A core part which functions as DEC body of Vixen's Advanced Polaris mount as well as elevation axis of the APZ Alt-Az mount. Manual Slow Motion Control Module, DEC Motor Module,

AP Counterweight Bar and AZ Counterweight can be installed. The built-in battery compartment makes it possible to function as a power supply when DEC Motor Module is connected.

Power: (Battery compartment is built-in)　

AA cells x 4 (Alkaline, Ni-Cd, Ni-MH cells are recommended)

Fuse: 125V, 1A Type B, Dia.6x30mm

Size：124.5×81×78mm（w/o extruded parts）

Weight：490g (without batteries)