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APPENDIX A - TECHNICAL SPECIFICATIONS
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LCM 60 LCM 80 LCM 114
Design Refractor Refractor Reflector
Aperture 60mm 80mm 114mm
Focal Length 700mm 900mm 1000mm
F/ratio of the Optical System 12 11 9
Optical Coatings Fully Coated Fully Coated Aluminum
Highest Useful Magnification 142x 189x 269x
Resolution: Rayleigh Criterion
Dawes Limit
2.31 arc seconds
1.93 arc seconds
1.73 arc seconds
1.45 arc seconds
1.21 arc seconds
1.02 arc seconds
Light Gathering Power 73x unaided eye 131x unaided eye 265x unaided eye
Field of View: Standard Eyepiece 1.6º 1.3º 1.1º
Linear Field of View (at 1000 yds) 84 ft. 66 ft. 59 feet
Eyepiece Magnification: 28x (25mm)
78x (9mm)
36x (25mm)
100x (9mm)
40x (25mm)
167x (6mm)
Optical Tube Length 29 inches 36 inches 18 inches
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Input Voltage 12 V DC Nominal
Batteries Required 8 AA Alkaline
Power Supply Requirements 12 VDC-750 mA (Tip positive)
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Motor: Type
Resolution
DC Servo motors with encoders, both axes
.691 arc sec
Slew speeds Nine slew speeds: 3º /sec, 2º /sec, 1º/sec, .64x, 32x, 16x, 8x, 4x, 2x
Hand Control
Double line, 16 character Liquid Crystal Display
19 fiber optic backlit LED buttons
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Ports RS-232 communication port on hand control
Tracking Rates Sidereal, Solar and Lunar
Tracking Modes Alt-Az, EQ North & EQ South
Alignment Procedures Sky Align, Auto 2-Star, 2-Star, One-Star, Solar System Align
Database 99 user defined programmable object.
Expanded information on over 100 objects
Total Object Database 4,033 Objects
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