User manual
Celestron NexStar 8SE 203mm f 10

User Manual for Celestron NexStar 8SE 203mm f 10 Schmidt-Cassegrain Observation Kit

• Product category: Catadioptrics (Cassegrains) Celestron
• Brand: Celestron
• Description and content of package
• Technical information and basic settings
• Frequently asked questions – FAQ
• Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
• Authorized service for Celestron Catadioptrics (Cassegrains)

Product description

• Celestron NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope
  • NexStar SE
  Representing the largest aperture in the series and drawing in more light to see deeper into space than smaller versions, Celestron's NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope is a powerful yet portable scope that can be used for observing everything from the Moon and planets to deep-sky objects like stars, galaxies and nebulae, while maintaining the user-friendly interface of the SE series. 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. While the focal ratio is a relatively slow f/10, the mount's precision tracking system allows it to be a competent shorter-exposure astrophotography imaging platform for the Moon and planets.Driving the dual servo motors on the mount is the brain of the NexStar 8SE: 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
  • • 8" (203.2mm) aperture
    • f/10 focal ratio
    • 2032mm focal length
    • Crown 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
    • Internal focusing mechanism
    • Resolution: 0.69 arcsec (Rayleigh); 0.57 arcsec (Dawes)
    • Secondary mirror obstruction: 2.5"; 31% by diameter; 9.77% by area
    • Fastar capability: Secondary mirror can be removed and a DSLR or imaging rig mounted in its place for fast wide-field astrophotography
  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: 5°/sec, 3°/sec, 1°/sec, 2x, 4x, 8x, 16x, 32x, and 64x
    • Sidereal, Solar, and Lunar tracking rates for observing the fast-moving Moon, to slower-moving deep-space subjects
    • Tracking modes: Alt-Az, EQ North, EQ South, 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
    • 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 81x 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
    • 33' field of view at 1000 yards
    Diagonal:
    • 1.25" input and output accepts most 1.25" astronomical eyepieces and accessories
    • 90° angle puts head in a comfortable position when observing at or near the zenith
    • Corrects view horizontally, but not vertically
    StarPointer Finder:
    • Projects a single red dot in line of sight
    • Unmagnified view ensures a wide field of view to make finding objects faster and star-hopping navigation easier
  UPC: 050234110693
• Celestron PowerTank 7-Amp 12 VDC Power Supply
  • NexStar SE
  Power your motorized/computer-controlled telescope with Celestron's PowerTank 7-Amp 12 VDC Power Supply. This versatile accessory features two 12VDC car/vehicle plugs to power the telescope and peripherals, plus two USB ports to charge small electronics such as phones or GPS sets. To help get you to your observation spot it is equipped with a powerful spot light, and when you're setting up, switch to the smaller flashlight. When it's time for observation, put the red lens cap on the flashlight to light your way without affect your night-adjusted vision. A built-in circuit breaker protects all your equipment and devices from damage.
  Power
  • • 7 amp hour capacity
    • Two 12VDC car/vehicle plugs with adapter cord
    • Two 5V USB ports to charge small electronics
  Lights
  • • Large white LED spotlight to navigate and set-up with tilt-head
    • Smaller flashlight for tasks
    • Red lens cap for flashlight to preserve night-adjusted vision
  Additional Features
  • • Built-in circuit breaker to protect electronics
    • 110-220VAC switchable universal power adapter included
    • Charging/battery-power LED indicators
  UPC: 050234187749
• Celestron AC to DC Power Adapter
  • NexStar SE
