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

BH #CEN4SEOAK (B&H Kit)
Celestron NexStar 4SE 102mm f/13 Maksutov-Cassegrain GoTo Telescope with Observer's Kit
Key Features
  • 102mm Maksutov-Cassegrain Telescope
  • 1325mm Focal Length, f/13 Focal Ratio
  • StarBright XLT Optical Coating System
  • 40,000+ Object NexStar+ Hand Controller
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.
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Celestron NexStar 4SE Overview

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

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.

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 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 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: 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 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 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: 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 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 alignment process

 

UPC: 050234110495
Celestron Observers Accessory Kit (1.25")

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

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

Optical Design
Maksutov-Cassegrain reflector
Aperture
102mm
Focal Length
1325mm
Focal Ratio
f/13
Eyepiece Barrel Diameter
1.25"
Diagonal
Integrated 90° flip
1.25" eyepiece holders
Finderscope
Red-dot StarPointer
GoTo Capability
Yes, NexStar+ controller
Tripod
Stainless steel legs
Adjustable height
Built-in equatorial wedge
Weight 10 lb / 4.5 kg
Mount Type
Motorized alt-az
Single-arm fork
Power Source
8 x AA batteries
Optical Tube Length
13.5" / 342.9 mm
Weight
21.0 lb / 9.5 kg, OTA and mount
Packaging Info
Package Weight
38 lb
Box Dimensions (LxWxH)
32 x 27.5 x 13.5"

Celestron Observers Accessory Kit (1.25") Specs

Packaging Info
Package Weight
3.78 lb
Box Dimensions (LxWxH)
13 x 10.9 x 5"

Celestron NexStar 4SE Reviews

See any errors on this page? Let us know

Does this work natively with the app to locate ...

Does this work natively with the app to locate planets, etc., or do I need to purchase the WiFi adapter?
Asked by: Chris
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 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. Nothing extra is needed to accomplish this.
Answered by: Dan
Date published: 2022-11-30

can you purchase it with the Observation Kit and ...

can you purchase it with the Observation Kit and the Observer's Kit?
Asked by: Anthony
cust is asking for a discount bundle..Jay tabi told me to tell you
Answered by: David
Date published: 2021-02-03

I have a Meade equatorial mount tripod. Can this ...

I have a Meade equatorial mount tripod. Can this scope be purchased without the tripod?
Asked by: James
The NexStar 4SE #11049 is packaged as a complete set that includes the optical tube, mount, tripod, and accessories.
Answered by: Telescope
Date published: 2023-01-16

Hi, i cannot seems to see what is the ...

Hi, i cannot seems to see what is the magnification of this 4SEunit?
Asked by: Kathy
The NexStar 4SE comes with a 25mm eyepiece. The focal length of the NexStar 4SE is 1325mm. 1325mm divided by 25mm equals 53x magnification. You can use higher magnification eyepieces such as a 20mm, 15mm, or a 10mm as long as the seeing condition (atmosphere) is calm and steady. The highest useful magnification is 241x. Any magnifications above that limit will overpower the telescope's capabilities and may result in blurry images. Hope this helps!
Answered by: Telescope
Date published: 2020-12-27

can you get this both with the Observations ...

can you get this both with the Observations accessory Kit and Observers accessory Kit?
Asked by: Anthony
cust is asking for a discount bundle..Jay tabi told me to tell you
Answered by: David
Date published: 2021-02-03

question

I have the NexStar 4 se telescope now how do I take photos of the Moon and stars with a Nikon camera through that small eyepiece ? I have a T ring adapter model # 93625 for a Nikon camera it fits in the top eyepiece but how do I use my 25mm plossl and other focal length eyepieces to take close up photos of the moon ?
Asked by: Anonymous
So you would not be able to use the T-Adapter with eyepieces. However we do sell the Celestron SLR Camera Adapter with Integral 2x Barlow Lens. Which would give you some more magnification if you needed. Then you can get the T-Ring that you need to attach your Nikon DSLR. You can do the Vello Lens Mount Adapter - T Mount Lens to Nikon F Mount Camera, which will work with the adapter you have now. As well as the 2X Barlow Lens Camera Adapter. Website link for Barlow: http://bhpho.to/1OmELU1Website link for T-Ring: http://bhpho.to/1d8lKOS
Answered by: Alex S.
Date published: 2019-12-18

question

Does B&H carry a solar filter for the Celestron 4SE?
Asked by: Anonymous
MrStarGuy Adjustable Objective White Light Solar Filter (86-117mm OD) B&H # STSGFT039 MFR # SGFT039
Answered by: Anonymous
Date published: 2018-10-24

question

Does this model track the moon? I want to be able to take HDR photos and Time Lapse of the moon.
Asked by: Antonio
This telescope (after doing a setup procedure) will target the moon and track it for about 30 seconds.
Answered by: Thomas W.
Date published: 2018-08-27
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