iOptron HEM27 User Manual

5
1. HEM27 Overview
Introducing the HEM27 and the HEM27EC, iOptron’s revolutionary hybrid strain wave drive mounts.
These light weight, high payload tiny titans will deliver an astronomy experience like never before. Imagine
a mount head weighing in at 8.15lbs with a payload capability 29.74lbs, without needing a cumbersome
counterweight or shaft. Applying iOptron’s multi decade experience creating precision mounts, the HEM27
brings this vision to reality.
Utilizing state of the art strain wave drive technology for the RA movement in tandem with backlash-
free DEC worm/belt drive design, the HEM27s deliver unparalleled weight to payload efficiency. Its black
anodized all metal CNC machined body is not only appealing to the eye, it’s a rugged platform that will
perform at the highest level for many years to come. Unique features such as an electronic friction break
and power down memory allow the mount safely stop and resume a GoTo slew or continue tracking even
after an abrupt power loss (No need to realign and start from the beginning).
The HEM27EC features a high precision RA axis encoder that delivers incredible tracking accuracy,
enough that many will choose to image “sans” guiding.
The iOptron HEM27 mount uses the Go2Nova
®
8409 hand controller to navigate the night sky. This
incredible technology helps observers find celestial objects with the aid of the mount's 212,000+ object
database!
A HEM27 mount can be controlled by a computer, either via ASCOM/Commander for a Windows PC
or a third party INDI driver for MacOS software; a SmartPhone/Tablet via iOptron Commander Lite or an
App like SkySafari; or a Raspberry Pi device via INDI driver.
Features:
 Advanced strain wave drive technology
 Payload capacity of 13.5 kg (29.7 lbs) with the mount weight of 3.7 kg (8.15 lbs)
 CNC machined
 Unique friction brake to safely stop movement during a planned or unplanned power interruption
 360 second gear period
 High precision encoder with real time PEC (RPEC) for HEM27EC
 Go2Nova® hand controller with ~212,000 object database
 iPolar electronic polar scope for easy and accurate polar alignment (for HEM27A and HEM27EC)
 Cable management system, no hanging exterior cables to moving parts
 Accept Vixen or Losmandy-D style dovetail bar
 Built in zero position search and locator
 Power down position and location memory
 Integrated ST-4 autoguiding port
 Built-in Wi-Fi (via hand controller)
 USB port for firmware upgrade and computer control
 Soft carrying case
 Two year warranty
 Optional carbon fiber tripod #3061
 Optional iGuider
TM
autoguiding system #3360
 Optional counterweight shaft (#8456SL) and counterweight (#3006-10)
 Optional MiniPier extension #8040 or #8040-8

iOptron HEM27 Specifications

General

Brand	iOptron
Model	HEM27
Category	Racks & Stands
Language	English