German Equatorial Mounts

We offer 3 models of German equatorial mounts: MI-500G, MI-750G, and MI-1000G. Each mount consists of a polar assembly and a declination assembly. The conical polar assembly houses the right ascension axis, drive gear, and servo motor. The declination assembly bolts to the top on the RA axis, and it includes the declination axis, drive, gear and motor. The counter-weight shaft and counter-weight attach to the bottom of the declination assembly.

Polar Assembly Specifications

Model

MI-500 & MI-500/750

MI-750 & MI-750/1000

MI-1000 & MI-1000/1250

Base Plate
10.5 inches round
14.0 inches round
15-inches x 21 inches
Altitude Adjustment
8 degrees
6 degrees
6 degrees
Azimuth Adjustment
8 degrees
6 degrees
5 degrees
Latitude Range
25 to 56 degrees
25 to 56 degrees
25 to 56 degrees
RA Gear Dimensions
12.1 inch diameter, 360 teeth,
bronze or aluminum
15.1 inch diameter, 450 teeth,
bronze or aluminum
20.1 inch diameter, 600 teeth, bronze
Worm Dimensions
1.20 diameter, stainless steel,
30 diametrical pitch
1.50 diameter, stainless steel,
30 diametrical pitch
Diameter of RA axis
100mm
130mm
160mm
North Bearing
100mm x150mm
130mm x 180mm
160mm x 220mm
Height
16 inches
21 inches
28 inches
Payload
250 lbs, 114 Kg
180 lbs recommended
350 lbs, 160 Kg
280 lbs recommended
500 lbs, 227 Kg
400 lbs recommended
Weight
100 pounds, 45 Kg
140 pounds, 64 Kg
220 pounds, 100 Kg
Color
White with Blue Tint
White with Blue Tint
White with Blue Tint

 

MI-500G

MI-750G

MI-1000G

Declination Specifications

Model
MI-500
MI-750
MI-1000
Flange Diameter
5.5 inches
6 inches
6.5 inches
Upper axis diameter
7 inches
8 inches
10 inches
Declination Gear Dimensions
10.1 inch diameter, 300 teeth,
aluminum
12.1 inch diameter, 360 teeth,
bronze or aluminum
15.1 inch diameter, 450 teeth,
bronze or aluminum
Worm Dimensions
1.20 diameter, stainless steel,
30 diametrical pitch
Diameter of Dec Axis
2.5 inches
3 inches
4 inches
Upper Bearing
80mm x 100mm
100mm x 125mm
120mm x 150mm
OTA Interface
dovetail
dovetail
dovetail or custom plate
Overall Length
24 inches
30 inches
40 inches
Weight
90 pounds
125 pounds
180 pounds
Color
White with Blue Tint
White with Blue Tint
White with Blue Tint


The MI-1000, MI-750, MI-500, and MI-400 Declination Assemblies