Product details:

The Explore Scientific AR Air-Spaced Doublet Series telescopes are classic air-spaced, crown-and-flint, doublet achromatic f/6.5 refractors with a superior-class optical figure. Explore Scientific AR Series telescopes come with heavy-duty, high quality components, including a 2 dual-speed focuser, a one-piece 2 diagonal with 99% dielectric coatings, an 8 X 50 non-illuminated straight -thru finderscope and quick release bracket, and a cradle ring assembly with Vixen-style dovetail mount.Achromatic lenses eliminate chromatic and spherical aberrations for true color rendition and without distortion across the entire field of view
Crayford focusers use a toothless friction system that allows for super-fine precision focusing without backlash
Large 2 drawtube prevents vignetting when using wide-field eyepieces for viewing, or large imaging sensors for astrophotography
Compatible with any alt-az or equatorial mount with a Vixen-style saddle
Integrated carry handle on cradle-ring assembly