OTA

Featuring Best in Class Resolution and Professional Grade Optics Configuration 4.2mm Image Size >.65a Bandpass (Single Stack) >.45a Bandpass...

The B1200 model is the best choice for photography over the B600 4.2mm Image Size >.65a Bandpass (Single Stack) >.45a Bandpass (Double Stack...

This big 127mm (5") Explore Scientific Essential Series air-spaced ED triplet apochromatic refractor is loaded with quality optical performance at ...

The included 1.7x extender takes the FOA-60 to another level, as well as letter.  This combination is referred to as the FOA-60Q.  You will simply ...

This 102mm (4") Explore Scientific Essential Series air-spaced ED triplet apochromatic refractor is loaded with quality optical performance at a su...

The 11" f/2.2 Rowe-Ackermann Schmidt Astrograph (RASA) - the next advance in deep space imaging - is available now for the serious astrophotographe...

The big Sky-Watcher Esprit 150mm ED apochromatic triplet refractor with thread-on field flattener combines premium high contrast/high resolution im...

The new Takahashi FSQ-85ED (the "Baby Q") apochromatic ED quadruplet is a clear leader in the ranks of relatively small aperture refractors. Its fo...

This newest Version A of the Astro-Tech AT10RCT carbon fiber Serrurier truss Ritchey-Chrétien Hot Product for 2015 makes high quality large-apertur...

The ZWO FF80 APO is a highly refined 80mm f/7.5 quadruplet apochromatic refractor, built from the ground up to deliver uncompromising optical perfo...

The ZWO FF130 APO is a high-performance 130mm f/7.7 quadruplet refractor designed to meet the needs of astrophotographers and visual observers who ...

  Flat field free of optical aberrations like field curvature, coma, astigmatism and chromatic aberration across an entire APS-C sensor. Unlike th...

The 7" Maksutov Cassegrain is a fantastic instrument just begging to get out under the stars and bring its high contrast optics to your eye. The 7"...

This Questar Seven Classic Titanium uses the same quartz mirror and coatings combination as the renowned 50th Anniversary 3.5" Questar, perhaps the...

 The ZWO FF series is a potential fit for your astro-photography needs. The ZWO FF107 APO is a finely crafted, high-performance apochromatic refrac...

140mm has long been considered the perfect size for an APO refractor. Explore Scientific makes that size a reality with fantastic optics and mechan...

If you are a serious deep space astrophotographers with a big mount, this Sky & Telescope 2016 Hot Product 12" Astro-Tech AT12INT carbon fiber ...

The original Hot Product TeleVue NP-127is has long been regarded as one of the finest optical systems available for both visual observing and imagi...

This Astro-Tech AT106EDQ ED refractor has: • 106mm f/7 fully multicoated four-lens/two-group refractor• two ED lens elements• amazing flat field as...

Observe through a Questar Seven Astro, and you'll see detail and clarity in the skies that you have never seen through a lesser scope, or even thro...

There are mere mortal telescopes and then there is the Questar Seven Classic Titanium with broadband coatings, which inhabits a higher plane of ast...

The Takahashi FC-76DS is an updated version of the beloved Takahashi from 1980.  The fluorite doublet will truly take you back to the future. Like ...

Relive the 80's with this updated version of a Takahashi Classic, the Takahashi FC-76DCU. Like the FS series, the FC series are apochromatic refrac...

The Sky-Watcher Evostar 150DX is one of the most affordable 6" ED doublet refractors available today with a large format rack and pinion focuser. S...