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NexStar GT- Standard Equipment and Specifications

NexStar GT 22062
NexStar 60GT
31122
NexStar 76GT
22082
NexStar 80GT
22092
NexStar 102GT
31142
NexStar 114GT
31132
NexStar 130GT
11041
NexStar 4GT
Optical Design
60mm (2.4") Refractor 76mm (3") diameter Newtonian Reflector 80mm (3.1") Refractor 102mm (4") Refractor 114mm (4.5") Reflector 130mm (5.1") Reflector 102mm (4") Maksutov-Cassegrain
Focal Length
700mm f/12 700mm f/9.2 400mm f/5 500mm f/5 1000mm f/9 650mm f/5 1325mm f/13
Finderscope
StarPointer StarPointer StarPointer StarPointer StarPointer StarPointer StarPointer
Mount
Motorized Altazimuth Motorized Altazimuth Motorized Altazimuth Motorized Altazimuth Motorized Altazimuth Motorized Altazimuth Motorized Altazimuth
Eyepiece
1-1/4" – 20mm (35x) 1-1/4" – 25mm (28x) 1-1/4" – 25mm (16x) 1-1/4" – 25mm (20x) 1-1/4" – 25mm (40x) 1-1/4" – 25mm (26x) 1-1/4" – 25mm (53x)
Eyepiece
1-1/4" – 10mm, 4mm (70x/175x) 1-1/4" – 10mm (70x) 1-1/4" – 10mm (40x) 1-1/4" – 10mm (50x) 1-1/4" – 10mm (100x) 1-1/4" – 10mm (65x) 1-1/4" – 10mm (133x)
Star Diagonal
1-1/4" n/a 1-1/4" 1-1/4" n/a n/a 1.25" w/ flip mirror system
Accessory tray
yes yes yes yes yes Deluxe Accessory
Tray w/ HC Holder
n/a
Tripod
Pre-assembled Aluminum Pre-assembled Aluminum Pre-assembled Aluminum Pre-assembled Aluminum Pre-assembled Aluminum Pre-assembled Aluminum n/a
CD ROM
The Sky L1 & NSOL The Sky L1 & NSOL The Sky L1 & NSOL The Sky L1 & NSOL The Sky L1 & NSOL The Sky L1 & NSOL The Sky L1 & NSOL
Hand Control
Fully Computerized Fully Computerized Fully Computerized Fully Computerized Fully Computerized Fully Computerized Fully Computerized
Database
4,000 Object Database 4,000 Object Database 4,000 Object Database 4,000 Object Database 4,000 Object Database 4,000 Object Database 4,000 Object Database
Slew Speeds
Nine slew speeds: 4º/sec, 2º/sec, 1º/sec, .5 /sec, 32x, 16x, 8x, 4x, 2x Nine slew speeds: 4º/sec, 2º/sec, 1º/sec, .5 /sec, 32x, 16x, 8x, 4x, 2x Nine slew speeds: 4º/sec, 2º/sec, 1º/sec, .5 /sec, 32x, 16x, 8x, 4x, 2x Nine slew speeds: 4º/sec, 2º/sec, 1º/sec, .5 /sec, 32x, 16x, 8x, 4x, 2x Nine slew speeds: 4º/sec, 2º/sec, 1º/sec, .5 /sec, 32x, 16x, 8x, 4x, 2x Nine slew speeds: 4º/sec, 2º/sec, 1º/sec, .5 /sec, 32x, 16x, 8x, 4x, 2x Nine slew speeds: 4º/sec, 2º/sec, 1º/sec, .5 /sec, 32x, 16x, 8x, 4x, 2x
Tracking Rates
Sidereal, Solar and Lunar Sidereal Sidereal, Solar and Lunar Sidere Sidereal, Solar and Lunar Sidereal Sidereal, Solar and Lunar Sidereal Sidereal, Solar and Lunar Sidereal Sidereal, Solar and Lunar Sidereal Sidereal, Solar and Lunar Sidereal
 
Highest Useful Magnification
142x 180x 189x 241x 269x 306x 240x
Lowest Useful Magnification
9x 11x 11x 15x 16x 19x 15x
Limiting Stellar Magnitude
11.4 11.9 12 12.5 12.8 13.1 12.5
Resolution: Rayleigh
2.31 arcseconds 1.82 arcseconds 1.73 arcseconds 1.36 arcseconds 1.21 arcseconds 1.06 arcseconds 1.36 arcseconds
Dawes Limit
1.93 arcseconds 1.53 arcseconds 1.45 arcseconds 1.14 arcseconds 1.02 arcseconds 0.89 arcseconds 1.14 arcseconds
Photographic Resolution
156 lines/mm 217 lines/mm 364 lines/mm 408 lines/mm 228 lines/mm 400 lines/mm 140 lines/mm
Light Gathering Power
73x unaided eye 118x unaided eye 131x unaided eye 212x unaided eye 265x unaided eye 345x unaided eye 212x unaided eye
Field of View: Standar Eyepiece
1.4º 1.8º 3.25º 2.5º 1.3º
Linear FOV (@1000 yd.)
75 ft. 95 ft. 171 ft. 131 ft. 68 ft. 105 ft. 52.5 ft.
Optical Coatings
Multi-Coated Aluminum Multi-Coated Multi-Coated Aluminum Aluminum Aluminum/Multi-Coated
Secondary Mirror Obstruction
n/a .85"
n/a n/a 1.6" 1.5" 1.38"
by Area
n/a 28% n/a n/a 13% 9% 11%
by Diameter
n/a 8% n/a n/a 36% 29% 35%
Optical Tube Length
28" 27" 15.5" 21" 19" 24.5" 13.5"
Telescope Weight
9.5 lb. 12 lb. 11 lb. 14 lb. 15 lb. 18 lb. 11 lb.
 
All specifications are subject to change without notice or obligation.
 
©1997-2004 Celestron
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