Expanded Specifications Celestron NexStar 4 SE Computerised Telescope

Celestron NexStar 4 SE Computerised Telescope

OPTICAL TUBE INFO:
Optical Design: Maksutov-Cassegrain
Aperture: 102mm (4.02")
Focal Length: 1325mm (52")
Focal Ratio: f/13
Focal Length of Eyepiece 1: 25mm (0.98")
Magnification of Eyepiece 1: 53x
Finderscope: StarPointer™ red dot finderscope
Star Diagonal: Internal Flip mirror for straight thru or 90° viewing angle
Optical Tube: Aluminum
Highest Useful Magnification: 241x
Lowest Useful Magnification: 15x
Limiting Stellar Magnitude: 12.5
Resolution (Rayleigh): 1.37 arc seconds
Resolution (Dawes): 1.14 arc seconds
Light Gathering Power (Compared to human eye): 212x
Secondary Mirror Obstruction: 35mm (0.38")
Secondary Mirror Obstruction by Diameter: 34%
Secondary Mirror Obstruction by Area: 12%
Optical Coatings: StarBright XLT
Optical Tube Length: 343mm (13.5")
Optical Tube Diameter: 125mm (4.9")
Optical Tube Weight: 6 lbs (2.7 kg)
Dovetail: CG-5 Dovetail bar
MOUNT INFO:
Mount Type: Computerized Altitude-Azimuth Single Fork Arm
Instrument load capacity: 10 lbs (4.54 kg)
Height adjustment range (includes mount and tripod): 939.8mm - 2397mm (37" - 55")
Tripod leg diameter: 38.1mm (1.5") Stainless Steel
Mount Head Weight: 7 lbs (3.2 kg)
Accessory Tray: Yes
Tripod Weight: 10 lbs (4.54 kg)
Slew Speeds: 9 slew speeds - max speed 3°/second
Tracking Rates: Sidereal, Solar and Lunar
Tracking Modes: Alt-Az, EQ North and EQ South
GPS: N/A
Dovetail Compatibility: CG-5 dovetail
Number of Auxiliary Ports: 1x AUX Port
Autoguide Port: No
USB Port: Yes, Hand Control input
Power Requirements: 8-AA batteries (not included) and 12 VDC-750 mA (Tip positive)
Motor Drive: DC servo motors
Alignment Procedures: SkyAlign, 1-Star Align, 2-Star Align, Auto 2-Star Align, Solar System Align, EQ North / EQ South Alignment (EQ align requires an equatorial wedge)
Periodic Error Correction: No
Computerized Hand Control: Double line, 18 character Liquid Crystal Display with 19 fiber optic backlit LED buttons
NexStar+ Database: 38,181 accessible objects. Enhanced information on over 200 objects.
Software: Celestron Starry Night Special Edition Software and SkyPortal App
Total Kit Weight: 23 lbs (10.4 kg)
Included Items: Optical tube
Single Fork Arm Mount and Tripod
Accessory Tray
Star Pointer Finderscope
Built-In Wedge
NexStar+ Hand Control
25mm eyepiece
Solar Warning
  • Never look directly at the Sun with the naked eye or with an optic (unless you have the proper solar filter). Permanent and irreversible eye damage may result.
  • Never use your optic to project an image of the Sun onto any surface. Internal heat build-up can damage the optic and any accessories attached to it.
  • Never leave your optic unsupervised. Make sure an adult who is familiar with the correct operating procedures is with your optic at all times, especially when children are present.

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