Orion 80mm ED Apo Refractor Telescope Optical TubeAn apochromatic refractor offered at an unprecedented low price. 80mm objective includes one element of FPL-53 "ED" glass, which virtually eliminates false color. Features a 2" aluminum Crayford-type focuser that accepts 2" or 1.25" accessories. Does not include mount or tripod - can be purchased separately. One-year limited warranty
We love those premium "apo" refractors as much as the next guy. We just don't think you should have to work a second job or put the family heirlooms on eBay to own one. Now you won't, thanks to our amazingly affordable Orion 80mm Extra-Low Dispersion Refractor Telescope Optical Tube.
It's a sweet telescope all right. With a focal length of 600mm (f/7.5), the "ED80" is wonderfully suited for visual applications on both solar system and deep-sky objects as well as for prime-focus astrophotography and charge coupled device or, "CCD" imaging.
It sports a multi-coated 80mm objective lens doublet, one element of which is crafted from Extra-Low Dispersion, or "ED" optical glass. This high-grade glass greatly reduces the chromatic aberration inherent in standard achromats. Images appear more sharply focused and color fringing around bright objects is lessened dramatically.
The objective lens is held in a machined, black anodized aluminum cell and shaded by an aluminum dew cap. Internal tube baffles ensure high contrast and prevent ghosting.
The ED80mm features a superb, backlash-free 2" Crayford-style focuser, which accepts both 2" and 1.25" diagonals. Notice the focus wheels: classy, brushed-aluminum hubs with ridged rubber grip rings. Nice touch. Set the focuser tension or lock it for imaging with the focus lock knob. The molded-in dovetail base accepts the optional Orion finder scope of your choice. Tube has a built-in 1/4"-20 plate.
At a length of just 24", the ED80mm is extremely portable. And at an affordable price so the rest of us can enjoy the pleasures of a premium refractor without the pain of the premium price!
Sold as optical tube assembly only, without accessories. Compatible tube rings are Orion part #7371, sold separately. Finished in gunmetal gray metallic. One-year limited warranty.