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APPENDIX A - TECHNICAL SPECIFICATIONS
O
Oppttiiccaall S
Sppeecciiffiiccaattiioonn
Design
Aperture
Focal Length
F/ratio of the Optical System
Objective Coatings
Highest Useful Magnification
Lowest 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
NexStar 60mm
Refractor
60mm
700mm
12
Multi Coated
175x
20x
NexStar 80mm
Refractor
80mm
400mm
5
Multi Coated
189x
11x
NexStar 102mm
Refractor
102mm
500mm
5
Multi Coated
241x
15x
NexStar 76mm
Reflector
76mm
700mm
9.2
Aluminum
180x
11x
NexStar 114mm
Reflector
114mm
1000mm
9
Aluminum
269x
16x
NexStar 130mm
Reflector
130mm
650mm
5
Aluminum
306x
19x
2.31 arc seconds
1.93 arc seconds
73x unaided eye
1.4º
75 feet
1.73 arc seconds
1.45 arc seconds
131x unaided eye
3.25º
171 feet
1.36 arc seconds
1.14 arc seconds
212x unaided eye
2.5º
131 feet
1.82 arc seconds
1.53 arc seconds
118x unaided eye
1.8º
95 feet
1.21 arc seconds
1.02 arc seconds
265x unaided eye
1.25º
66 feet
1.06 arc seconds
.89 arc seconds
345x unaided eye
2º
105 feet
35x (20mm)
70x (10mm)
175x (4mm)
28 inches
16x (25mm)
40x (10mm)
20x (25mm)
50x (10mm)
28x (25mm)
70x (10mm)
40x (25mm)
100x (10mm)
26x (25mm)
65x (10mm)
15.5 inches
21 inches
27 inches
19 inches
24.5 inches
E
Elleeccttrroonniicc S
Sppeecciiffiiccaattiioonnss
Input Voltage
Maximum
Minimum
Batteries Required
Power Supply Requirements
12 V DC Nominal
18 V DC Max.
8 V DC Min.
8 AA Alkaline
12 VDC-750 mA (Tip positive)
M
Meecchhaanniiccaall S
Sppeecciiffiiccaattiioonnss
Motor: Type
Resolution
Slew speeds
Hand Control
Fork Arm
DC Servo motors with encoders, both axes
.26 arc sec
Nine slew speeds: 4º /sec, 2º /sec, 1º/sec, .5 /sec, 32x, 16x, 8x, 4x, 2x
Double line, 16 character Liquid Crystal Display
19 fiber optic backlit LED buttons
Cast aluminum
S
Sooffttw
waarree S
Sppeecciiffiiccaattiioonnss
Software Precision
Ports
Tracking Rates
Tracking Modes
Alignment Procedures
Database
16 bit, 20 arc sec. calculations
RS-232 communication port on hand control
Sidereal, Solar and Lunar
Alt-Az, EQ North & EQ South
AutoAlign, 2-Star Alignment, Quick-Align
25 user defined programmable object.
Enhanced information on over 100 objects
Total Object Database
4,033 Objects
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