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

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NexStar GPS- Standard Equipment and Specifications

NexStar GPS	11056 NexStar 9 1/4 GPS	11053 NexStar 11 GPS
Optical Design	9.25" Schmidt-Cassegrain	11" Schmidt-Cassegrain
Focal Length	2350mm f/10	2800mm f/10
Finderscope	9x50	9x50
Mount	Dual Fork Arm	Dual Fork Arm
Optical Tube	Carbon Fiber	Carbon Fiber
Fastar Compatible	No	Yes
Eyepiece	1-1/4" – 40mm Plössl (59x)	1-1/4" – 40mm Plössl (70x)
Star Diagonal	1-1/4"	1-1/4"
Tripod	Heavy Duty Adjustable	Heavy Duty Adjustable
AC Adapter	Included	Included
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
Hand Control Ports	RS-232 communication port on hand control	RS-232 communication port on hand control
Motor Ports	Aux Port, Autoguide Ports	Aux Port, Autoguide Ports
Database	40,000 Object Database	40,000 Object Database
GPS	16 channel	16 channel

Motor: Type	DC Servo motors with encoders, both axes	DC Servo motors with encoders, both axes
Resolution	.1125 arcsecond	.1125 arcsecond
Slew Speeds	Nine slew speeds: 3º/sec, 2º/sec, .5º/sec, 64x, 16x, 8x, 4x, 1x, .5x	Nine slew speeds: 3º/sec, 2º/sec, .5º/sec, 64x, 16x, 8x, 4x, 1x, .5x
Software precision	24bit, 0.08 arcsec calculations	24bit, 0.08 arcsec calculations
Tracking Rates	Sidereal, Solar and Lunar	Sidereal, Solar and Lunar
Tracking Modes	Altazimuth, EQ North & EQ South	Altazimuth, EQ North & EQ South
Alignment Procedures	AutoAlign, 2-Star Alignment, Quick Align	AutoAlign, 2-Star Alignment, Quick Align
Highest Useful Magnification	555x	660x
Lowest Useful Magnification	34x	40x
Limiting Stellar Magnitude	14.4	14.7
Resolution: Rayleigh	.59 arcseconds	.50 arcseconds
Dawes Limit	.49 arcseconds	.42 arcseconds
Photographic Resolution	200 lines/mm	200 lines/mm
Light Gathering Power	1127x unaided eye	1593x unaided eye
Field of View: Standar Eyepiece	.73º	.61º
Linear FOV (@1000 yd.)	38 ft	32 ft.
Optical Coatings	StarBright Coating	StarBright Coating
Secondary Mirror Obstruction	3.35"	3.75"
by Area	13%	12%
by Diameter	36%	34%
Optical Tube Length	22"	23"
Telescope Weight	58 lb.	65 lb.
Tripod/Mount Weight	19 lb.	19 lb.

All specifications are subject to change without notice or obligation.