Astronomy April 2003

Big eye on the universe
The finest telescopes on Earth sit atop Mauna Kea, the highest peak in Hawaii. Take a virtual tour up the mountain to get a behind-the-scenes look at the observatories. — Bob Berman

The turbulent world of compact galaxy groups
Like desert oases, compact galaxy groups spring up in barren voids. Find out what these fast-moving, tight-knit systems reveal about the nature and evolution of cosmic structure.
— Marcia Bartusiak

Searching for the golden ratio
Weaving itself through geometry, relativity, botany, and astronomy, the golden ratio phi is one of those special numbers that gives shape to our universe. — Mario Livio

Centaurus and Antlia
The large constellation Centaurus the Centaur holds an abundance of celestial treats from the galaxy and beyond. The smaller Antlia the Air Pump is somewhat star-starved but contains some extragalactic appetizers.
— Tom Polakis

Spot a naked-eye asteroid
While the asteroid Vesta normally remains dim, this month it is a naked-eye object — if you know where to look. With these tips, it’s a challenge any backyard observer can meet.
— Richard Talcott

Darkness Down Under
Tens of thousands of observers flew halfway around the world last December to catch half a minute of totality. — Richard Talcott

All-in-one filter system
Sirius Optics’ VFS-1.25 provides color highlights in a single unit rather than numerous filters required for observing sessions.
— Phil Harrington

The Paramount GT-1100 ME
No more tangled cables. The new Paramount GT-1100 ME offers observers elegance in design, accuracy in automation, and an extended arsenal of cable pass-thrus as well as a new cable conduit. — Gregory Terrance

Two eyes on the sky
Two eyes are always better than one, especially when they are partnered with giant binoculars. In this review of several giants, we help you find the binoculars that best fit your needs and your budget. — Phil Harrington