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
Technische Daten
Achsabmessungen
RA 85 mm; DEC 80 mm; alloy steel
Azimut-Feineinstellung
±10°
Basisdurchmesser laut Zeichnung (mm)
360
Lager
Preloaded tapered roller and roller-thrust bearings
Kabelführung
Internal through-axis routing; 60 mm passage
Kommunikationsanschlüsse
RS-232; GPS; ST-4 autoguide; Ethernet
Durchmesser der Gegengewichtsstange (mm)
60
Material der Gegengewichtsstange
Stainless steel
Gewicht der Gegengewichtsstange (kg)
13
Gegengewichte enthalten
No
Referenz Maßzeichnung
At 45°: side height 785 mm; front height 673 mm
Encoder
Absolute on-axis encoders; closed-loop HPS control
Instrumentenlast (kg)
150
Handsteuerbox
Metal housing; heated dimmable display and backlit keys; standalone operation
Breitengradbereich
20–70°
Stromwerte laut Hersteller
Approximately 1.5 A sidereal tracking; 4 A maximum slew; 5 A peak
Herstellerteilenummer
10M4010
Positioniergenauigkeit laut Hersteller
Less than 20 arcsec with 25-star model; model supports up to 100 points
Standard-Lieferumfang des Herstellers
GM4000 HPS II Mount; Controlbox; Keypad; Counterweight shaft; Cables set; Allen wrenches; Shipping Kit; Includes the shipping wooden pallet-box and pier adapter.
Nachführbeispiel des Herstellers
Approximately 1 arcsec typical over 15 minutes; approximately 0.6 arcsec RMS with a 25-star model and flexure/polar-error compensation
Meridiangrenzen
±30° software; ±45° mechanical in RA
Modell
10Micron GM4000 HPS II ColdTemp
Motoren
Two-axis AC brushless servo
Montierungstyp
German equatorial
Gewicht der Montierung ohne Zubehör (kg)
125
Objektdatenbank
Stellar and deep-sky catalogues; solar system objects, comets, asteroids and artificial satellites; user-defined targets
Betriebstemperatur
−30 to +35 °C; ColdTemp configuration
Pointing-Modell
Up to 100 alignment points; polar, orthogonality and refraction compensation
Fernsteuerung
Ethernet/Wi-Fi web interface, virtual keypad and compatible computer control
Schwenkgeschwindigkeitsbereich
2–8°/s
Lagertemperatur
−40 to +50 °C; not the operating range
Versorgungsspannung (V DC)
24
Nachführgeschwindigkeiten
Sidereal, solar, lunar and custom rates
Transmission
Timing-belt reduction with automatic backlash recovery
Schnecken
32 mm; tempered, ground and lapped alloy steel
Schneckenräder
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
