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.


Takahashi Epsilon 130D Astrograph

Texas Nautical Repair 1925A Richmond Ave. Houston, TX 77098 713-529-3551; Takahashi has updated and reintroduced its smallest Epsilon series telescope, the ε-130D Hyperbolic Astrograph ($2,995). This 5-inch f/3.3 optical system features a hyperbolic primary mirror mated with a digital corrector to record pinpoint stars across a large 44-mm image circle. With a newly...


Cosmos Telescopes

Celestron 2835 Columbia St., Torrance, CA 90503 310-328-956 ; Celestron introduced its new COSMOS Series of binoculars, microscopes, and telescopes at the 2014 Consumer Electronics Show in Las Vegas. Of particular note is the COSMOS 90GT WiFi Telescope ($399.95, pictured at left), a Go To refractor completely controlled using the free COSMOS Celestron...