Sky & Telescope - April 2020 - Cover1

REVOLUTION:

OBSERVING CHALLENGE:

WORKBENCH:

Liquid Mirror Telescope

M87's Jet

Build a Carbon-Fiber Tube

PAGE 24

PAGE 30

PAGE 72

THE ESSENTIAL GUIDE TO ASTRONOMY
APRIL 2020

PHOTO ESSAY

Hubble
Celebrates
Years
Page 14

Breathing
New Life into
an Old Dob
Page 36

Venus
Visits the
Pleiades
Page 48

Refractor
Rivalry in
the 1660s
Page 58

skyandtelescope.org



http://www.skyandtelescope.org

Sky & Telescope - April 2020

Table of Contents for the Digital Edition of Sky & Telescope - April 2020

Contents
Sky & Telescope - April 2020 - Cover1
Sky & Telescope - April 2020 - Cover2
Sky & Telescope - April 2020 - 1
Sky & Telescope - April 2020 - Contents
Sky & Telescope - April 2020 - 3
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