XJ HM-17 Harmonic Equatorial Mount with Hand Controller, Compatible with NINA, ASCAIR

XJ HM-17 Harmonic Equatorial Mount with Hand Controller, Compatible with NINA, ASCAIR

Product Information:

The XJ HM-17 harmonic equatorial mount with hand controller features a lightweight high-rigidity structure and a precision harmonic drive system. Supporting both equatorial and alt-azimuth modes, it offers stable tracking, flexible connectivity through the ONSTEP control platform, and compatibility with software such as NINA and ASIAIR. Integrated safety mechanisms and refined structural details support consistent performance in long-duration astrophotography and observation setups.

.Lightweight Structure with High Load Stability: The mount body weighs approximately 5.1 kg while maintaining high structural rigidity. It supports up to 13 kg without counterweights and up to 18 kg with counterweights. Instead of pursuing enormous weight reduction, reinforced thickness and stiffness are retained at critical load-bearing areas, helping reduce micro-vibration and deformation when using long focal length refractors, larger camera bodies, or filter wheels.
.High-Precision Harmonic Drive System: Built with a premium harmonic reducer featuring a 400:1 reduction ratio. Measured periodic error is controlled within ±10 arcseconds, enabling smooth tracking and stable guiding performance during long exposure sessions.
.Equatorial and Alt-Azimuth Dual Operation Modes: Supports both equatorial and alt-azimuth configurations, with an adjustable altitude range from 0° to 90°. This flexibility allows seamless switching between imaging setups and visual observation scenarios without structural modification.
.Multiple Connectivity Options with Included Hand Controller: Powered by the ONSTEP control system with an open and flexible architecture. The mount supports multiple wireless connection methods and can be operated via computer, smartphone, controller, and widely used astronomy software. The system is designed to combine with different equipment combinations rather than being limited to a single closed ecosystem.
.Comprehensive Safety and Control Details: Safety-focused design elements include an RA-axis electronic brake, FRAM-based power-loss memory, power interruption protection, mechanical home positioning, and fine adjustment mechanisms. These features improve operational reliability during extended outdoor use, unattended operation, and variable power conditions.

Specifications:

.Material: Metal + Electronic Components
.Product Weight: 5100g
.Package Weight: 5500g
.Product Dimensions: 24 x 8.1 x 8.1cm
.Package Dimensions:30 x 10 x 10cm
.Packing: Graphic Carton
.Ages: 16+

Packing List:

.Equatorial Mount *1
.Data Cable *1
.Hand Controller *1