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Explore Scientific - TDM Telescope Drive Master Ver. 2 Encoder and Electronics Set (Requires Mount Adapter)

Model#: ES-721000

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Availability: In stock


Manufactured by: Explore Scientific


Intoducing the Telescope Drive Master!
Designed to attach to popular, modestly-priced equatorial mounts, the Telescope Drive Master™ (TDM) uses a mount-specific adapter, an ultra-high resolution encoder, and an electronics package that transforms your drive system into a super-performance, research-grade drive. This device does not require tedious PEC training, just turning on the TDM almost eliminates all of the periodic and non-periodic tracking error of your equatorial mount.

How Does the TDM Work?

The electronic controller unit compares the signals incoming from the high precision rotary encoder mounted onto the RA shaft with the time signal of its quartz oscillator. Any deviations of the angular velocity of the RA shaft from the prescribed drive rate, are compensated by feedback regulation in real time by accelerating or slowing down the drive.

If further correction is needed because of errors other than periodic drive error (e.g. dirty bearings, worm gear slipping on its shaft, etc.), the TDM allows auto-guider input as well.
Which Mounts Does it Work On?
There are adapters to fit many popular mounts, including select models from Celestron, Meade, Losmandy, Synta, Orion, Vixen, and Astro Physics.
How Much Better Can My Drive Perform?
A typical mount can easily have 20-30" (or higher) periodic error as "out-of-box result", Telescope Drive Master can improve it down to 2-2.5" peak-to-valley total or less, which is often better than the same feature of the very expensive premium category mounts. Certainly, the better quality of mounts will also be able to provide higher accuracy (even less than ±1" or 2" total) using Telescope Drive Master.


EXPLORE SCIENTIFIC branded products are under warranty forever, and this warranty is transferrable from owner-to-owner as long as the product is registered with EXPLORE SCIENTIFIC.

This Transferrable Unlimited Lifetime Warranty covers any problem no matter what the cause. In addition, this new warranty supersedes and is retroactive for EXPLORE SCIENTIFIC branded products that are already serving in the field, provided they are registered with us.

That means that no matter what the cause of the problem, no matter if you are the second or the 20th owner, we will take care of your EXPLORE SCIENTIFIC branded product without any repair or replacement fees.  For more info watch the following video by  Mr.Scott Roberts, Founder of Explore Scientific.






 MC 11/14


Additional Information

Name Explore Scientific - TDM Telescope Drive Master Ver. 2 Encoder and Electronics Set (Requires Mount Adapter)
Manufacturer Explore Scientific
Model ES-721000
Warranty Explore STAR Transferrable Unlimited Lifetime Product Warranty