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Celestron C8-NGT

Celestron C8-NGT

Optical Design : Reflector Aperture : 203.2 mm (8 in) Focal Leng Read more

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Specifications

Feature
Value
Comment
Optical Design :
Reflector
Aperture :
203.2 mm (8 in)
Focal Length :
1000 mm (39.37 in)
Focal Ratio :
4.92
Finderscope :
9x50
Mount :
CG-5 Equatorial
Eyepiece 1 :
20 mm (0.79 in)
Magnification 1 :
50 x
Accessory Tray :
Yes
Tripod :
2 inch Stainless Steel
CD ROM :
"The Sky ® " Level 1
Power Supply :
Car Battery Adapter
Highest Useful Magnification :
480 x
Lowest Useful Magnification :
29 x
Limiting Stellar Magnitude :
14
Resolution (Rayleigh) :
0.69 arcsec
Resolution (Dawes) :
0.57 arcsec
Photographic Resolution :
400 line/mm
Light Gathering Power :
843 x
Angular Field of View :
1 °
Linear Field of View (@1000 yds) :
53 ft (16.15 m)
Optical Coatings :
Aluminum
Secondary Mirror Obstruction :
2.2 in (55.88 mm)
Secondary Mirror Obstruction by Area :
7.6 %
Secondary Mirror Obstruction by Diameter :
27.5 %
Optical Tube Length :
37 in (939.8 mm)
Motor Drive :
DC Servo motors with encoders, both axes
Computer Hand Control :
Double line, 16 character Liquid Crystal Display; 19 fiber optic backlit LED buttons
Slew Speeds :
3°/sec
Tracking Rates :
Sidereal, Solar and Lunar
Tracking Modes :
EQ North and EQ South
Alignment Procedures :
AutoAlign, 2-Star Alignment, Quick Align
Communication Ports :
RS-232 communication port on hand control
Motor Ports :
Aux Port, Autoguide Ports
Database :
40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects
Telescope Weight :
67 lbs (30.39 kg)
Counterweights :
2-11 lbs
Software Precision :
24 bit, 0.08 arcsec calculation
Release Date
First seen
22 July 2008