These mounting rings fit the TMB92L triplet apo refractor, as well as any other refractor with a 90mm OD tube such as the Astro-Tech AT80 and all William Optics 80mm telescopes (Megrez 80 and ZenithStar 80, for example) . . .
If you wear eyeglasses, this Astro-Tech 5x three-element apochromatic ED Barlow is a great way to add eyeglass-friendly high power observing by amplifying the power of your existing long focal length/long eye relief eyepieces . . .
This flexible plastic rollup dew shield is designed specifically for use with the Astro-Tech 8" AT8RC Ritchey-Chrétien astrograph. It has two notches designed to clear the dovetail mounting plates on the top and bottom of the optical tube for a secure and light-proof fit . . .
With a long eye relief that’s good for eyeglass wearers, this low power 40mm Astro-Tech Value Line Plössl gives you the widest field possible from a 1.25” eyepiece for the big picture at a very little price . . .
This Astro-Tech #80A medium blue 1.25” eyepiece filter is very helpful when observing the Moon, Mars, Jupiter, and Saturn if you have a scope 6” to 8” in aperture and larger . . .
Temporarily out of stock; will charge and ship when available.
This black finish Astro-Tech 90mm guidescope ring set mounts a refractor up to 80mm o.d. on an optional Losmandy-style “D-plate” dovetail that has been piggybacked on your main scope so that the small refractor can be used as a finderscope, photoguide, or astrograph . . .
This 20mm Astro-Tech Value Line Plössl is a good quality medium power 52° field eyepiece with long eye relief for eyeglass use at a surprisingly low price . . .
This 9mm Astro-Tech Value Line Plössl is designed for high value/high power/high performance observing at a very low price. It is particularly well-matched to Schmidt-Cassegrain telescopes . . .
The 12” Astro-Tech AT12RC Ritchey-Chrétien astrograph is a large aperture true Ritchey-Chrétien astrograph, an astro-imager’s dream, a Sky & Telescope Hot Product for 2011, and – at a price thousands below competitive scopes – the first reasonably-priced 12” true R-C available.
This 6mm Astro-Tech Value Line Plössl is an exceptional value for high magnification lunar and planetary observing and for splitting close binary stars when you consider the performance you get for the very modest price you pay . . .
