All Products

48mm Female to 42mm Male Adapter (SFA-F48M42-008)

Description This adapts the over-sized M48 X .75 T thread (same as 2” filter thread) to the standard...

Coiled Cord for Losmandy Stepper Motor

Description This Replacement Coiled Cord is a replacement for the Stepper Motor Cord on your Losmand...

294M-Pro (Monochrome)

QHY294M Pro Astronomy Camera is a 4/3-inch back-illuminated camera, equipped with Sony IMX294 (Color...

Bullseye Finder Charts of the Caldwell Objects Volume 2

Caldwell Objects Volume 2: C33-C109 - Southern Hemisphere Objects Description Patrick Moore compiled...

Lycra Light Shroud

Description The Lycra/Nylon blend shroud that is standard equipment on the TeleKit is available sepa...

USED DirectSync APO for FocusLynx

This used focus motor is in fair condition. The cable port has some cosmetic damage. Controller and ...

Gran Turismo 81 Internal Focus Design (WIFD) Apochromat

Description Explore Stellar Phenomena with Precision: The William Optics Gran Turismo 81 WIFD Unveil...

2" Eyepiece Holder for Quark Solar Filters

Description This 2" eyepiece holder threads into the top of your Quark after removing the 1.25" adap...

2-inch to 2.156"x24tpi Male Thread Adapter (17667)

Description Adapters for 2-inch Focuser Drawtubes 2-inch O.D. Adapters to fit the TCF-S and other 2-...

MicroTouch Autofocuser - Wireless (MTWAF)

Description The MicroTouch Autofocuser is designed to work with the popular Feathertouch line of foc...

152mm Achromatic Refractor - AR Doublet Series (DAR152065-02)

Description The AR152 (six-inch) model, is a classic air-spaced, crown-and-flint doublet achromatic ...

18" Flat Mounting Plate (FP1800)

Description For Astro-Physics 900, 1100, 1200, 1600 and Mach1GTO  Mounts This larger machined a...