APPENDIX A - TECHNICAL SPECIFICATIONS
OPTICAL SPECIFICATIONS
Design Refractor
Aperture 60 mm
Focal Length 700 mm
F/ratio of the Optical System 12
Optical Coatings Fully Coated
Highest Useful Magnification 142x
Resolution: Rayleigh Criterion 2.31 arc seconds
Dawes Limit 1.93 arc seconds
Light Gathering Power 73x unaided eye
Field of View: Standard Eyepiece 1.5º
Linear Field of View (at 1000 yds) 79 feet
Eyepiece Magnification 28x (25 mm)
78x (9 mm)
Optical Tube Length 29 inches
SOFTWARE SPECIFICATIONS
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 Two-Star, Two-Star, One-Star, Solar System Align
Database 99 user defined programmable objects;
Expanded information on over 100 objects
ELECTRONIC SPECIFICATIONS
Input Voltage 12 V DC Nominal
Batteries Required 8 AA Alkaline
Power Supply
Requirements 12 VDC-750 mA (Tip positive)
MECHANICAL SPECIFICATIONS
Motor: Type / Resolution DC Servo motors with
encoders, both axes
/ 0.691 arc seconds
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
14
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