Sky & Telescope July 2011



Sketching M51
For seeing all that's in the eyepiece, nothing beats sketching.
By Howard Banich

Where the Hot Stuff Is
Volcanism takes a variety of forms on other worlds.
By Rosaly Lopes

Neptune Comes Full Circle
Neptune's discovery is one of the greatest stories in astronomy lore.
By C. Renée James & William Sheehan

Building Mosaics in PixInsight
Stitching together seamless mosaics is easy with this multi-platform software.
By Rogelio Bernal Andreo



Ring Spokes Return
Observers have seen elusive details in Saturn's B ring for more than a century. Watch this animation of Hubble photos to see what they look like.
By William Sheehan

Interview with Rosaly Lopes
S&T's editor-in-chief interviews the author of our story about exovolcanoes.
By Robert Naeye

Map Tutorial
Watch Alan show how to use S&T's all-sky charts and planispheres.
By Alan MacRobert

Lunar Librations
Librations and other lunar data for July 2011
By The Editors of Sky & Telescope



iOptron's New 6-inch Mak & German Equatorial Mount
These recent additions to the iOptron family of telescopes are aimed at serious observers and astrophotographers.
By Dennis di Cicco

Double Stars of Summer
The summer sky has an abundance of double and multiple stars.
By James Mullaney

See Pluto in 2011
However you classify this faint flicker, spotting it is a real accomplishment.
By Tony Flanders

Secondary Considerations
Aligning a Newtonian's diagonal mirror isn't as difficult as many think.
By Gary Seronik

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