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

Celestron C8-NGT