Currency: EUR

GM4000 HPS II Mount

Temporarily out of stock


GM4000 HPS II Mount

30 599,00 €

Product description

The GM4000HPS mount, now in the new M2 version, is built for observatories with an instrumentation up to a weight of 150 kg – 330 lbs (excluding counterweights). It is ideal for remotized observation sites, and its loading capacity allows for mounting instruments like 300 mm diameter refractors, 400 mm diameter Newton reflectors, 600 mm diameter Cassegrains and so on. Movements are driven by two servo brushless motors, with timing belt reduction having zero-backlash. Both axes feature a classic worm – wormwheel pairing. The wormwheels are made of bronze (B14), with a diameter of 330 mm and 430 teeth in right ascension, and a diameter of 244 mm and 315 teeth in declination. The worms are made of alloy tempered steel with a diameter of 32 mm. The axes themselves are made of alloy steel, with a diameter of 85 mm (right ascension) and 80 mm (declination), for the maximum rigidity.

The electronics is housed in an easily detachable housing (control box), mounted above the right ascension axis, in order to obtain the best accessibility of all connections. The connections of the mount and keypad secutiry lock screws. Only one cable runs from the control box to the mount. The axes feature a 60 mm diameter hole allowing for the passage of instrumentation cables. This effectively solves the problem of entangling cables and damaging instruments, especially for remote observatories. The mount is powered with low voltage, requiring a maximum power of about 100W. This makes possible using the mount even in locations with limited power available. The GM4000HPS can be controlled completely using the included hand pad, without requiring any external PC.

Product details

TypeGerman Equatorial Mount
Weight (mount)125 kg – 276 lbs without accessories
Instrument payload capacity150 kg – 330 lbs
Latitude range20° – 70°
Azimuth fine adjustment range+/− 10°
Counterweight shaft60 mm diameter, stainless steel, weight 13 kg – 29 lbs
Axesr. a. 85 mm diameter, alloy steel
dec. 80 mm diameter, alloy steel
BearingsPre-loaded tapered roller bearings
Worm wheelsa.r. 430 teeth, 330 mm diameter, B14 bronze
dec. 315 teeth, 244 mm diameter, B14 bronze
Worm gearsdiameter 32mm, tempered alloy steel, grinded and lapped
Transmission systemBacklash-free system with timing belt and automatic backlash recovery
Motors2 axes servo brushless
Power supply24 V DC
Power consumption~ 1,5 A at sidereal speed
~ 4 A at maximum speed
~ 5 A peak
Go-to speedAdjustable from 2°/s to 8°/s (6°/s in a.r.)
Special version 48V DC from 2°/s to 12°/s (10°/s in a.r.)
Pointing accuracy< 20” with internal multiple-stars software mapping
Average tracking accuracy< +/− 1" typical for 15 minutes (< 0.7" RMS)
with internal multiple-stars software mapping and compensation of flexure and polar alignment errors
Security stop+/− 30° past meridian in r.a. (software)
+/− 35° past meridian in r.a. (mechanical)
+/− 170° interval in dec. (software)
+/− 172,5° interval in dec. (mechanical)
Operational temperature range (standard)- 15° C to + 35° C
+ 05° F to + 95° F
Storage temperature range- 40° C to + 50° C
- 40° F to +122° F
Special operational temperature rangeOptional, for very low temperature operations (until -30°C / -22°F): see options for more details
Communication portsRS–232 port; GPS port; autoguide ST-4 protocol port; Ethernet port.
DatabaseStars: by name, Bayer designation, Flamsteed designation, Bright Star Catalogue, SAO, HIP, HD, PPM, ADS, GCVS. Deep-sky: M, NGC, IC, PGC ,UGC limited up to mV = 16. Solar system: Sun, Moon, planets, asteroids, comets, artificial satellites. Equatorial and altazimuth coordinates. User defined objects, fast slewing positions.
Firmware featuresUser defined mount parking position, 2‑stars and 3‑stars alignment function, up to 100 alignment stars for modeling, correction of polar alignment and orthogonality errors, estimate of average pointing error, storage of multiple pointing models, sidereal, solar and lunar tracking speed adjustable on both axes, declination-based autoguide speed correction, adjustable horizon height limit, pointing and tracking past meridian,, assisted balance adjustment, manual or GPS based time and coordinates setting, dome control via RS-232, configurable atmospheric refraction, network settings, comets and asteroids filter, multi-language interface. Remote Assist via Internet connection.
PC controlRemote control via RS-232 or Ethernet; proprietary ASCOM driver or Meade compatible protocol; update of firmware and orbital elements of comets, asteroids and artificial satellites via RS-232 or Ethernet; virtual control panel via RS-232 or Ethernet. Wi-Fi included to control the mount via Tablet, Smartphone etc.

Shipping costs

PostNord Parcel locker
5,90 €
PostNord Home deliver
19,00 €
Environmentally friendly delivery to your door at the agreed time. Trackable deliveries in real time even in the evenings in the biggest cities. Change your delivery as required.
UPS Standard
14,90 €
Delivery to Europe in 2 to 5 days.
5,90 €
12,90 €

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