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
Scheda tecnica
Dimensioni degli assi
RA 85 mm; DEC 80 mm; alloy steel
Regolazione fine in azimut
±10°
Diametro della base nel disegno (mm)
360
Cuscinetti
Preloaded tapered roller and roller-thrust bearings
Gestione dei cavi
Internal through-axis routing; 60 mm passage
Porte di comunicazione
RS-232; GPS; ST-4 autoguide; Ethernet
Diametro dell'asta contrappesi (mm)
60
Materiale dell'asta contrappesi
Stainless steel
Peso dell'asta contrappesi (kg)
13
Contrappesi inclusi
No
Riferimento disegno quotato
At 45°: side height 785 mm; front height 673 mm
Encoder
Absolute on-axis encoders; closed-loop HPS control
Carico strumentale (kg)
150
Pulsantiera
Metal housing; heated dimmable display and backlit keys; standalone operation
Intervallo di latitudine
20–70°
Consumi dichiarati dal produttore
Approximately 1.5 A sidereal tracking; 4 A maximum slew; 5 A peak
Codice produttore
10M4010
Precisione di puntamento dichiarata
Less than 20 arcsec with 25-star model; model supports up to 100 points
Dotazione standard del produttore
GM4000 HPS II Mount; Controlbox; Keypad; Counterweight shaft; Cables set; Allen wrenches; Shipping Kit; Includes the shipping wooden pallet-box and pier adapter.
Esempio di inseguimento del produttore
Approximately 1 arcsec typical over 15 minutes; approximately 0.6 arcsec RMS with a 25-star model and flexure/polar-error compensation
Limiti del meridiano
±30° software; ±45° mechanical in RA
Modello
10Micron GM4000 HPS II ColdTemp
Motori
Two-axis AC brushless servo
Tipo di montatura
German equatorial
Peso della montatura senza accessori (kg)
125
Database di oggetti
Stellar and deep-sky catalogues; solar system objects, comets, asteroids and artificial satellites; user-defined targets
Temperatura di esercizio
−30 to +35 °C; ColdTemp configuration
Modello di puntamento
Up to 100 alignment points; polar, orthogonality and refraction compensation
Controllo remoto
Ethernet/Wi-Fi web interface, virtual keypad and compatible computer control
Intervallo di velocità di puntamento
2–8°/s
Temperatura di conservazione
−40 to +50 °C; not the operating range
Tensione di alimentazione (V CC)
24
Velocità di inseguimento
Sidereal, solar, lunar and custom rates
Trasmissione
Timing-belt reduction with automatic backlash recovery
Viti senza fine
32 mm; tempered, ground and lapped alloy steel
Ruote dentate
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
