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Celestron NexStar 4SE 102mm f/13 Maksutov-Cassegrain GoTo Telescope with Observer's Kit

 

  • 1Description

B&H created the Celestron NexStar 4SE 102mm f/13 Maksutov-Cassegrain GoTo Telescope with Observer's Kit to give you all the tools you need to make detailed observations of celestial objects from the Moon and planets to deep-sky wonders. This kit includes the easy-to-manage Maksutov-Cassegrain optical tube assembly (OTA), the iconic NexStar+ GoTo hand controller, a sturdy stainless steel tripod, and a low-power 25mm eyepiece. Adding to this assortment of standard equipment is the Observer's Kit, which gives you two more eyepieces, two planetary filters, a Moon filter, a Barlow lens, a lens cloth, and a hard carrying case for all the Observer accessories plus a few more.

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

    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 multi-coating system, light transmission is increased throughout the entire optical path with anti-reflection multi-coated lenses, highly reflective multi-coated 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 mirrorlimiting 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.

    Driving the dual servo motors on the mount is the brain of the NexStar 4SE: the iconic NexStar+ computer hand controller. Packed with 40,000+ celestial objects, it can hold up to 100 additional user-defined destinations and is updatable via the Celestron website. It has multiple alignment procedures to get you observing fastincluding 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 and the ability to automatically trigger a camera's shutter release for Fastar or piggyback wide-field photography or conventional prime-focus astrophotography.

    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 contrast
    • BK7 optical glass primary mirror
    • StarBright XLT optical coatings: Multi-layer aluminum/SiO2 (quartz)/TiO2 (titanium 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
    • Internal 90 flip mirror: With the mirror flipped up, the 90 angle puts head in a comfortable viewing position when 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 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
    • Constellation Tour: 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 experiencepoint 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: Asterims, 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 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
    • 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 multi-coated 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 alignment process

    UPC: 050234110495

  • Celestron Observers Accessory Kit (1.25')
    • NexStar SE

    Celestron put together this 1.25' Observers Accessory Kit to give users the essentials for observation and astro-imaging. This kit includes two Plossl eyepieces that yield high and low magnifications on any given telescope, two planetary color filters, and a neutral density Moon filter. This kit also includes a multi-function accessory that combines a 2x Barlow lens with a T-adapter which will not only double the magnification of any eyepiece used in it, but also allows a camera-specific T-ring to easily thread onto it to for astrophotography with a DSLR. An included plastic carrying case holds all of the kit's optical accessories with room for more.

    Eyepieces

    • 1.25' barrel diameter
    • Four-element lens design
    • 52 apparent angle of view
    • Anti-reflection fully multi-coated optics improve light transmission, color rendition, and contrast
    • 17mm focal length produces a medium magnification view in most telescopes
    • 6mm focal length produces high magnifications - ideal for the Moon and planets

    Eyepiece Filters

      #80A Medium-Blue:

    • Enhances the contrast of the cloud belts on Jupiter and the polar ice caps on Saturn
    • Increases contrast on the Moon
      #25 Deep Red:

    • Helps to define the polar ice caps on Mars
    • Useful when observing Jupiter
      ND Moon:

    • Helps block out a portion of the Moon's light to increase contrast, allowing users to see details better
    • Use when observing Venus to reduce glare so that the planet's phases can more easily be seen

    Combo Accessory

    • 2x Barlow: Doubles the magnification of any 1.25' eyepiece
    • T-threads allow a camera to be mounted when used with an optional T-ring

    UPC: 050234943086

In the Box

  • NexStar 4SE 102mm f/13 Maksutov-Cassegrain GoTo Telescope vquvxbvswedfdafabvwuefdwduaxt
  • E-Lux 25.0mm 1.25' Eyepiece
  • StarPointer Finderscope
  • NexRemote Control Software CD
  • The Sky CD-ROM Software for Windows
  • RS-232 to Serial Port Cable - for GPS 16 Accessory
  • NexStar+ Hand Controller
  • Tripod with Accessory Tray
  • Limited 2-Year Warranty
  • Observers Accessory Kit (1.25')

Table of Contents

  • 1Description

Optical Design: Maksutov Reflector
Aperture: 102 mm / 4'
Focal Length: 1325 mm
Focal Ratio: f/13
Focuser: Internal
Eyepiece Barrel Diameter: 1.25'
Diagonal:
Finderscope: Yes
Optical Tube Dimensions: Length: 13.5' / 342.9 mm
Type: Adjustable, 2-Section
GoTo Capability: Yes, NexStar+ controller
Material of Tripod: Stainless Steel
Batteries: 8 x AA
GPS: None
Wi-Fi: None
Weight: 10.0 lb / 4.5 kg (Tripod)21.0 lb / 9.5 kg (Fully Assembled)
Box Dimensions (LxWxH): 13.0 x 10.9 x 5.0'

       

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    Filed under: High-End Telescope Auctions (USA)