Product Description

MPN: 12091-CGL

Celestron NexStar Evolution 8 inch SCT Computerised Reflector Telescope Specification

Optical Tube Info

• Optical Design: Schmidt-Cassegrain
• Aperture: 125mm (5')
• Focal Length: 1250mm (49')
• Focal Ratio: f/10
• Focal Length of Eyepiece 1: 40mm (1.57')
• Magnification of Eyepiece 1: 31x
• Focal Length of Eyepiece 2: 13mm (.51')
• Magnification of Eyepiece 2: 96x
• Finderscope: StarPointer™ red dot finderscope
• Star Diagonal: 90° Prism - 1.25'
• Optical Tube: Aluminum
• Highest Useful Magnification: 295x
• Lowest Useful Magnification: 18x
• Limiting Stellar Magnitude: 13
• Resolution (Rayleigh): 1.11 arc seconds
• Resolution (Dawes): 0.93 arc seconds
• Light Gathering Power (Compared to human eye): 329x
• Secondary Mirror Obstruction: 51mm (2')
• Secondary Mirror Obstruction by Diameter: 40%
• Secondary Mirror Obstruction by Area: 17%
• Optical Coatings: StarBright XLT
• Optical Tube Length: 330mm (13')
• Optical Tube Diameter: 152mm (6')
• Optical Tube Weight: 4.54 kg
• Dovetail: CG-5 Dovetail bar

Mount Info

• Mount Type: Computerized Altitude-Azimuth Single Fork Arm
• Instrument load capacity: 11 kg
• Height adjustment range (includes mount and tripod): 1193.8mm - 1752.6mm (47' – 69')
• Tripod Leg Diameter: 31.75mm (1.25') Stainless Steel
• Mount Head Weight: 7 kg
• Accessory Tray: Yes
• Tripod Weight: 5.44 kg
• Slew Speeds: 9 slew speeds - max speed 4°/second
• Tracking Rates: Sidereal, Solar and Lunar
• Tracking Modes: Alt-Az, EQ North and EQ South
• GPS: N/A
• Dovetail Compatibility: CG-5 saddle plate
• Number of Auxiliary Ports: 4 AUX Ports (Hand Control can use any of the AUX Ports)
• Autoguide Port: No
• USB Port: Yes, Hand Control input and Mount output
• Power Requirements: Internal 9 6V, 4 5Ah lithium iron phosphate battery (LiFePO4)
• Motor Drive: DC servo motors
• Alignment Procedures: SkyAlign, 1-Star Align, 2-Star Align, Auto 2-Star Align, Solar System Align, Quick-Align, Last Alignment, EQ North / EQ South Alignment (EQ align requires an equatorial wedge)
• Periodic Error Correction: No
• Computerized Hand Control: 2 line x 18 character backlit Liquid Crystal Display, 19 LED backlit buttons, USB 2.0 Port for PC connection
• NexStar+ Database: Over 40,000 including 220 of the best deep sky and solar system objects
• Software: Celestron Starry Night Special Edition Software and SkyPortal App
• Total Kit Weight: 17.23 kg

What’s in the Box?

• Optical tube
• Single Fork Arm Mount and Tripod
• Accessory Tray
• Built-in Wifi
• Integrated Lithium-iron battery
• NexStar+ Hand Control
• 40mm and 13mm eyepiece
• Red dot finderscope
• Visual Back
• Star Diagonal
• 4 plug AC adapter

MPN: 12091-CGL

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