For sale is my first-generation AT80ED f/6.8 FL550 in good optical and operational condition. Optical Tube Assembly (OTA) and Carrying Case only.
Unique 550mm focal length f/6.8 first released in 2006 from Astro-tech. FPL51 optics. Dual-speed 11:1 focuser, 2" with 1.25" compression ring adapter. These early models came with the vixen compatible shoe instead of a full length dovetail bar, but also have threaded holes for extra mounting options. They were also offered in a variety of colors, this one being all black.
Here is a 2006 review with much more info than I can provide: https://www.cloudynights.com/articles/cn-reports/telescope-reports/astronomy-technologies-at80ed-r1452/
The telescope is sharp and operates well, I've only ever used it for visual observing. Focuser operation is smooth, dew shield extends and retracts smooth. Usual signs of use on the exterior finish and dovetail mount.
Includes factory foam padded hard case, which has some minor exterior scratches from use. No keys for the latches. No diagonal, eyepieces, finder scope or any other accessories included.
Email if interested with contact information. Cash only. Willing to meet halfway within reasonable distance (~40 miles from Tacoma) for strongly interested buyer.