Celestron NexStar 4SE 102mm f/13 Maksutov-Cassegrain GoTo Telescope


Price:
Sale price$599.99

Description

Celestron's NexStar 4SE 125mm f/13 Maksutov-Cassegrain GoTo Telescope is a powerful, versatile, and user-friendly catadioptric-style scope that can be used for observing everything from the moon and planets to bright deep-sky objects like stars, galaxies, and nebulae. Using Celestron's proprietary StarBright XLT multicoating system, light transmission is increased throughout the entire optical path with anti-reflection multicoated lenses, highly reflective multicoated mirrors, and crown optical glass elements. Similar to their Schmidt cousins, the Maksutov design exchanges the conventional front corrector plate with a convex meniscus lens, which results in a smaller secondary mirror—limiting obstruction and increasing contrast, while eliminating the need for periodic collimation. While the focal ratio is a relatively slow f/13, the scope's optical performance, added to the mount's precision tracking system and integrated equatorial wedge, allows it to be a competent astrophotography/imaging platform for the moon and planets.


Performance

  • 4" (102mm) aperture
  • f/13 focal ratio
  • 1325mm focal length
  • Maksutov-Cassegrain optical system
  • Front convex meniscus lens corrects spherical and chromatic aberrations and comas (off-axis aberration) across the entire field of view
  • Smaller secondary mirror versus Schmidt-Cassegrain reduces obstructions and increases the contrast
  • BK7 optical glass primary mirror
  • StarBright XLT optical coatings: Multilayer aluminum/SiO2 (quartz)/TiO2 (titanium dioxide) mirror coatings with flat reflectivity across the light spectrum for both astrophotography/astroimaging and visual observation
  • Multilayer 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
  • Internal 90° flip mirror: With the mirror flipped up, the 90° angle puts the head in a comfortable viewing position when the scope is pointed at or near the zenith; lay the mirror down to direct light to the visual back for astrophotography/imaging

NexStar+ Computer Controller

  • 2-line, 16-character LCD display
  • 19 fiber optic backlit red LED buttons
  • Database of over 40,000 celestial objects plus 100 user-defined
  • Automatically slew to planets, stars, constellations, and a variety of catalogs
  • Camera control: For piggyback wide-field or conventional astrophotography through the optical tube assembly, the controller can automatically trigger the shutter release to capture the image
  • Anti-backlash compensation programs outplay between gears for more precise tracking
  • Tour Mode: Shows a selection of the most popular objects for the time and date you are observing
  • Constellation Tour: This allows you to take a tour of all the best objects within a particular constellation
  • Alignment procedures: SkyAlign, Auto 2-Star, 1-Star, 2-Star, and Solar System
  • 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
  • Nine slew speeds: 4°/sec, 2°/sec, 1°/sec, 0.5°/sec, 2x, 4x, 8x, 16x, and 32x
  • Sidereal, Solar, and Lunar tracking rates for observing the fast-moving moon, to slower-moving deep-space subjects
  • Tracking modes: Alt-Az (default, for general GoTo use), EQ North (use for long-exposure astrophotography in Northern Hemisphere with EQ wedge engaged), EQ South (use for long-exposure astrophotography in Southern Hemisphere with EQ wedge engaged), Off (no tracking when using as a terrestrial spotting scope)
  • RS-232 communication port allows for computer control
  • Flash updatable via the Celestron website

 

Database Details:

  • Solar system objects including the sun, moon, and planets
  • Named objects
  • Stars: Asterism, variable stars, double stars, named stars
  • Caldwell catalog
  • Messier catalog
  • NGC catalog
  • SAO catalog
  • Constellations

 

 

Mount & Tripod

Mount:
  • Single-fork alt-az
  • Dual-axis servo motors allow for precise tracking with virtually no vibration
  • Motor resolution: 0.26 arcsec
  • Optical encoders track mount movement to improve tracking and GoTo accuracy while allowing the mount to maintain alignment when moved manually
  • Communication ports: Autoguider port, Aux port, hand controller
  • Runs on eight user-supplied AA batteries or an optional 12 VDC power supply
Tripod:
  • Stainless steel legs
  • Adjustable height accommodates a variety of observation positions or users
  • Built-in equatorial wedge enables more precise tracking accuracy during long-exposure astrophotography
  • The tray holds accessories such as eyepieces and filters and adds stability and vibration reduction
  • Weight: 10 pounds

Included Accessories

Eyepiece:
  • 1.25" diameter barrel
  • 25mm focal length produces 53x magnification
  • Anti-reflection multicoated glass improves color rendition and contrast
  • Threaded barrel accepts most 1.25" astronomical filters
  • Fold-down rubber eyecup for use with or without eyeglasses
StarPointer Finder
  • Projects a single red dot in line of sight
  • Unmagnified to make finding objects faster and easier
  • Used primarily for the alignment process

 WE SHIP IN 1 BUSINESS DAY and we package professionally. We are interested in BUYING your photographic equipment as well. We are Camera Exchange located in Waterford, Michigan. 

 

CEL11049

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