Celestron Telescopes -- NexStar i Series -- Standard Equipment and Specifications

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NexStar i- Standard Equipment and Specifications

NexStar i	11034 NexStar 5i	11022 NexStar 8i
Optical Design	5" Schmidt-Cassegrain	8" Schmidt-Cassegrain
Focal Length	1250mm f/10	2032mm f/10
Finderscope	StarPointer	StarPointer
Mount	Altazimuth, Fork Arm	Altazimuth, Fork Arm
Motor Drive	Integrated Dual Axis Servo	Integrated Dual Axis Servo
Optical Tube	Aluminum	Aluminum
Eyepiece	1-1/4" – 25mm Plössl (50x)	1-1/4" – 25mm Plössl (81x)
Star Diagonal	1-1/4"	1-1/4"
Slew Speeds	6º/sec, 2º/sec, 128x, 64x, 16x, 8x	6º/sec, 2º/sec, 128x, 64x, 16x, 8x
Tracking Modes	Alt-Az, EQ North, EQ South, Off	Alt-Az, EQ North, EQ South, Off
Hand Control	Computerized Hand Control	Computerized Hand Control

Computerized Hand Control
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
Slew speeds	Nine slew speeds: 6º/sec, 3º/sec, 1.5º/sec, 128x, 64x, 16x, 8x, 2x, 1x	Nine slew speeds: 6º/sec, 3º/sec, 1.5º/sec, 128x, 64x, 16x, 8x, 2x, 1x
Software Precision	24bit, 0.08 arcsec calculations	24bit, 0.08 arcsec calculations
Ports	RS-232 communication port on hand control	RS-232 communication port on hand control
Tracking Rates	Sidereal, Solar and Lunar	Sidereal, Solar and Lunar
Tracking Modes	Alt-Az, EQ North & EQ South	Alt-Az, EQ North & EQ South
Alignment Procedures	2-Star Alignment, AutoAlign, EQ North/South and GPS Align (with optional CN16 GPS Accessory)	2-Star Alignment, AutoAlign, EQ North/South and GPS Align (with optional CN16 GPS Accessory)
Database	40,000+ objects; 400 user defined programmable objects; enhanced information on over 200 objects	40,000+ objects; 400 user defined programmable objects; enhanced information on over 200 objects
Power Requirements (Telescope and Computerized Hand Control)	12VDC 1.5A	12VDC 1.5A
Idle Current	170mA	170mA
Slew One Axis	360mA	360mA
Slew Both Axes	600mA (with 1A spikes)	600mA (with 1A spikes)
Power Requirements of the Optional CN-16 GPS Accessory	120mA	120mA

Highest Useful Magnification	300x	480x
Lowest Useful Magnification	18x	29x
Limiting Stellar Magnitude	13	14
Resolution: Rayleigh	1.1 arcseconds	.68 arcseconds
Dawes Limit	.91 arcseconds	.57 arcseconds
Photographic Resolution	200 lines/mm	200 lines/mm
Light Gathering Power	329x unaided eye	843x unaided eye
Field of View: Standar Eyepiece	1º	.63º
Linear FOV (@1000 yd.)	52.5 ft.	33 ft.
Optical Coatings	StarBright Coating	StarBright Coating
Secondary Mirror Obstruction	1.75"	2.5"
by Area	12%	10%
by Diameter	35%	31%
Optical Tube Length	11"	17"
Power Requirements	12VDC 1.5A	12VDC 1.5A
Telescope Weight	17.6 lb.	24 lb.

All specifications are subject to change without notice or obligation.