Products

This Antares 1.25" 0.5x focal reducer lens (tele-compressor) is used under the Orion brand name to thread into the nosepiece of Orion StarShoot Sol...

This Antares ND9 (neutral density 0.9) gray filter reduces the brightness and glare that can mask low contrast details during lunar and planetary o...

This inexpensive finderscope quick-release bracket is designed to mount 50mm Antares right-angle finders primarily on Celestron and Meade Schmidt-C...

This right-angle erect/right-reading image finderscope is a sensible replacement for the straight-through inverted image 9 x 50mm finder supplied w...

This right-angle erect image finderscope is a sensible replacement for the straight-through inverted image 9 x 50mm finder supplied with many curre...

This right-angle erect image finderscope is a sensible replacement for the straight-through inverted image 8 x 50mm finder supplied as standard equ...

This right-angle erect/right-reading image finderscope is a sensible replacement for the straight-through inverted image 9 x 50mm finder supplied w...

This right-angle erect image finderscope is a sensible replacement for the straight-through inverted image 9 x 50mm finder supplied with many Celes...

This erect image/right-reading right-angle finderscope is a sensible and convenient replacement for the straight-through inverted image 8 x 50mm fi...

This right-angle erect image finderscope is a sensible replacement for the straight-through inverted image 8 x 50mm finder supplied as standard equ...

This right-angle erect/right-reading image illuminated finderscope is a sensible replacement for the straight-through inverted image finder supplie...

This right-angle erect image illuminated finderscope is a sensible replacement for the straight-through inverted image finder supplied with Meade L...

This right-angle erect/right-reading image finderscope is a sensible replacement for the straight-through inverted image finder supplied with Meade...

This right-angle erect image finderscope is a sensible replacement for the straight-through inverted image finder supplied with Meade LXD55 and LXD...

This focal reducer and field flattener consists of a four-element multicoated 40mm lens in a metal cell. It threads onto the rear cell of 5" to 16"...

If you are looking for a great medium focal length eyepiece at a fantastic price, then grab one of these closeout 15mm while you still can.The 15mm...

This #12 medium yellow Astro-Tech 1.25" eyepiece filter is helpful in improving lunar and Martian contrast in telescopes 4" to 8" in aperture, part...

This #21 orange Astro-Tech 1.25" eyepiece filter is useful in improving contrast when observing the Moon and all planets out to Saturn in telescope...

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 M...

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 V...

If you have a big scope (8" in aperture and larger), this Astro-Tech #47 violet 1.25" eyepiece filter can help detect high clouds and haze over the...

If you have a scope 6" in aperture and under, this Astro-Tech #56 light green 1.25" eyepiece filter is a useful tool for observing different featur...

This Astro-Tech #58 dark green 1.25" eyepiece filter is very helpful when observing the Moon and Mars, plus enhances a variety of features on all t...

Looking to make your Astro-Tech (or variant) scope faster and flatter for photography? Then the .8x reducer/flattener is exactly what your are loo...