3/1999, Watching Stars Evolve

At the Hearts of Barred Galaxies
Seemingly immutable, barred spirals may merely be fleeting stages in the dynamic lives of galaxies.
By Pierre Martin and Daniel Friedli
Eyewitness to Stellar Evolution COVER STORY
Most stars age gradually, taking millions or billions of years to Show permanent change. But a few have been caught in the midst of life crises.
By James B. Kaler
Awaiting the Storm
A meteor shower or a meteor storm: what's in store for this November's Leonids?
By Joe Rao
Once in a Blue Moon
From the Middle Ages to the game of Trivial Pursuit, a folklorist explores the meanings of "blue Moon."
By Philip Hiscock
High-Tech Newtonian Collimation Tool
Projecting a reticle display along with its central beam, this laser collimator offers unique advantages over the competition. S&T Test Report By Alan French
Sentinel of the Sky
Armed with a modest telescope and CCD camera, Tucson amateur Roy A. Tucker joins the ranks of professional astronomers who have discovered near-Earth objects. Amateur Astronomers 1 By Edwin L. Aguirre
) Quintets, Sextets, and Septets: Exploring Hickson Compact Groups
Dive Jeep into the spring sky to vier distant galaxy clusters from your backyard.
Observer's Log By Steve Gottlieb
0 Woodshop Telescopes
if you think you need a complete machine Shop to make good-looking telescopes. think again.
TelescopeTechfliqUeS Bv Chuck Hards
9 Warming Up to Digital Imaging
A long-time amateur astronomer finds more ways than one to warm up to today's electronic picture-taking.
Astro Imaging By James Hannon
87 Rambling Through the Skies
Canopus's bong legacy of nautical and celestial navigation By E. C. Krupp
90 Sky & Telescope's Guide to the Sky
Welcoming the Stars of Spring • Northern Hemisphere S Map • Binocular Highlight: Three Shields of Orion • Sun, Moon, and Planets • Southern Hemisphere Sky Map
100 Hunting for Equilateral Triple Stars
How to find a dozen eye-catching triangles in the skr. By Roger W. Sinnott
106 SkyWise
By Jay Ryan
 

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