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DD-3 Controller

A dual-axis hand controller for GP2 or GPD2 mounts. This latest version of the controller includes an ST4 compatible autoguider port. Compatible with Vixen MT-1 motors* for the RA and DEC axes, the controller set enables the mount to automatically track celestial objects. A battery case is available (for eight D cells). Optional manual operation clutches can be installed with the motors but these are not compatible with the Star Book S.

* 73752 MT-1 motors were discontinued in June 2019

DD-3 Set

77911 DD-3 Controller
Weight: 220g (7.76oz)

73828 Manual Operation Clutch
Weight: 91g (3.21oz)

72536 Battery Case
Requires 8x D cells (not supplied).

78644 Cigarette Lighter Plug Cord
Connects power tank or other power supply to DD-3 controller.

Specifications DD-3
Drive speed Sidereal rate, 1.5x, 2x and 32x, pause and reverse motions
Electricity consumption 0.8A (max.)
Voltage DC 7.5 to 12 volts
Batteries 8x D size batteries (not included)
Continuous operation duration About 20 hours at 20°C (68°F) with alkaline batteries
Operating temperature -10° to 50°C (14° to 122°F)
Compatible mounts** GP2, GPD2

** Also compatible with the following discontinued models: GP, GP-DX (GPD), GP-E