Science

Align your optics with a precision laser collimator.  An absolute must-have for Aspheric system performance.  This laser collimator boasts s...

UHC is a filter that blocks the visual spectrum except for wavelengths between 480nM and 510nM.  Often called a Nebular or ALP (anti-light pollutio...

The Antares Variable Cross Polarizing eyepiece filter acts like a dimmer switch for your telescope, to tone down brightness and accentuate the con...

Colour filters enhance planetary imaging.  Every refractive system, (lenses, correctors, eyepieces, etc.) produces Chromatic Focal Shift: The diffe...

Twist-lock barlows make for easy eyepiece in-out and work with any barrel format.  These extend focal length, reduce spherical aberration, extend e...