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Vixen - SD-1 Single Axis Controller

Model#: 3739

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Availability: In stock


Manufactured by: Vixen

Vixen - SD-1 Single Axis Controller


This single-axis controller/drive corrector is for use with an optional #3752 Vixen MT-1 right ascension motor drive. These are compatible with the current Vixen Great Polaris, Great Polaris D2, and Great Polaris Economy German Equatorial Mounts and on telescopes using these mounts. It is also compatible with the optional MT-1 on older Super Polaris and Super Polaris DX mounts and scopes.

When controlled by the SD-1, the accuracy of the MT-1 motor drive is within +/0.005% of the sidereal rate. Powered by 6 user supplied C batteries, this will run for approximately 20 hours. An optional #3599 AC Adaptor is available as is an optional #3828 Manual Operation Clutch, recommended if manual turning of RA axis wishes to be retained.



  • To give Right Ascension tracking to Vixen German EQ mounts
  • Works with Great Polaris, Great Polaris D2, Great Polaris Economy, Super Polaris and Super Polaris DX Mounts
  • Provides 16X sidereal for general movement, and 2X sidereal west and shutoff east for astrophotographic guiding
  • Weight 12 ounces without batteries, comes boxed 8 x 2.75 x 2.75 inches





Additional Information

Manufacturer Vixen
Model 3739