Sky & Telescope September 2012

FEATURED ARTICLES

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New Meteor Showers Discovered
As Earth circles the Sun, it crosses a rich, changing tangle of meteoroid streams. Help us map them with amateur video.
By Peter Jenniskens

Nature's Wrath
The solar system's wild weather can make Earth's extremes seem serene.
By David Baker & Todd Ratcliff

Protoplanet Close-up
Dawn is revealing the history of Vesta, a unique world that is part asteroid and part planet.
By Jim Bell

Finding the Limit for Uneven Double Stars
Your observations can contribute to this important project.
By Sissy Haas

Easy Reflector Collimation
Achieving precise optical alignment is neither difficult nor time-consuming — provided you stay on course.
By Gary Seronik

BEYOND THE PRINTED PAGE

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Meteor Shower Maps
Access the full set of 15 maps covering newly discovered meteor showers throughout the year.
By Alan MacRobert

Extreme Weather in the Solar System
Watch roving Martian dust devils and hear lightning on Saturn.
By Camille Carlisle

Vesta Close-Up
Zoom in on incredible detail on the surface of Vesta, the second-largest asteroid in the solar system.
By Robert Naeye

September Occultations
Find out more about four unusual occultations coming up in September.
By Alan MacRobert

Lunar Librations
Librations and other lunar data for Sept 2012
By The Editors of Sky & Telescope

ALSO IN THIS ISSUE

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Planets Fly Low at Dusk and High at Dawn
Venus and Jupiter dominate the predawn sky.
By Fred Schaaf

S&T Test Report
The 60Da: Canon's Astrophoto DSLR
By Alan Dyer

Guide Me, Cygnus
The area around Deneb and Gamma Cygni is amazingly rich.
By Sue French

Table of Contents
See what else September's issue has to offer.