Mounting Other Optical Tubes on a NexStar

  • Michael W. Swanson
Part of the Patrick Moore’s Practical Astronomy Series book series (PATRICKMOORE)


The NexStar mounts have proven to be very popular. GoTo, tracking, light weight, and a low price(particularly the GT models) make them very attractive as potential mounts for a wide variety of optical tube assemblies (OTAs). General concerns to keep in mind include:
  • A longer OTA may affect your ability to point at objects high overhead.

  • A longer OTA may cause balance problems and thus stress the motors or impair tracking accuracy.

  • An OTA weighing much more than the original may strain the motors, shortening their life.


Light Weight Balance Problem Gear Ratio Tracking Accuracy High Overhead 
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Copyright information

© Springer-Verlag London 2004

Authors and Affiliations

  • Michael W. Swanson

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