Astro Devices Same Sky AMT10E2 Encoder

Product Overview

The Astro Devices Same Sky AMT10E2 is a capacitive encoder that reports the position of a telescope axis to a digital setting circle (DSC) system. When digital setting circles are fitted to a scope, each moving axis needs an encoder so the DSC can read where the telescope is pointing, and the AMT10E2 supplies that feedback at a resolution of 20,480 steps per revolution. Same Sky is the current name for the encoder line that was previously branded CUI, so this is the same component under an updated label.

Who It's For

This encoder is intended for Dobsonian and Alt-Az telescope mounts that are being paired with a digital setting circle or push-to navigation system. It is the axis-sensing part that links your mount to a compatible DSC unit, so it fits anyone building a new push-to setup, adding position feedback to a second axis, or replacing an encoder on an existing installation.

Key Features & Design

• Capacitive sensing: Reads axis rotation using a capacitive method rather than an optical disc, a design associated with steady output in typical observing conditions.
• 20,480-step resolution: Divides a full revolution into 20,480 steps, giving the DSC fine angular data to compute pointing.
• Mount compatibility: Works with both Dobsonian and Alt-Az mounts.
• Compact and light: The encoder weighs 60 g, keeping added mass on the axis low.
• Single-encoder unit: Supplied as one capacitive encoder, so an axis can be fitted or serviced individually.

Encoder Resolution and Electronics

Resolution is what determines how finely the DSC can resolve telescope position, and at 20,480 steps per revolution the AMT10E2 gives the navigation electronics closely spaced position data across each axis. The capacitive sensing approach measures rotation electronically rather than through a glass or metal optical disc, which is part of why encoders of this style are used on moving telescope axes. Mounting is specific to this encoder: it attaches to the axis through a dedicated arrangement, and Astro Devices confirms the correct fit for your scope directly.

Recommended Uses

Common uses include completing a digital setting circle installation on a Dobsonian, adding push-to guidance to an Alt-Az mount, fitting an encoder to a second axis, and replacing a worn or damaged encoder so an existing DSC system reads position again.

Compatibility and Accessory Notes

The AMT10E2 works with Dobsonian and Alt-Az mounts and pairs with a compatible digital setting circle unit. A full alt-azimuth push-to setup reads two axes, so an encoder is fitted to each of them. This encoder requires special mounting; the appropriate bracket or adapter depends on your axis, and Astro Devices provides those details on request so the encoder mates correctly with your telescope.

Good to Know Before You Order

• Special mounting required: The encoder attaches through a dedicated mounting arrangement rather than a universal bracket. Astro Devices supplies the fitment details for your specific scope, so reach out to confirm the right setup for your axis.
• Resolution: The unit provides 20,480 steps per revolution.
• Naming: Same Sky is the successor brand to CUI; the AMT10E2 is the same encoder under the current name.
• Weight: Each encoder weighs 60 g.

Frequently Asked Questions

What does the AMT10E2 do?

It senses the rotation of a telescope axis and reports that position to a digital setting circle, which the DSC uses to show where the scope is pointing and to guide push-to navigation.

Which mounts does it work with?

It is compatible with Dobsonian and Alt-Az mounts.

Is it difficult to set up?

The encoder itself is a single, compact unit, but it uses a special mounting arrangement rather than a universal bracket. Astro Devices provides the fitment details for your telescope, so the main step is confirming the correct mounting with them before installation.

How many encoders do I need?

A full alt-azimuth push-to setup reads two axes, so one encoder is fitted to each axis. This listing supplies a single encoder.

What resolution does it provide?

The AMT10E2 delivers 20,480 steps per revolution.

Bottom Line

The Same Sky AMT10E2 is the axis-sensing encoder that connects a Dobsonian or Alt-Az mount to a digital setting circle, delivering 20,480 steps of resolution in a compact 60 g unit. With the correct mounting confirmed by Astro Devices, it slots into a push-to setup as a straightforward, replaceable position sensor.