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Double stack performance, single stack price 76mm aperture 630mm focal length f/8.3 Official solar telescope of the Charlie Bates Solar Astronomy ...

Authors: Bruce GrubbsPaperback: 368 pages, 3rd Ed.Lace up your boots and sample 120 of the finest trails in Arizona. Hike the Boucher-Hermit Trails...

Author: Erik MolvarPaperback: 311 pagesSouthern Arizona offers unlimited opportunities for backcountry exploration. This second edition of Hiking A...

Additonal 1.25" Reflector Mirror for Advanced CT Laser Collimator Features: Precision retro reflector mirror for Advanced CT Laser Collimtor - Dou...

Self-Centering Adapter (SCA) Provides Repeatable InstallationThe HoTech laser collimator separates itself from all other laser collimators with its...

Self-Centering Adapter (SCA) Provides Repeatable InstallationThe HoTech laser collimator separates itself from all other laser collimators with its...

New! 14" HyperStar Laser Collimator Package includes:1 x Advanced CT Laser Collimator1 x 14" HyperStar reflector mirror adapter1 x High accuracy du...

Self-Centering Adapter (SCA) Provides Repeatable InstallationThe HoTech laser collimator separates itself from all other laser collimators with its...

Self-Centering Adapter (SCA) Provides Repeatable InstallationThe HoTech laser collimator separates itself from all other laser collimators with its...

FeaturePackage includes:1 x Advanced CT Laser Collimator1 x HyperStar reflector mirror adapter for 9.25" and 11" model1 x High accuracy dual-sided ...

Innovation brings Affortable and Portable Collimation into RealitySince the invention of the Cassegrain Telescope in 1672 by the French sculptor Si...

Innovation brings Affortable and Portable Collimation into RealitySince the invention of the Cassegrain Telescope in 1672 by the French sculptor Si...

Collimates 8" Schmidt-Cassegrain Telescopes with HyperStar Lens installed. Package Includes: Advanced CT Laser Collimator 8" HyperStar Reflector M...

High Quality Optics Designed for Refractor Telescopes This field flattener is fully multi-coated on two-element lens allowing the most efficient li...

Announcing the Self-Centering Camera T-Adapter for Astrophotographers.The Self-Centering Adapter (SCA) mechanism provides repeatable and reliable c...

2" SCA T-Adapter center and square loads perfectly in your visual back and provides a secure adaption for the best imaging result Announcing the S...

The definitive guide to locating and recovering meteorites, written by one of the best-known personalities in the field, the charismatic Emmy-winni...

This is a website test product. If you buy this product, your credit card will be billed for the full price of $1,499,999,999.95, plus applicable t...

The first edition of Hubble's Universe displayed 300 pages of high-resolution celestial portraits selected by bestselling astronomy writer Terence...

World’s first micro spotting scope—fits easily in your vest/coat pocket, cargo pants, or shoulder bag 9-27x magnification range Comfortable 45° vi...

A stable-yet-lightweight, versatile, and easy-to-use tripod perfect for just about any application Smoothly pan the horizon or tilt the viewing an...

Shown with optional Astro-Physics 1200GTO equatorial mount, Apogee Alta U16M, Astrodon MonsterMOAG, and SBIG ST-402ME Starizona has developed an as...

Starizona has developed an astrographic telescope that will deliver the largest, highest quality field of view on the market. With a 70mm diffracti...

Second-generation design optimized for new-style Hyperion 12.5" and 16" models. Available now. The optical design of the Hyperion focal reducer has...