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.

HR coma corrector

HR Coma Corrector

Explore Scientific 621 Madison Street, Springdale, AR 72762 866-252-3811; www.explorescientific.com 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 curvature.…

Takahashi_e130

Takahashi Epsilon 130D Astrograph

Texas Nautical Repair 1925A Richmond Ave. Houston, TX 77098 713-529-3551; www.takahashiamerica.com 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 redesigned…

Celstron_cosmos

Cosmos Telescopes

Celestron 2835 Columbia St., Torrance, CA 90503 310-328-956 ; www.celestron.com 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 Navigator…