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Takahashi - EM-400 Temma II Mount


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Availability: In Stock


In Stock

Manufactured by: Takahashi


The new EM-400 mount has been developed to fill in the gap between the NJP and larger EM-500 mount. This new mount has been designed to carry an 85 lb load.

This mount disassembles into three sections, the R.A. Dec assembly, the base assembly and the counter weight shaft. This reduces the heaviest part to 22.3kgs [49 lbs.] lighter than the weight of the NJP equatorial head and makes transportation to remote sites easier.

The entire mount rotates 360" on its base for easier set up. This allows the tripod to be set in the most secure position.

All of the cables attach to the underside of the Dec. housing and the use of internal encoders allows the mount to be used without having the cable wrap around in inconvenient positions.

The 8 kg. counter weights use two lock screws for more secure attachment to the counter weight shaft.

The EM-400 uses the highly accurate EM-200 computing reticle with an 11x eyepiece to allow 3 arc minute polar alignment to the celestial pole. This reticle is usable until the year 2040.

The EM-400 is a dual voltage mount that will operate on 12 volts [250x sidereal] or 24 volts [500x sidereal].

The Temma-2 system is compatible with the Sky and other popular software using the free ASCOM and Linux drivers.

The EM-400 can be used anywhere in the world with a latitude adjustment from 0"to 50" in either hemisphere.



  • Type German equatorial motor driven usable in northern or southern hemisphere
  • R.A. Slow Motion Motor driven
  • DEC Slow Motion Motor driven
  • Azimuth adjustment 360°
  • Latitude adjustment 0° to 50°


Drive system

  • Temma-2 "go-to" 500x sidereal @ 24 volts
  • Load capacity 85 lbs
  • Gross weight Equatorial head: 22.5kgs. [49.5 lbs.]
  • Base: 5.2kgs. [11.4lbs]
  • Counter weight shaft 2kgs. [4.4lbs.]
  • Total: 29.5kgs. [64.9lbs]
  • Counter weights 8.0 x 2 w/double locks
  • Polar finder Illuminated, built-in w/3' accuracy until 2040


Drive system 240pps quartz controlled stepper motors

High speed 500x @ 24v/250x @ 12v

Accuracy ?3.5"

Can be used with J wooden tripods and NJP adjustable metal tripod



Additional Information

Name Takahashi - EM-400 Temma II Mount
Manufacturer Takahashi
Model TSM0400
Manufacturer Part No TSM0400
Azimuth Adjustment 360
Counterweights 8.0 x 2 w/double locks
DEC Slow Motion Axis Motor driven
Motor Drive Temma-2 go-to 500x sidereal @ 12 volts
Mount German equatorial motor driven usable in northern or southern hemisphere
Payload Capacity 85 lbs
R.A. Slow Motion Axis Motor driven