Orion SKYQUEST XTG - Manual (Page 27)

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SkyQuest XT12g
Primary mirror: 305mm diameter, parabolic, center-marked
Focal length: 1500mm
Focal ratio: f/4.9
Focuser: Dual-speed Crayford (11:1), accepts 2" and 1.25"
eyepieces
Optical tube material: Rolled steel
Azimuth bearing: Thrust needle bearing
Altitude bearing: Ball bearing
Eyepieces: 28mm DeepView, 2" barrel, 12.5mm Illuminated Plössl,
1.25" barrel
Eyepiece magnifications: 53x and 120x
Finder scope: EZ Finder II Reflex Sight
Eyepiece rack: Holds three 1.25" eyepieces and one 2" eyepiece
Mirror coatings: Enhanced aluminum with SiO
2
overcoat
Minor axis of secondary mirror: 70mm
Optical tube weight: 48.9 lbs.
Base weight: 52.9 lbs.
Tube length: 58"
Tube outer diameter: 14"
Motor drives: Dual-axis GoTo computerized, internally housed
Operation: Northern or Southern hemisphere
Power requirement: 12V DC 2.1 Amp (tip positive)
Motor type: DC servo with optical encoders for altitude and azimuth
axes
Slew speeds: Rate 0 = 1.0X
Rate 1 = 2X
Rate 2 = 16X
Rate 3 = 32X
Rate 4 = 50X
Rate 5 = 200X
Rate 6 = 400X
Rate 7 = 600X
Rate 8 = 800X
Rate 9 = 1000X
Tracking rates: Sidereal (default), Lunar, Solar.
Alignment method: Brightest Star, Two-Star
Database: Over 42,900 objects including:
Complete Messier & Caldwell catalogs, 7840 NGC objects, 5386
IC objects, 29523 SAO stars, 8 planets, moon, 212 named stars,
55 well-known double stars, 20 well-known variable stars, 25 user-
defined objects.