The Mini Borg scope provides a solid base upon which very compact and stable guide scope systems may be built: [list] [*][b]Mini Borg 50 Basic Guide System[/b]: [list] [*]AG50B: Mini Borg with drawtube focuser [*]AG50B2: Mini Borg with precision helical focuser [/list] [b]Mini Borg 50 Deluxe Guide System[/b]: [list] [*]AG50DX: Mini Borg with drawtube focuser + X-Y Offset Positioner [*]AG50DX2: Mini Borg with precision helical focuser + X-Y Offset Positioner [/list] [*][b]Mini Borg 60ED Guider/Imaging System[/b] [/list] [b]The AstroBin database entry encompasses all variants above.[/b]