Absolute Encoder Kit for 1100GTO - Standard Temperature (11AE-4-KIT)

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Refer to Availability section below.
To Be Determined

The photo above shows the 1100GTO with either version of the absolute encoders installed - standard temperature or extended temperature. The outward appearance is identical for both versions. 

Absolute Encoders on both axes eliminates drive train errors, and provide software readable absolute position, customizable home and limit functions for robotic imaging. For the 1100 and 1600 mounts, this assumes the clutches haven't been moved and a proper sync has been performed.

We have chosen the Renishaw RESOLUTE Absolute Encoders as best-in-class for performance and reliability. Please read the technical information for more specifics, including the recommended temperature range for each model.

This upgrade kit can be retrofit onto your 1100GTO when you are ready to take advantage of its capabilities. The system will be tested as a whole prior to shipment to ensure that all components are functioning properly. In order to complete the assembly, a little manual dexterity is required to position the screws in a restrictive space. We will provide detailed instructions to guide you through this process.

IMPORTANT NOTE: Since the kit must be installed onto an 1100GTO mount for alignment and testing at AP, it will only be available when we have a mount on hand that we can use. Typically, this will be limited to times that we are assembling that particular mount. As a result, completion of your kit may be delayed.


The GTOCP4 control box and associated power cable are required for all installations.


We plan to offer absolute encoder kits again in early 2023. Please complete the Encoder Kit Notification Request Form if you would like to be contacted when they are available to order. Since the encoders must be ordered months in advance, we would like to have an idea of how many we will need. 

What’s Included:

1100GTO R.A. and Dec. Absolute Encoders

  • R.A. and Dec. Absolute Encoders installed and aligned in adapter ring
  • R.A. and Dec. Readheads with wire harness, aligned in adapter
  • Cable from GTOCP4 Control Box to Interface at rear of the R.A. axis
  • 1100GTO Junction Box with Cables
  • All required fasteners
  • Instructions for installation

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