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Phillips 24" Telescope

Elevation: 2776 m = 9108 ft.
Latitude: 32° 26' 31.42" N
Longitude: 110° 47' 19.61" W
these coordinates are accurate to about 1".
Time Zone: +7 hours 
Primary Mirror Diameter: 0.61 m = 24 inches
f/7.8 Cassegrain focus
Plate Scale: 23.1 microns/arcsec = 43.4 arcsec/mm (nominal)
Typical Seeing: 1-2"

RA Axis

Motor: Pittman Elcom II 5433E021
Gearbox: APEX Dynamics AB060-S2-P1
Transmission gear: 32 teeth
Worm Gear:

New Motor: Teknic CPM-SDHP-2321S-ELS
RA Gear: Byer's 20 inch Research Grade RA gear (640 teeth)
Steps per Revolution: 40,960,000 (new motor)

DEC Axis

Motor: Pittman Elcom II 5433E021
Gearbox: APEX Dynamics AB060-S2-P1
Transmission gear: 32 teeth
Worm Gear:
RA Gear: Byer's 15 inch Research Grade DEC gear (360 teeth)