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4 March 2014 sky & telescope

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ESA / NASA / G. TINETTI

(UNIVERSITY COLLEGE

LONDON, UK & ESA) AND

M. KORNMESSER (ESA/HUBBLE)

On the cover:

Armchair astron-

omers can now

help fi nd Jupiter-

size exoplanets,

akin to the one

illustrated here.

March 2014 VOL. 127, NO. 3

MONTHLY SKY PODCAST

Listen as we guide you through

this month’s celestial sights.

SkyandTelescope.com/podcasts

EBOOK LIBRARY

Enjoy our growing collection of

eBooks, on subjects from Saturn

to meteor showers.

SkyandTelescope.com/eBook

S&T WEEKLY NEWSLETTER

Sign up to receive a free e-mail

roundup of the week’s news.

SkyandTelescope.com/newsletters

TIPS FOR BEGINNERS

New to astronomy? Here’s every-

thing you need to jump right into

the fun.

SkyandTelescope.com/letsgo

OBSERVING MARCH

43 March’s Sky at a Glance

44 Binocular Highlight

By Gary Seronik

45 In This Section

46 Planetary Almanac

47 Northern Hemisphere’s Sky

By Fred Schaaf

48 Sun, Moon & Planets

By Fred Schaaf

50 Celestial Calendar

By Alan MacRobert

54 Exploring the Solar System

By Sean Walker

56 Deep-Sky Wonders

By Sue French

S&T TEST REPORT

60 S&T Test Report

By Dennis di Cicco

ALSO IN THIS ISSUE

6 Spectrum

By Robert Naeye

8 Letters

9 75, 50 & 25 Years Ago

By Roger W. Sinnott

10 News Notes

64 New Product Showcase

66 Telescope Workshop

By Gary Seronik

72 Gallery

82 Focal Point

By Nick Howes

FEATURES

18 How You Can Find

An Exoplanet

Using the Planet Hunters website,

citizen scientists are adding to

Kepler’s treasure trove of new

worlds. You only need a computer,

an internet connection, and

enthusiasm. By Meg Schwamb

24 How to Build

a Giant Telescope

Construction of the world’s largest

ground-based optical telescope takes

astronomical engineering to the

next level. By Robert Zimmerman

(^30) Asteroid to Occult Regulus
over New York
Millions of viewers can see one of
the brightest stars in the sky black
out when an asteroid crosses in front
of it. By Steve Preston
34 New Jersey Quasar Quest
Observing these exotic objects is
easier than most people think.
By Bob Cava
39 New Mercury Map
68 The Origin of Stacking
Modern astroimagers owe a debt
to the pioneers at Lowell Observatory.
By Klaus Brasch
COVER
STORY
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SKY
WEEK
JOHANNES HEVELIUS
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