Products

Our 3D printed EvoGuide 50 Clamshell is designed to make it easy to mount the SkyWatcher EvoGuide 50 refractor and a guidescope for wide-field imag...

This 3D printed bracket and mounting ring features a clamshell to hold the EvoGuide 50 OTA, plus a ZWO EAF autofocus motor and accessories such as ...

50 mm apochromatic refractor with matched lens assembly with one ED element 242 mm focal length (f/4.8) 1.25” Helical focuser Finder stalk Vixen-s...

Focus mask for Sky-Watcher Evoguide 50 APO Refractor.

Sky-Watcher Evostar EDX refractors provide the finest images obtainable in their design class. These doublet refractors deliver dramatic, coal-blac...

Sky-Watcher Evostar EDX refractors provide the finest images obtainable in their design class. These doublet refractors deliver dramatic, coal-bla...

Extra 1.75 lb Counterweight for 1/2 x 13tpi threaded rod. Powder coated for added durability. 4″ Round, .5″ thick, Wt 1.75lbs.

Have you ever wished on a shooting star? Shooting stars often appear when the earth passes through the dust and debris left by a passing comet. Exp...

Imagine a world without light. What would it be like? Dark, cold, and lifeless! In Explore Light and Optics! With 25 Great Projects, readers ages 7...

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

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

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

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

The Explore Scientific 9mm 120° Series eyepiece really is in a class by itself. The 120° apparent field of view is unlike anything you have experie...

Explore Ultra-Wide Eyepieces - Comfort, Quality, Value. The Explore Scientific 92° Series™ eyepieces are hyper-wide class oculars that can transfor...

Nitrogen-Purged and Waterproof: Internally sealed and purged with inert, dry nitrogen gas to prevent internal fogging, to halt the intrusion of fin...

Using advanced computer design, combinations of low dispersion and high refractive index optical glasses, and durable multilayer deposition coating...

After hours at the eyepiece, you finally get to view the fruits of your astrophotography labors. The stars in the center of the field pop like bril...

Argon-Purged and Waterproof: Internally sealed and purged with inert, dry nitrogen gas to prevent internal fogging, to halt the intrusion of fine p...

With its particularly long eye relief of 15.9mm, the 4.5mm LER ocular from Explore Scientific’s 82° Series of Argon-Purged Waterproof Eyepieces pu...

Eyepieces at or near the 10mm range are often considered a mandatory focal length in your collection, as this focal length range is departure p...

Solidly in the mid-magnification range for most amateur telescopes, the 15mm is a true workhorse for visual observers. If you love deep sky ob...

Often considered the perfect mid-range focal length for most amateur telescopes, the 20mm on the ED127 at f7.5 produces a 1 degree true field...

Long considered the “standard” eyepiece that is often supplied with telescopes that are sold by various suppliers, the 25mm focal length cat...