Author Archives: Sean Walker

About Sean Walker

Sean Walker, S&T's Equipment Editor, joined the staff of Sky Publishing in 2000 and specializes in astrophotography, solar system observing, and astronomy gear.

The blank Sun seen on January 12 by NASA's Solar Dynamics Observatory. SDO/HMI

The Spotless Sun

The Sun has been unusually quiet lately. Since the start of 2017, only a single tiny sunspot has made a brief appearance on the solar disk.

Dennis di Cicco at the scope

Former S&T Editor Wins Award

The North East Region of the Astronomical League (NERAL) announces the presentation of the prestigious 2015 NERAL Walter Scott Houston award to former Sky & Telescope editor Dennis di Cicco.

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Hawai’i Nights

See Hawai'i by starlight through the lens of premier astrophotographer Rogelio Bernal Andreo. His first book, Hawai‘i Nights, documents his island adventure.

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Thousand Year Canon of Eclipses: 1501 to 2500

Thousand Year Canon of Solar Eclipses: 1501 to 2500 is a comprehensive catalog of essential characteristics of each of the 2,389 solar eclipses occurring throughout this 10-century period, and Thousand Year Canon of Lunar Eclipses: 1501 to 2500 documents 2,424 lunar eclipses in the same time frame.

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NGC-MAX Positioning Kit

Now you can have all the Messier, NGC, and IC catalog objects available at the push of a button for your dual-mounted telescopes - Jim's Mobile Incorporated now offers encoders and hardware to mate its popular NGC-MAX positioning computer to the Explore Scientific Twilight II alt-az telescope mount (a complete kit with NGC-MAX computer sells…