Description

iOptron HEM27 Hybrid Harmonic Drive Equatorial Mount

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).

A HEM27 mount can be controlled by a computer, either via ASCOM Commander for a Windows PC or a third party INDI driver for a MacOS software; a SmartPhone Tablet via iOptron Commander Lite or an App like SkySafari; or a Raspberry Pi device via INDI driver.

The HEM27EC features a high precision RA axis encoder that delivers incredible tracking accuracy, enough that many will choose to image “sans” guiding.

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
• Permanent periodic error correction (PPEC)
• Go2Nova® hand controller with ~212,000 object database
• Cable management system, no hanging exterior cables to moving parts
• Dual saddle (Vixen and Losmandy-D styles)
• 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

• Technical Specifications

  Mount		Hybrid Equatorial Mount
  RA gear system		StrainWave 17
  DEC gear system		Backlash-free worm belt system
  RA reduction ratio		480:1 (SWG 120:1, Sync belt 4:1)
  Payload w o CW *		29.74 lbs (13.5kg)
  Mount weight		7.49lbs (3.4kg) w o dovetail saddle, 8.15lbs (3.7kg) with dovetail saddle
  Payload Mount weight		3.65
  Payload with CW *		44 lbs (20kg)
  Period		360 second
  Drive motor		Stepper motor
  Structure Material		All metal, CNC machined
  Exterior finish		Anodized black
  PEC		Yes, Permanent PEC
  Latitude adjustment range		15º ~ 65º
  Azimuth adjustment range		± 5º
  Polar Scope		No
  Level indicator		Level bubble
  Control system		GOTONOVA Commander
  Hand Controller		Go2Nova® 8409 with ~212,000 objects database
  Tracking		Automatic
  Maximum slew speed		6º sec
  Power consumption		0.5A(Tracking), 1A(GOTO)
  Power requiremention		DC12V-5A (5.5 2.5mm DC plug)
  AC adapter		100V ~ 240V (included, indoor use only)
  Cable		No moving wrapping
  Cable management		2X12V (4A max.), 1X USB2.0
  Power off brake		Electronic friction brake
  Power-down memory		Yes
  Wi-Fi		Built-in
  Communication port		Yes (Wi-Fi and USB)
  Autoguide port		Yes (ST-4 compatible)
  Firmware upgrade		Yes
  Dovetail saddle		Vixen & Losmandy
  Tripod		Optional
  Counterweight shaft		SS Φ20X200mm, M16 thread (Optional)
  Counterweight		10 lbs (4.5kg)(Optional)
  Operation temperature		-20ºC ~ 40ºC (hand controller -10ºC ~ 40ºC)
  Warranty		Two year limited

  In the Box

  • iOptron HEM27 Hybrid Harmonic Drive Equatorial Mount
  • iPolar (optional)
  • Go2Nova Hand Controller
  • Dual Saddle
  • Carry Case
  • Tripod Not Included

  • Warranty & Manuals
    

    iOptron 2-Year Warranty

  Model	HEM27, HEM27 with iPolar