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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
