Appendix A – Technical Specifications
Advanced Series | 21019 / 21020 |
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Specifications: |
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Optical Design | 150mm (6.0") refractor |
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Focal Length | 1200mm F/8 |
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Finderscope |
| 9x50 |
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Mount |
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Eyepiece | 20mm – 1.25" (60x) |
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Accessory tray |
| Yes |
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Tripod | 2" Stainless Steel |
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Technical Specs |
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Highest Useful Magnification |
| 360x |
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Lowest Useful Magnification |
| 21x |
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Limiting Stellar Magnitude | 13.4 |
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Resolution: Rayleigh | .92 arc seconds |
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Dawes Limit | .77 arc seconds |
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Photographic Resolution | 227 lines/mm |
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Light Gathering Power | 459x unaided eye |
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Field of View: standard eyepiece | .83º |
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Linear FOV (@1000 yds) |
| 43.8 ft |
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Optical Coatings - Standard |
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Optical tube length | 50.5" |
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Telescope Weight |
| 75 lbs |
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Advanced GT |
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Additional Specifications |
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Hand Control |
| Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons | |
Motor: Type |
| DC Servo motors with encoders, both axes | |
Max Slew Speed |
| 3º/second | |
Software Precision |
| 24bit, 0.08 arc sec calculation | |
Hand Control Ports |
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Motor Ports |
| Aux Port, Autoguide Ports | |
Tracking Rates |
| Sidereal, Solar and Lunar | |
Tracking Modes |
| EQ North & EQ South | |
Alignment Procedures |
| AutoAlign, | |
Database |
| 40,000+ objects, 400 user defined programmable objects. | |
| Enhanced information on over 200 objects | ||
Complete Revised NGC Catalog |
| 7,840 |
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Complete Messier Catalog |
| 110 |
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Complete IC Catalog |
| 5,386 |
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Complete Caldwell |
| 109 |
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Abell Galaxies |
| 2,712 |
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Solar System objects |
| 9 |
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Famous Asterisms |
| 20 |
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Selected CCD Imaging Objects |
| 25 |
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Selected SAO Stars |
| 29,500 |
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Total Object Database |
| 45,492 |
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