iOptron CEM25 Equatorial GoTo Mount (2" Tripod)

iOptron CEM25 Equatorial GoTo Mount (2" Tripod)

iOptron CEM25 Equatorial GoTo Mount (2" Tripod)

B&H # IO7102E MFR # 7102E
iOptron CEM25 Equatorial GoTo Mount (2" Tripod)

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Product Highlights

  • Motorized Computer-Controlled EQ Mount
  • 128x Microdivision Stepper Motor
  • Go2Nova 8408 Computer Controller
  • 150,000+ Object Database
  • Vixen-Style Dovetail Saddle
  • Built-In 32 Channel GPS Unit
  • AccuAlign Illuminated Polar Scope
  • Periodic Error Correction (PEC)
  • 2" Adjustable Stainless Steel Tripod
  • 27-Pound Payload Capacity
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iOptron CEM25 overview

  • 1Description

iOptron upgraded their ZEQ25 mount with low power consuming 1.8° 128x microdivision stepper motor to crate their CEM25 Equatorial GoTo Mount. It features the motorized mount, Go2Nova 8408 computer hand controller, an upgraded 2" tripod for increased stability, and the AccuAlign illuminated polar scope. Its built-in 32-channel GPS receiver transmits accurate location and time to the hand controller, so when you change your position, the telescope can be set up quickly with accurate information. For precise tracking, as required during long-exposure astrophotography or observation sessions, the CEM25 has the capability for you to program out the Periodic Error Correction (PEC) common to all worm gears. With a maximum payload capacity of up to 27 lb, this mount is ideal for most medium to large refractor, reflector, or catadioptric OTAs with Vixen-style dovetail plates and still be able to handle imaging rigs.

The stepper motor is controlled by the GO2NOVA hand controller. This system has an internal database of 150,000+ celestial objects, with user-defined objects to program yourself, and its firmware is updateable through the built-in serial port. With nine slew speeds and automatic tracking capabilities, finding and keeping objects centered in the field of view is easy whether you're viewing the fast-moving Moon or much slower deep space subjects.

  • German equatorial design for smoother and more accurate tracking
  • Center-balanced: Weight is placed in center for greater stability
  • 27-pound payload capacity, excluding included counterweight
  • 0-60° latitude, ±10° azimuth adjustment range
  • Built-in 32-channel GPS receiver for accurate day, date, time and location information
  • Spring loaded Vixen-style dovetail saddle
  • Polar alignment adjustable even during tracking
  • Adjustable counterweight bar to prevent obstruction with the tripod
    • 20mm bar accepts any compatible weights
    • Includes 10.4 lb counterweight
  • Integrated bubble level
  • Works in the Northern and Southern hemisphere
Motors and Gears
  • 1.8° stepper motor with 128x microdivision
  • 88mm, 144 teeth aluminum R.A. and Dec worm wheels
  • Brass worm gears
  • 55mm R.A. and Dec ball bearings provide smooth, vibration-free movement
  • 35mm steel R.A. and Dec axis shafts
  • Synchronous belt transmission
  • R.A. and Dec gear switches release the gears for balancing OTA
  • Gear tension adjustment eliminates play in gears
  • Resolution: 0.14 arcsec
  • Low-power consumption
    • When tracking: 0.35A
    • Using GoTo: 0.6A
    • Runs on included 110VAC power adapter
GO2NOVA 8408 Hand Controller
  • 4 line, 21 character, red-light back lit LCD display
  • 150,000+ object database
  • User-friendly menu driven interface
  • Slew control
    • Nine speeds: 1x, 2x, 8x, 16x, 64x, 128x, 256x, 512x, 1440x-6°/sec (Max)
    • Quiet mode
  • Multiple alignment procedures:
    • One-star
    • Multi-star
    • Polar
    • SolarSys
  • Real-time Periodic Error Correction (PEC) eliminates tracking errors for long-exposure astrophotography
  • Periodic error of just <0.3 arcsec
  • Tracking rates
    • Sidereal
    • Lunar
    • Solar
    • King Rate
    • User defined: Manually set from 0.99x to 1.01x of Sidereal
  • Track below the horizon, allows mount to track objects below the horizon but still visible, such as if observing from a hill or mountain
  • Updateable firmware through built-in serial port
  • Computer control with planetarium software
  • Integrated autoguiding port
  • Compatible with iOptron electronic foucusers
  • Database:
    • Solar system:
      • 9 objects, including Moon and planets
    • Deep sky:
      • 60 deep sky objects with their common names
      • Complete Messier catalog
      • NGC catalog
      • IC catalog
      • UGC catalog
      • Caldwell catalog
      • Abell catalog
      • Herschel catalog
    • Stars:
      • 195 stars with their common names
      • 210 binary stars
      • Hipparcos catalog
    • Constellations: 88 modern constellations with their names
    • 15 comets
    • 116 asteroids
    • 60 used-defined objects
AccuAlign Polar Scope
  • For accurate and fast polar alignment
  • Dark field illuminated dial
  • Red LED illumination
  • Polar scope is not blocked by the DEC shaft, allowing for re-alignment while mount is running
  • 2" stainless steel
  • Adjustable height from 30" - 52"
  • Two-section
  • Accessory tray with a locking leg spreader
  • Spiked feet for greater stability on uneven ground
  • Weight: 17.6 lb / 8.0 kg
In the Box
iOptron CEM25 Equatorial GoTo Mount (2" Tripod)
  • 2" Steel Tripod for iEQ45 and CEM60
  • Counterweight Shaft
  • 10.4 lb Counterweight
  • Dark Field Illuminating LED Cable
  • Go2Nova Controller
  • 2 x Controller Cables
  • Serial cable
  • 110VAC Power Adapter
  • Limited Two-Year Warranty
  • Table of Contents
    • 1Description

    iOptron CEM25 specs

    Mount Type Equatorial
    Load Capacity 27 lb (12.3 kg), excluding counterweight
    Motor 1.8° stepper motor, 128X microdivision
    Synchronous belt transmission
    GO-TO Capability GO2NOVA 8408 hand controller included
    Azimuth Adjustment Range ±10°
    Latitude Adjustment Range 0 to 60°
    Polar Axis Scope AccuAlign polar scope with dark-field illumination
    Includes Tripod/Pier 2" stainless steel
    Power Requirement Input: 100 - 240 VAC adapter
    Output: 9 - 15 VDC
    Consumption: 0.35 A (tracking, 0.6 A (GoTo)
    Operating Temperature 14 to 104°F / -10 to 40°C
    Dimensions Mount: 12.0 x 11.0 x 6.0" / 15.2 x 27.9 x 30.1 cm
    Weight Mount: 10.4 lb (4.7 kg)
    Weight: 17.6 lb / 8.0 kg

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