10Micron GM4000 HPS II ColdTemp 10Micron GM4000 HPS II ColdTemp combines the 150 kg instrument capacity of the standard mount with the manufacturer’s special low-temperature configuration. It is a German equatorial HPS mount with absolute on-axis encoders, precision worm gearing and two-axis brushless servo drive.
Manufacturer model: 10Micron GM4000 HPS II ColdTemp · Specifications checked against manufacturer data on 2026-11-04
10Micron GM4000 HPS II ColdTemp combines the 150 kg instrument capacity of the standard mount with the manufacturer’s special low-temperature configuration. It is a German equatorial HPS mount with absolute on-axis encoders, precision worm gearing and two-axis brushless servo drive.
Cold-temperature equipment
10Micron specifies operation down to −30 °C for this option, using special low-temperature lubricants, silicone-sheathed wiring and suitable electronics. This is an operating specification for the ColdTemp build, not the much lower storage-temperature figure. It does not certify every attached camera, cable or third-party accessory for the same conditions.
Mechanics and performance
The model retains the standard mechanical architecture, 125 kg mount weight without accessories, 60 mm counterweight shaft and 2–8°/s published slewing range. The onboard model supports up to 100 points and compensates polar, orthogonality, refraction and flexure errors.
Control and installation
The 24 V DC system supports keypad and compatible remote computer/web control. Counterweights are separate. Match the power supply and GPS receiver to the actual control-box generation, and use the model-specific technical sheet and support interface for installation.
The current GM4000 technical sheet specifies 4 A maximum-slew and 5 A peak; older brochures give 5 A and 6 A. Current model technical-sheet values are selected. Its 60 mm internal cable passage is distinct from its 60 mm counterweight shaft. The product-page Cold Temperature option explicitly states −30 °C; the technical-sheet “−30/−35” wording is not treated as an unconditional −35 °C guarantee.
Additional specifications
Model variant
Cold Temperature version
Cold temperature minimum (°C)
-30
Cold temperature measures
Special low-temperature lubricants, silicone-sheathed wiring and low-temperature electronics
1454010C
Fiche technique
Dimensions des axes
RA 85 mm; DEC 80 mm; alloy steel
Réglage fin en azimut
±10°
Diamètre de base sur le plan (mm)
360
Roulements
Preloaded tapered roller and roller-thrust bearings
Gestion des câbles
Internal through-axis routing; 60 mm passage
Ports de communication
RS-232; GPS; ST-4 autoguide; Ethernet
Diamètre de la barre de contrepoids (mm)
60
Matériau de la barre de contrepoids
Stainless steel
Poids de la barre de contrepoids (kg)
13
Contrepoids inclus
No
Référence du plan coté
At 45°: side height 785 mm; front height 673 mm
Codeurs
Absolute on-axis encoders; closed-loop HPS control
Charge d'instruments (kg)
150
Raquette
Metal housing; heated dimmable display and backlit keys; standalone operation
Plage de latitude
20–70°
Consommation selon le fabricant
Approximately 1.5 A sidereal tracking; 4 A maximum slew; 5 A peak
Référence fabricant
10M4010
Précision de pointage selon le fabricant
Less than 20 arcsec with 25-star model; model supports up to 100 points
Contenu standard du fabricant
GM4000 HPS II Mount; Controlbox; Keypad; Counterweight shaft; Cables set; Allen wrenches; Shipping Kit; Includes the shipping wooden pallet-box and pier adapter.
Exemple de suivi du fabricant
Approximately 1 arcsec typical over 15 minutes; approximately 0.6 arcsec RMS with a 25-star model and flexure/polar-error compensation
Limites au méridien
±30° software; ±45° mechanical in RA
Modèle
10Micron GM4000 HPS II ColdTemp
Moteurs
Two-axis AC brushless servo
Type de monture
German equatorial
Poids de la monture sans accessoires (kg)
125
Base de données d'objets
Stellar and deep-sky catalogues; solar system objects, comets, asteroids and artificial satellites; user-defined targets
Température de fonctionnement
−30 to +35 °C; ColdTemp configuration
Modèle de pointage
Up to 100 alignment points; polar, orthogonality and refraction compensation
Commande à distance
Ethernet/Wi-Fi web interface, virtual keypad and compatible computer control
Plage de vitesse de pointage
2–8°/s
Température de stockage
−40 to +50 °C; not the operating range
Tension d'alimentation (V CC)
24
Vitesses de suivi
Sidereal, solar, lunar and custom rates
Transmission
Timing-belt reduction with automatic backlash recovery
Vis sans fin
32 mm; tempered, ground and lapped alloy steel
Roues dentées
RA: 430 teeth, 330 mm diameter; DEC: 315 teeth, 244 mm diameter; B14 bronze
10Micron GM4000 HPS II ColdTemp 10Micron GM4000 HPS II ColdTemp combines the 150 kg instrument capacity of the standard mount with the manufacturer’s special low-temperature configuration. It is a German equatorial HPS mount with absolute on-axis encoders, precision worm gearing and two-axis brushless servo drive.
Manufacturer model: 10Micron GM4000 HPS II ColdTemp · Specifications checked against manufacturer data on 2026-11-04
