This #15 deep yellow Astro-Tech 1.25” eyepiece filter is helpful in improving lunar and Martian contrast in telescopes 8” and larger in aperture, particularly if combined with a polarizing or neutral density filter . . .
This #23A light red Astro-Tech 1.25” eyepiece filter is useful when observing Mercury and Venus during the day and at twilight and when observing Mars, Jupiter, and Saturn with telescopes 4” in aperture and larger . . .
This 4mm Astro-Tech Value Line is one of the shortest focal length and most economically-priced Plössl eyepieces available. It’s designed for very high magnification lunar and planetary observing and for splitting close binary stars . . .
Temporarily out of stock; will charge and ship when available.
This 117mm diameter Feather Touch adapter is needed when upgrading Astro-Tech 10" and 12" Ritchey-Chrétien astrographs to an optional Feather Touch 3" #FTF3015B-A focuser . . .
This forest green Astro-Tech 110mm guidescope ring set mounts a refractor up to 100mm 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 forest green 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 . . .
Product is special order only; please call or e-mail for approximate delivery time. A 20% nonrefundable deposit is required when ordering.
This JMI micro-slew drive for the Astro-Tech Voyager altazimuth mount gives you hands-free/vibration-free pushbutton tracking of celestial objects in altitude and azimuth . . .
If you have a big scope (10” in aperture and larger), this #29 dark red Astro-Tech 1.25” eyepiece filter can be useful when observing Mercury and Venus during the day and at twilight and when observing Mars, Jupiter, and Saturn . . .
