Orion st80 ota. I used the standard Orion Awesome Autoguider Package that comes with an ST80 scope, Starshooter Auto Guider (SSAG), mounting rings and Vixen style mounting bar. The Orion ST80 is a popular short-tube refractor telescope for amateur astronomers and astrophotographers. Refractor Optical Tube Assemblies. The first part of the man-ual contains information that pertains to all three configurations. The Orion Short Tube 80 OTA is an improved version of the original Orion ShortTube 80 telescope, with fully multi-coated optics that reveal brighter, sharper images. The ShortTube 80 refractor OTA can also perform as a great compact wide-field visual telescope for perusing large swaths of the night sky. I took it out for a little test drive last night. I forgot just how nice this little scope is! Even at high mag on the Moon its pretty nice. . The fast f/5 achromatic optics provide a wide field of view that makes guide star acquisition a breeze. kumts 1v yctc qi ws9n gjyc 62vaj q7ng tkdg v8qum