Appendix A – Technical Specifications
Advanced Series | 11071/11072 |
| 11025/11026 | 11045/11046 | |
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Specifications: |
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Optical Design | 127mm(5") |
| 203mm (8") | 235mm (9.25") | |
Focal Length | 1250mm F/10 |
| 2032mm F/10 | 2350mm F/10 | |
Finderscope |
| 6x30 |
| 6x30 | 6x30 |
Mount |
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Eyepiece | 25mm Plossl (50x) |
| 25mm Plossl (81x) | 25mm Plossl (94x) | |
Star Diagonal | 1.25" |
| 1.25" | 1.25" | |
Accessory tray |
| Yes |
| Yes | Yes |
Tripod | 2" Stainless Steel |
| 2" Stainless Steel | 2" Stainless Steel | |
Technical Specs |
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Highest Useful Magnication |
| 300x |
| 480x | 555x |
Lowest Useful Magnification |
| 18x |
| 29x | 34x |
Limiting Stellar Magnitude | 13 |
| 14 | 14.4 | |
Resolution: Rayleigh | 1.1arc seconds |
| .68 arc seconds | .59 arc seconds | |
Dawes Limit | .91 arc seconds |
| .57 arc seconds | .49 arc seconds | |
Photographic Resolution |
| 200 line/mm |
| 200 line/mm | 200 line/mm |
Light Gathering Power | 329x unaided eye |
| 843x unaided eye | 1127x unaided eye | |
Field of View: standard eyepiece | 1º |
| .64º | .55º | |
Linear FOV (@1000 yds) |
| 52.5 ft. |
| 33.6 ft. | 29 ft. |
Optical Coatings - Standard | Starbright Coating |
| Starbright Coating | Starbright Coating | |
Secondary Mirror Obstruction | 1.75" |
| 2.7" | 3.35" | |
by Area | 12% |
| 11% | 13% | |
by Diameter | 35% |
| 34% | 36% | |
Optical tube length |
| 14 inches |
| 17 inches | 22 inches |
Telescope Weight |
| 48 lbs |
| 54.5 lbs | 73 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 |
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Max Slew Speed |
| 3º/second |
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Software Precision |
| 24bit, 0.08 arcsec calculation |
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Hand Control Ports |
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Motor Ports |
| Aux Port, Autoguide Ports |
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Tracking Rates |
| Sidereal, Solar and | Lunar |
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Tracking Modes |
| EQ North & EQ South |
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Alignment Procedures |
| AutoAlign, |
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Database |
| 40,000+ objects, 400 user defined programmable objects. | |||
| Enhanced information on over 200 objects |
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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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