Sky and Telescope - March 2016 - 2

March 2016
The Great Red Spot
has noticeably
shrunk and changed
color since Voyager 1
took this image
in 1979.
PHOTO: NASA,
PROCESSED BY
BJÖRN JÓNSSON

F E AT U R E S

18

The Not-So-Great Red Spot
After shrinking in size for decades,
is Jupiter's iconic Great Red Spot facing
an identity crisis? By Amy A. Simon

COVER
STORY

22

Telescope Operators
These men and women are the experts
that make discoveries at big professional
observatories possible.
By Katherine Kornei

28

The Spiral Arms of Spring
Embrace the wonders of these grand
design galaxies. By Alan Whitman

34

Lowell's Great
Refractor Made New
At age 119, Lowell Observatory's
legendary "Mars telescope" is reborn.
By Klaus Brasch & Ralph Nye

66

Electronic Eyes
Increase your telescope's reach with
an astrovideo camera.
By Curtis Vincent Macchioni

O B S E RV I N G M A R C H

41 In This Section
42 March's Sky at a Glance
43 Binocular Highlight
By Gary Seronik

44 Planetary Almanac
45 Northern Hemisphere's Sky
By Fred Schaaf

46 Sun, Moon & Planets
By Fred Schaaf

48 Celestial Calendar
By Alan MacRobert

52 Exploring the Solar System
By Tom Fleming

54 Deep-Sky Wonders

NASA / ESA / HUBBLE HERITAGE TEAM (STSCI / AURA)

On the cover:

VOL. 131, NO. 3

28

By Sue French

57 Going Deep
By Ted Forte
S &T T E S T R E P O R T

60 Sky-Watcher's
Fast Astrograph
By Alan Dyer
ALSO IN THIS ISSUE

4 Spectrum
By Peter Tyson

6 Letters
8 75, 50 & 25 Years Ago
By Roger W. Sinnott

10 News Notes

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GEMINI OBSERVATORY

16 Cosmic Relief
By David Grinspoon

22
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2

March 2016 sky & telescope

38 New Product Showcase
64 Telescope Workshop
By Gary Seronik

73 Gallery
84 Focal Point
By William Sheehan

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Sky and Telescope - March 2016

Table of Contents for the Digital Edition of Sky and Telescope - March 2016

Contents
Sky and Telescope - March 2016 - Cover1
Sky and Telescope - March 2016 - Cover2
Sky and Telescope - March 2016 - 1
Sky and Telescope - March 2016 - Contents
Sky and Telescope - March 2016 - 3
Sky and Telescope - March 2016 - A
Sky and Telescope - March 2016 - B
Sky and Telescope - March 2016 - 4
Sky and Telescope - March 2016 - 5
Sky and Telescope - March 2016 - 6
Sky and Telescope - March 2016 - 7
Sky and Telescope - March 2016 - 8
Sky and Telescope - March 2016 - 9
Sky and Telescope - March 2016 - 10
Sky and Telescope - March 2016 - 11
Sky and Telescope - March 2016 - 12
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Sky and Telescope - March 2016 - 16
Sky and Telescope - March 2016 - 17
Sky and Telescope - March 2016 - 18
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Sky and Telescope - March 2016 - 28
Sky and Telescope - March 2016 - 29
Sky and Telescope - March 2016 - 30
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Sky and Telescope - March 2016 - 40
Sky and Telescope - March 2016 - 41
Sky and Telescope - March 2016 - 42
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Sky and Telescope - March 2016 - 46
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Sky and Telescope - March 2016 - Cover3
Sky and Telescope - March 2016 - Cover4
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