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Description A good Focal Extender adds some real versatility to your telescope accessory line-up. First of all, it allows you to increase the magn...

Description A good Focal Extender adds some real versatility to your telescope accessory line-up. First of all, it allows you to increase the magn...

Description A good Focal Extender adds some real versatility to your telescope accessory line-up. First of all, it allows you to increase the magn...

Description The Explore Scientific 2X Focal Extender (2.0-inch O.D.), accepts both 1.25-inch O.D. and 2.0-inch O.D. format eyepieces and camera ad...

Description The Explore Scientific 3X Focal Extender (2.0-inch O.D.), accepts both 1.25-inch O.D. and 2.0-inch O.D. format eyepieces and camera ad...

Features Huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay a...

Features Huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay a...

Description The ED80 Essential Series Air-Spaced Triplet Refractor is a true apochromatic telescope that reveals celestial wonders like the desola...

Description Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep s...

Description The Original Classic Explore Scientific ED127 Air-Spaced Triplet, Retooled for the Astrophotographer:  New precision front cell wit...

Description Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep s...

Description Reveal celestial wonders like the desolate beauty of the lunar terrain, the serene structure of Saturn’s rings or the brightest deep s...

Features This is a field flattener for refractor-type telescopes with a focal ratio of f/5 to f/7 Causes no change to the telescope focal length ...

Features Huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay a...

Features Huge apparent field of view not only gave the observer a panoramic visual experience, but they relax the eye so the observer could pay a...

Description The Explore Scientific AR127 Air-Spaced Doublet is a classic air-spaced, crown-and-flint, doublet achromatic refractor, reborn with th...

Description The Explore Scientific AR152 Air-Spaced Doublet, is a classic air-spaced, crown-and-flint doublet achromatic refractor, and at 152mm (...

Note: This item is sold as-is -- without warranty. All sales are final. Quantities are limited. Price includes shipping to the 48 contiguous United...