Education

A Bright Naked-Eye Asteroid Occultation

On Tuesday evening, April 17, 2007, observers in Georgia and Florida will get a chance to watch asteroid 411 Xanthe cover the 4.2-magnitude star Iota Cancri.

New Product Showcase

Hot New Products for 2007

One of the most popular features we publish in Sky & Telescope is our annual Hot Products roundup, in which we call special attention to noteworthy astronomy products introduced into the marketplace during the past year.

Astronomy & Observing News

Jupiter's Tumultuous Changes

Cloud patterns on Jupiter are undergoing a major upheaval. Have a look with your telescope before dawn.

Astronomy & Observing News

Utah Park Earns "Dark Sky" Status

Southeastern Utah's Natural Bridges National Monument has long been known for its breathtakingly dark nighttime skies. And now that reputation — along with some improved park lighting — has earned Natural Bridges recognition as the world's first International Dark-Sky Park.

Astronomy & Observing News

Porter Garden Telescope Changes Hands

At the Boston auction house of Skinner, Inc., one of the most coveted of telescope collectibles recently went on the block. Barely more than a dozen of these elegant bronze garden ornaments from the 1920s are known to exist today.

Resources and Education

Call for Observations of X-ray Binaries and CVs

From late April through mid-May 2007, professionals are seeking amateur observations of four X-ray binaries and a cataclysmic variable star.

Astronomy & Observing News

South Pole Telescope Readied for Operation

On February 16th, at the bottom of the world, engineers pointed a brand-new telescope toward Jupiter, cooled its detectors to an unfathomable ¼° above absolute zero, and collected "first light."

Astronomy & Observing News

Seeking the Origins of Cosmic Rays

Where do cosmic rays come from? Although they were first identified on a balloon flight in 1912, their sources have been hard to find. But recently a slight, unexplained excess of cosmic rays — only 0.1% above the sky average — was identified coming from the direction of Cygnus.

Resources and Education

New Manual for Occultation Observers

The International Occultation Timing Association (IOTA) announced on April 3, 2007, the release of a free e-book, Chasing the Shadow: The IOTA Occultation Observer's Manual.

Astronomy & Observing News

This Rock Really Rolls Along

Despite a nearly full Moon, backyard astronomers around the world turned their telescopes skyward this past weekend to track down asteroid 2006 VV2.

Resources and Education

New Disturbance in Jupiter's North Temperate Belt

On March 29, 2007, two new white spots appeared on Jupiter. Keep watch as they develop over the coming weeks.