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APPENDIX A - TECHNICAL SPECIFICATIONS
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Design
Aperture
Focal Length
F/ratio of the Optical System
Optical Coatings
Highest Useful Magnification
Resolution: Rayleigh Criterion
Dawes Limit
Light Gathering Power
Field of View: Standard Eyepiece
Linear Field of View (at 1000
yds)
Eyepiece Magnification:
Optical Tube Length
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Input Voltage
Batteries Required
Power Supply Requirements
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Motor: Type
Resolution
Slew speeds
Hand Control
Fork Arm
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Software Precision
Ports
Tracking Rates
Tracking Modes
Alignment Procedures
Database
Total Object Database
NexStar 90mm
Maksutov-Cassegrain
90mm
1250mm
14
Fully Coated
213x
1.55 arc seconds
1.29 arc seconds
165x unaided eye
1º
53feet
50x (25mm)
139x (9mm)
10 inches
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NexStar 127mm
Maksutov-Cassegrain
127mm
1500mm
12
Fully Coated
300x
1.1 arc seconds
.91 arc seconds
329x unaided eye
.83º
44 feet
60x (25mm)
167x (9mm)
12 inches
12 V DC Nominal
8 AA Alkaline
12 VDC-750 mA (Tip positive)
DC Servo motors with encoders, both axes
.26 arc sec
Nine slew speeds: 3º /sec, 2º /sec, 1º/sec, .64x, 32x, 16x, 8x, 4x, 2x
Double line, 16 character Liquid Crystal Display
19 fiber optic backlit LED buttons
Cast aluminum
16 bit, 20 arc sec. calculations
RS-232 communication port on hand control
Sidereal, Solar and Lunar
Alt-Az, EQ North & EQ South
Sky Align, Auto 2-Star, 2-Star, One-Star, Solar System Align
99 user defined programmable object.
Expanded information on over 200 objects
4,033 Objects
34
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