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OPTICAL DESIGN  |
8" Schmidt-Cassegrain |
9.25" Schmidt-Cassegrain |
11" Schmidt-Cassegrain |
N/A
|
APERTURE  |
203.2 mm (8 in) |
235 mm (9.25 in) |
280 mm (11.02 in) |
N/A
|
FOCAL LENGTH  |
2032 mm (80 in) |
2350 mm (92.52 in) |
2800 mm (110.24 in) |
N/A
|
FOCAL RATIO  |
10 |
10 |
10 |
N/A
|
FINDERSCOPE  |
6x30 |
6x30 |
9x50 |
N/A
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MOUNT  |
Computerized Equatorial |
Computerized Equatorial |
Computerized Equatorial |
Computerized Equatorial |
OPTICAL TUBE  |
Aluminum |
Aluminum |
Aluminum |
N/A
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OPTICAL COATINGS  |
Starbright XLT Coating |
Starbright XLT Coatings |
Starbright XLT Coatings |
N/A
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EYEPIECE 1  |
25 mm (0.98 in) |
25 mm (0.98 in) |
40 mm (1.57 in) |
N/A
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MAGNIFICATION 1  |
81 x |
94 x |
70 x |
N/A
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STAR DIAGONAL  |
1.25 |
1.25 |
1.25 |
N/A
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TRIPOD  |
Adjustable, Stainless Steel |
Adjustable, Stainless Steel |
Adjustable, Stainless Steel |
Adjustable, Stainless Steel |
CD ROM  |
NexRemote control software with RS232 cable |
NexRemote control software with RS232 cable |
NexRemote control software with RS232 cable |
NexRemote control software with RS232 cable |
POWER SUPPLY  |
Car battery adapter |
Car battery adapter |
Car battery adapter |
Car battery adapter |
HIGHEST USEFUL MAGNIFICATION  |
480 x |
555 x |
661 x |
N/A
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LOWEST USEFUL MAGNIFICATION  |
29 x |
34 x |
40 x |
N/A
|
LIMITING STELLAR MAGNITUDE  |
14 |
14.4 |
14.7 |
N/A
|
EYEPIECE 1 FIELD OF VIEW  |
0.62 ° |
0.53 ° |
0.71 ° |
N/A
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LIGHT GATHERING POWER  |
843 x |
1127 x |
1600 x |
N/A
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ANGULAR FIELD OF VIEW  |
0.62 ° |
0.53 ° |
0.71 ° |
N/A
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SECONDARY MIRROR OBSTRUCTION  |
2.7 in (68.58 mm) |
3.35 in (85.09 mm) |
3.75 in (95.25 mm) |
N/A
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SECONDARY MIRROR OBSTRUCTION BY AREA  |
11.4 % |
13.1 % |
11.6 % |
N/A
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SECONDARY MIRROR OBSTRUCTION BY DIAMETER  |
33.8 % |
36.2 % |
34 % |
N/A
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RESOLUTION (RAYLEIGH)  |
0.69 arcsec |
0.59 arcsec |
0.5 arcsec |
N/A
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RESOLUTION (DAWES)  |
0.57 arcsec |
0.49 arcsec |
0.41 arcsec |
N/A
|
GEAR  |
Steel worm gear and 90mm pitch diameter brass worm wheel |
Steel worm gear and 90mm pitch diameter brass worm wheel |
Steel worm gear and 90mm pitch diameter brass worm wheel |
N/A
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MOTOR DRIVE  |
Low cog DC Servo motors with encoders, both axes |
Low cog DC Servo motors with encoders, both axes |
Low cog DC Servo motors with encoders, both axes |
Low cog DC Servo motors with encoders, both axes |
COMPUTER HAND CONTROL  |
Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons |
Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons |
Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons |
Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons |
SLEW SPEEDS  |
Nine slew speeds: 5 °/sec, 2 °/sec, 1 °/sec, 64x, 16x, 8x, 4x, 1x, .5x |
Nine slew speeds: 5°/sec, 2°/sec, 1°/sec, 64x, 16x, 8x, 4x, 1x, .5x |
Nine slew speeds: 5 °/sec, 2 °/sec, 1 °/sec, 64x, 16x, 8x, 4x, 1x, .5x |
Nine slew speeds: 5 °/sec, 2 °/sec, 1 °/sec, 64x, 16x, 8x, 4x, 1x, .5x |
TRACKING RATES  |
Sidereal, Solar and Lunar |
Sidereal, Solar and Lunar |
Sidereal, Solar and Lunar |
Sidereal, Solar and Lunar |
TRACKING MODES  |
EQ North and EQ South |
EQ North and EQ South |
EQ North and EQ South |
EQ North and EQ South |
ALIGNMENT PROCEDURES  |
2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align |
2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align |
2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align |
AutoAlign, 2-Star Align, Quick Align, 1-Star Align, Last Alignment, Solar System Align |
SOFTWARE PRECISION  |
24bit, 0.08 calculation |
24bit, 0.08 calculation |
24bit, 0.08 calculation |
24bit, 0.08 calculation |
DATABASE  |
40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects |
40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects |
40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects |
40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects |
POWER REQUIREMENTS  |
12 VDC 1.5 Amp |
12 VDC 1.5 Amp |
12 VDC 1.5A |
12 VDC 1.5 Amp |
GPS  |
Optional CN16 Accessory |
Optional CN16 Accessory |
Optional CN16 GPS Accessory |
Optional CN-16 GPS Accessory |
COUNTERWEIGHTS  |
1 x 17 lb |
1 x 11 lb 1 x 17 lb |
2 x 17 lb |
1 x 17 lb |
OPTICAL TUBE LENGTH  |
17 in (431.8 mm) |
22 in (558.8 mm) |
24 in (609.6 mm) |
N/A
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TELESCOPE WEIGHT  |
88 lb (39.92 kg) |
113 lb (51.26 kg) |
120 lb (54.43 kg) |
N/A
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TRIPOD WEIGHT  |
N/A
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N/A
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N/A
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17 lb (7.71 kg) |
MOUNT WEIGHT  |
N/A
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N/A
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N/A
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41 lb (18.6 kg) |
PAYLOAD CAPACITY  |
N/A
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N/A
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N/A
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40 lb (18.14 kg) |
| LATITUDE RANGE |
N/A
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N/A
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N/A
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15-70 degrees |
WEIGHT  |
N/A
|
N/A
|
N/A
|
75 lb (34.02 kg) |