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Celestron C11-SGT User Manual Page 45

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Advanced Specifications 43
Advanced Item # 31054 21020 11026-XLT 31062 11046-XLT 11048 11067-XLT
Model Name C6-NGT C6-RGT C8-SGT C8-NGT C9.25-SGT C10-NGT C11-SGT
Optical Design Reflector Refractor Schmidt-Cassegrain Reflector Schmidt-Cassegrain Reflector Schmidt-Cassegrain
Aperture 150 mm (6”) 150 mm (6”) 203 mm (8”) 200 mm (8”) 235 mm (9.25”) 254 mm (10”) 279 mm (11”)
Focal Length / Focal Ratio 750 mm / f/5 1200 mm / f/8 2032 mm / f/10 1000 mm / f/5 2350 mm / f/10 1200 mm / f/4.7 2800 mm / f/10
Eyepiece 20 mm (38x) 20 mm (60x) 25 mm (81x) 20 mm (50x) 25 mm (94x) 20 mm (60x) 40 mm (70x)
Finderscope 6x30 9x50 6x30 9x50 6x30 9x50 9x50
Mount CG-5 Equatorial CG-5 Equatorial CG-5 Equatorial CG-5 Equatorial CG-5 Equatorial CG-5 Equatorial CG-5 Equatorial
Star Diagonal n/a 1.25” 1.25” n/a 1.25” n/a 1.25”
Accessory Tray Yes Yes Yes Yes Yes Yes Yes
Tripod 2” Stainless Steel 2” Stainless Steel 2” Stainless Steel 2” Stainless Steel 2” Stainless Steel 2” Stainless Steel 2” Stainless Steel
CD-ROM TheSkyX TheSkyX TheSkyX TheSkyX TheSkyX TheSkyX TheSkyX
Counterweights 1-7 lbs, 1-4 lbs, 1-11 lbs 2-11 lbs 1-11 lbs 2-11 lbs 2-11 lbs 3-11 lbs 3-11 lbs
Power Car Battery Adapter Car Battery Adapter Car Battery Adapter Car Battery Adapter Car Battery Adapter Car Battery Adapter Car Battery Adapter
Highest Useful Magnification 354x 354x 480x 480x 555x 600x 660x
Lowest Useful Magnification 21x 21x 29x 29x 34x 36x 40x
Limiting Stellar Magnitude 13.4 13.4 14 14 14.4 14.5 14.7
Resolution: Rayleigh .92 arc seconds .92 arc seconds .68 arc seconds .69 arc seconds .59 arc seconds .54 arc seconds .50 arc seconds
Dawes Limit .77 arc seconds .77 arc seconds .57 arc seconds .58 arc seconds .49 arc seconds .46 arc seconds .42 arc seconds
Light Gathering Power 459x unaided eye 459x unaided eye 843x unaided eye 843x unaided eye 1127x unaided eye 1316x unaided eye 1593x unaided eye
Field of View: standard eyepiece 1.3º .83º .64º 1º .55º .83º .71º
Linear FOV (
@1000 yds) 68 ft. 43.8 ft. 33.6 ft. 52.5 ft. 29 ft. 43.8 ft. 38 ft.
Optical Coatings Aluminum Multi-Coated StarBright XLT
®
Aluminum StarBright XLT Aluminum StarBright XLT
Secondary Mirror Obstruction 1.75” n/a 2.7” 2.2” 3.35” 2.3” 3.75”
Diameter, Area 29%, 8.5% n/a, n/a 34%, 11% 28%, 8% 36%, 13% 23%, 5% 34%, 12%
Optical Tube Length 27 inches 50.5 inches 17 inches 37 inches 22 inches 45 inches 24 inches
Telescope Weight 54 lbs 68 lbs 54.5 lbs 67 lbs 73 lbs 93 lbs 91 lbs
Computerized Hand Control * * * * * * *
Slew Speeds Nine slew speeds, 3º/sec MAX Nine slew speeds, 3º/sec MAX Nine slew speeds, 3º/sec MAX Nine slew speeds, 3º/sec MAX Nine slew speeds, 3º/sec MAX Nine slew speeds, 3º/sec MAX Nine slew speeds, 3º/sec MAX
24bit, 0.08 24bit, 0.08 24bit, 0.08 24bit, 0.08 24bit, 0.08 24bit, 0.08 24bit, 0.08
Software Precision arcsec calculation arcsec calculation arcsec calculation arcsec calculation arcsec calculation arcsec calculation arcsec calculation
RS-232 communication RS-232 communication RS-232 communication RS-232 communication RS-232 communication RS-232 communication RS-232 communication
Hand Control Ports port on hand control port on hand control port on hand control port on hand control port on hand control port on hand control port on hand control
Motor Ports Aux Port, Autoguide Ports Aux Port, Autoguide Ports Aux Port, Autoguide Ports Aux Port, Autoguide Ports Aux Port, Autoguide Ports Aux Port, Autoguide Ports Aux Port, Autoguide Ports
Tracking Rates Sidereal, Solar and Lunar Sidereal, Solar and Lunar Sidereal, Solar and Lunar 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 EQ North and EQ South EQ North and EQ South EQ North and EQ South
AutoAlign, 2-Star AutoAlign, 2-Star AutoAlign, 2-Star AutoAlign, 2-Star AutoAlign, 2-Star AutoAlign, 2-Star AutoAlign, 2-Star
Alignment Procedures Alignment, Quick Align Alignment, Quick Align Alignment, Quick Align Alignment, Quick Align Alignment, Quick Align Alignment, Quick Align Alignment, Quick Align
Database * * * * * * *
Complete Revised NGC Catalog 7,840 7,840 7,840 7,840 7,840 7,840 7,840
Complete Messier Catalog 110 110 110 110 110 110 110
Complete IC Catalog 5,386 5,386 5,386 5,386 5,386 5,386 5,386
Complete Caldwell 109 109 109 109 109 109 109
Abell Galaxies 2,712 2,712 2,712 2,712 2,712 2,712 2,712
Solar System objects 9 9 9 9 9 9 9
Famous Asterisms 20 20 20 20 20 20 20
Selected CCD Imaging Objects 25 25 25 25 25 25 25
Selected SAO Stars 29,500 29,500 29,500 29,500 29,500 29,500 29,500
Total Object Database 45,492 45,492 45,492 45,492 45,492 45,492 45,492
*Computerized Hand Control Double line, 16 character Liquid Crystal Display; 19 LED backlit buttons
*Database 40,000+ objects, 100 user defined programmable objects. Enhanced information on over 200 objects.
Specifications are subject to change without notice or obligation.
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