DESC: The parabolic primary mirror is precision figured from Pyrex low-expansion glass and housed in a high-ventilation aluminum cell designed by Orion. The tube is outfitted with a 2" collimatable focuser (with 1.25" adapter) and a 9x50 finder scope. And there's no shrugging at the beefy Atlas mount. It features integrated RA and Dec drives and 2"-diameter steel tube legs.