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.

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.


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.


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.


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...


TheSky App

Software Bisque Inc. 862 Brickyard Circle, Golden, CO 80403-8058 303-278-4478; Software Bisque announces its long-anticipated expansion into the app market with the release of TheSky Mobile ($14.99) for the iPhone and TheSky HD for the iPad ($29.99). Both include an extensive feature set tailored to the intermediate and advanced amateur. TheSky for iOS...

HR coma corrector

HR Coma Corrector

Explore Scientific 621 Madison Street, Springdale, AR 72762 866-252-3811; Explore Scientific unveils its new HR Coma Corrector ($299.99) for visual and photographic use. This 2-inch unit inserts into your Newtonian telescope’s focuser in front of the eyepiece or camera, correcting distorted stars near the edge of the field due to coma and field...