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EM-500 Temma-2 specifications

Main specifications

Spec. EM-500 Temma-2
Type German Equatorial Mount
R.A. slow-motion Motor driven
DEC. slow-motion Motor driven
Azimuth adjustments ± 15° (rotary base plate supplied)
Elevation adjustments 20° to 50°
Polar finder / Accuracy Built-in / 2'
R.A. setting circles accuracy 10"
DEC. setting circles accuracy
Encoders Supplied
Weight 45 kg
Counterweights 2 x 10.5 kg
Maximum loading capacity 45 kg (without counterweight)
Optimum loading capacity 30 kg (without counterweight)
Operating voltage 12V / 24V DC
Power consumption @12VDC : 0.52A (NS, sidereal rate and tracking speeds) ; 1.4A (HS, pointing speed)
@24VDC : 0.39A (NS, sidereal rate and tracking speeds) ; 1.55A (HS, pointing speed)
Tube mouting With TMP0210 or TFK2210 plates, 2 x M8 screws (35mm)
Mounting capacities Tube rings, plates and dovetail mounting plates
Option Short and long stand piers

EM-500 EQ mount schema

EM-500 EQ mount schema

Mecanical specifications

Spec. EM-500 Temma-2
R.A. axis diameter (material) 50 mm (bronze)
R.A. worm gear shaft diameter (material) 25 mm (iron)
R.A. gear diameter (material) 149 mm/144 teeth (bronze)
DEC. axis diameter (material) 50 mm (aluminium)
DEC. worm gear shaft diameter(material) 25 mm (brass)
DEC. gear diameter (material) 149 mm/144 teeth (bronze)

Motor Drive Specifications

Spec. EM-500 Temma-2
Type Temma-2
Stepper motor accuracy 115 pps
Slow motion speeds R.A. : 0.1x to 1.9x sidereal rate
Dec. : ± 1.5' to; 13.5' (by increment of 1.5'/sec)
High speed mode @12V. : 260x sidereal rate (R.A. and DEC.)
@24V. : 520x sidereal rate (R.A. and DEC.)
Worm gear shaft cycle 10 minutes
Tracking accuracy ± 3.5"
Autoguiding SBIG compatible (with mini-DIN PS2 connector)
PC connectivity RS-232 serial port (with S-VHS to DB-9 cable, supplied)