APPENDIX A - TECHNICAL SPECIFICATIONS
Opttiicall Speciiffiicattiion
| NexStar 60mm | NexStar 80mm | NexStar 102mm | NexStar 114mm | NexStar 130mm |
Design | Refractor | Refractor | Refractor | Reflector | Reflector |
Aperture | 60mm | 80mm | 102mm | 114mm | 130mm |
Focal Length | 700mm | 900mm | 660mm | 1000mm | 650mm |
F/ratio of the Optical System | 12 | 11 | 6.5 | 9 | 5 |
Optical Coatings | Fully Coated | Fully Coated | Multi Coated | Aluminum | Aluminum |
Highest Useful Magnification | 175x | 189x | 240x | 269x | 306x |
Resolution: Rayleigh Criterion | 2.31 arc seconds | 1.73 arc seconds | 1.36 arc seconds | 1.21 arc seconds | 1.06 arc seconds |
Dawes Limit | 1.93 arc seconds | 1.45 arc seconds | 1.14 arc seconds | 1.02 arc seconds | .89 arc seconds |
Light Gathering Power | 73x unaided eye | 131x unaided eye | 212x unaided eye | 265x unaided eye | 345x unaided eye |
Field of View: Standard Eyepiece | 1.6º | 1.3º | 1.7º | 1.1º | 1.7º |
Linear Field of View (at 1000 | 84feet | 66 feet | 91 feet | 59 feet | 91 feet |
yds) |
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Eyepiece Magnification: | 28x (25mm) | 36x (25mm) | 26x (25mm) | 40x (25mm) | 26x (25mm) |
| 78x (9mm) | 100x (9mm) | 73x (9mm) | 111x (9mm) | 62x (9mm) |
Optical Tube Length | 28 inches | 34 inches | 23 inches | 19 inches | 21 inches |
Electronic Specifications |
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Input Voltage |
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| 12 | V DC Nominal |
Batteries Required |
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| 8 AA Alkaline | ||
Power Supply Requirements |
| 12 | |||
Mechaniicall Speciifiicatiions
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
Software Specifications | ||
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Software Precision |
| 16 bit, 20 arc sec. calculations |
Ports |
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Tracking Rates |
| Sidereal, Solar and Lunar |
Tracking Modes |
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Alignment Procedures |
| Sky Align, Auto |
Database |
| 99 user defined programmable object. |
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| Expanded information on over 100 objects |
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Total Object Database |
| 4,033 Objects |
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