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Celestron NexStar 4SE -102mm Computerised Go-To Telescope
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Celestron NexStar 4SE -102mm Computerised Go-To Telescope

This telescope delivers a state of the art stargazing experience, along with incredible magnification, and a motorized computer technology system that will enhance your astronomical hobby.
NZ $1,049.00
incl GST
Qty.
 

Telescope Description

Celestron's NexStar 4 SE 102mm f/13 Maksutov-Cassegrain Go-To Telescope is a powerful, versatile and user-friendly Maksutov-Cassegrain style telescope that can be used for observing everything from the Moon and planets to deep sky objects like galaxies and nebulae. Using Celestron's proprietary StarBright XLT multi-coating system, light transmission is increased throughout the entire optical path with anti-reflection multi-coated lenses, highly reflective multi-coated mirrors, and BK7 optical glass.

The scope's Maksutov variation of the Cassegrain optical system exchanges the front corrector plate of the more common Schmidt design with a convex meniscus lens which not only eliminates the need for periodic collimation, but the nature of the lens requires a smaller secondary mirror which limits obstruction and increases contrast. This optical system, coupled with its precision tracking, allows it to be a competent astrophotography/astroimaging platform for the Moon and planets - despite its relatively slow f/13 focal ratio

Driving the dual servo motors on the mount is the brains of the NexStar 4SE: the iconic NexStar computer hand controller. Packed with almost 40,000 celestial objects, it can hold up to 25 additional user-defined destinations and is updateable via the Celestron website. It has multiple alignment procedures to get you observing fast - including the super-easy SkyAlign system. Capable of being used in the northern or southern hemispheres, the NexStar has sidereal, lunar and solar tracking speeds to accurately follow near and deep-sky objects, plus nine slew speeds.

Performance
  • 4" / 102mm aperture
  • f/13 focal ratio
  • 1325mm focal length
  • BK7 optical glass primary mirror
  • StarBright XLT optical coatings: Multi-layer aluminum/SiO2 (quartz)/TiO2 (titanium dioxide)/Si02 (silicon dioxide) mirror coatings with flat reflectivity across the light spectrum for both astrophotography/astroimaging and visual observation
  • Multi-layer MgF2 (magnesium fluoride) and HfO2 (hafnium dioxide) anti-reflective lens coatings
  • High-transmission water white glass corrector lens with 97.4% light transmission
  • Resolution: Rayleigh: 1.36 arcsec / Dawes: 1.14 arcsec
  • Secondary mirror obstruction: 1.25", 34.4% by diameter / 11% by area
NexStar Computer Controller
  • Two-line, 16-character LCD display
  • 19 fiber optic backlit red LED buttons
  • Database of over 38,000 celestial objects plus 25 user-defined
  • Automatically slew to planets, objects, constellations plus a variety of catalogs, including the Messier, NGC, Caldwell, and SAO brightest stars
  • Anti-backlash compensation programs-out play between gears for more precise tracking
  • Tour Mode: Shows a selection of the most popular objects for the time and date you are observing
  • Pre-programmed alignment systems including SkyAlign, Auto 2-Star, 1-Star, 2-Star, and Solar System for fast and easy set up
  • SkyAlign alignment: Takes minutes, with minimal effort or experience - Point the telescope at three bright objects in the sky, and the telescope does the rest
  • Pre-set sidereal, solar, and lunar slew speeds for observing the fast-moving Moon, to slower-moving deep space subjects
  • Nine slew speeds: 4°/sec, 2°/sec, 1°/sec, 0.5°/sec, 2x, 4x, 8x,16x, and 32x
  • RS-232 communication port allows for computer control
  • Flash updateable via the Celestron website
Mount
  • Single fork alt-az
  • Dual-axis servo motors with optical encoders allow for precise tracking with virtually no vibration
  • Motor resolution: 0.26 arcsec
  • Communication ports: Autoguider port, Aux port, hand-controller
  • Runs on eight user-supplied AA batteries or optional 12VDC power supply
Viewing Options
  • Integrated internal 90° flip mirror
  • With mirror flipped up the 90° angle puts head in a comfortable viewing position when scope is pointed at or near the zenith
  • Lay mirror down to direct light to the visual back for astrophotography/imaging
Eyepiece
  • 1.25" diameter barrel
  • 25mm focal length produces 53x magnification
  • Anti-reflection multi-coated glass improves color rendition and contrast
  • Threaded barrel accepts most 1.25" astronomical filters
  • Fold down rubber eyecups for use with or without eyeglasses
Starpointer
  • Projects a single red dot in line of sight
  • Un-magnified to make finding objects faster and easier
  • Used primarily for alignment process

Recommended Usage  Astronomy

*2 Year factory warranty covered by Celestron*

Download Telescope Manual 
 


Specifications 

Optical Tube Info:  
Optical Design Maksutov-Cassegrain
Aperture (mm) 102 mm (4.02 in)
Focal Length 1325 mm (52 in)
Focal Ratio 13
Focal Length of Eyepiece 1 (mm) 25 mm (0.98 in)
Magnification of Eyepiece 1 53 x
Finderscope StarPointer
Star Diagonal Internal Flip mirror for straight thru or 90 viewing angle
Mount Info:  
Mount Type Single Fork Arm Altazimuth
Tripod Steel with built-in wedge
Power Requirements 8-AA batteries (not included)
Highest Useful Magnification 241 x
Lowest Useful Magnification 15 x
Limiting Stellar Magnitude 12.5
Resolution (Rayleigh) 1.37 arc seconds
Resolution (Dawes) 1.14 arc seconds
Light Gathering Power (Compared to human eye) 212 x
Apparent Field of View 1 °
Linear Field of View (@1000 yds) 53 ft (16 m)
Secondary Mirror Obstruction 1.38 in (35 mm)
Secondary Mirror Obstruction by Diameter 34%
Secondary Mirror Obstruction by Area 12%
Optical Coatings StarBright XLT
Optical Tube Length 13.5 in (343 mm)
Total Telescope Kit Weight 11 lbs (4.99 kg)
Tripod Weight 10 lbs (4.54 kg) lbs (4.54 kg)
Slew Speeds Nine slew speeds
Tracking Rates Sidereal, Solar and Lunar
Tracking Modes Alt-Az, EQ North & EQ South
Alignment Procedures SkyAlign, Auto 2-Star Align, 1-Star Align, 2-Star Align, SolarSystem Align
Communication Ports RS-232 communication port on hand control, Aux port, Camera Control port
Computer Hand Control Double line, 16 character Liquid Crystal Display with 19 fiber optic backlit LED buttons
Database 38,181 accessible objects
  

 

 

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