  The Celestron AC to DC Power adapter has a standard 2-prong North American power plug on a ~6' cord on one end, and a 5.5mm circular DC output jack on a ~6 cord on the other side; in between is a transformer box.  The North American plug cord is detachable from the transformer; the cord with the 5.5mm DC plug point is permanently attached to the transformer.  Output of this unit is consistently 12 volts DC.This allows AC 120-240V, 50-60 Hz AC current supplies to power any of the Celestron telescopes with the 5.5mm DC input on their drive base, a long list of items which includes the Advanced, Celestar 8, CG9/11/14, CI700, CPC, CGE, NexStar i, NexStar SE, Celestron NexStar i, NexStar SE, Ultima 2000 series and others. UPC: 050234187787
• Celestron Eyepiece and Filter Kit (1.25")
  • NexStar SE
  Celestron put together this 1.25" Eyepiece and Filter Kit to give users essential accessories for planetary observation. This kit includes five Plossl eyepieces that provide a wide range of magnifications on any given telescope, six of the most popular colored planetary filters to enhance the views, a Moon filter that reduces glare from the lunar surface while enhancing contrast, and a 2x Barlow lens which essentially doubles the magnification of any eyepiece used with it. An included hard aluminum carrying case protects the accessories while custom die-cut foam on the inside cushions them.
  Eyepieces
  • • 1.25" diameter barrels
    • Accepts most standard 1.25" eyepiece filters
    • Anti-reflection multi-coated optics improves light transmission, color rendition, and contrast
    • 52° apparent angle of view
    • 6mm offers highest magnification potential
    • 8mm produces a high magnification, but with a slightly longer eye relief than the 6mm
    • 13mm produces a comfortable mid-range magnification
    • 17mm offers a higher magnification potential than the 32mm without sacrificing brightness
    • 32mm has the lowest magnification potential with the longest eye relief and highest light transmittance
  Filters
  • • Fits standard 1.25" eyepieces
    #80A Blue:
    • Most popular for the study of detail on Jupiter and Saturn
    • Enhances the contrast on Jupiter's cloud belts
    • Enhances details of the Great Red Spot
    • Brings out detail in Saturn's belts and polar features
    • Also very useful for lunar observing
    #58 Green:
    • Rejects red and blue wavelengths
    • Increases the contrast on the lighter parts of the surface of Jupiter
    • Useful for enhancing the cloud belts and polar regions on Saturn
    • Increases the contrast in Mars polar ice caps
    • Increases the contrast of atmospheric features on Venus
    #56 Light Green:
    • Excellent for the observation of Martian polar ice caps and for the yellow tinted dust storms on the planet's surface
    • Increases the contrast of the red and blue regions in Jupiter's atmosphere and cloud belts
    • Great for lunar observing
    #25 Red:
    • Blocks the transmission of blue and green wavelengths
    • Sharply defines the contrast between the cloud formations and the lighter-toned surface features on Jupiter
    • Useful for definition of the Martian polar ice caps and maria
    #21 Orange:
    • Reduces transmission of blue and green wavelengths
    • Increases the contrast between these blue/green areas and red/yellow/orange areas
    • Sharpens the boundaries between these areas on the Martian surface
    • Sharpen the contrast in Jupiter's belts and to bring out the Great Red Spot
    • Slightly increases surface details on Saturn
    #12 Deep Yellow:
    • Enhances red and orange features on Jupiter and Saturn, while blocking blue and green wavelengths
    • Lightens the red and orange features on Mars, while reducing, or blocking, the transmission of blue and green areas - increasing the contrast between the two
    • Enhances the blue clouds in the Martian atmosphere
    Moon:
    • Makes viewing the Moon safe when at or near full phase
    • Reduces glare to bring out more surface detail and improve contrast
    • Also useful to bring out surface details on Venus
  Barlow Lens
  • • 1.25" diameter barrel and eyepiece holder
    • 2x magnification doubles the magnification of any eyepiece used
    • Increases magnification while preserving eyepiece's native eye relief for easier viewing at high magnifications
  Case
  • • Hard aluminum case with reinforced corners and edges
    • Dual latch-locks
    • Hinge carrying handle
    • Custom interior die-cut foam protects and cushions accessories
    • Extra room for additional accessories - simply pluck foam for a custom-fit space
  UPC: 050234943031
• Celestron Ultra High Contrast Light Pollution Reduction Filter (1.25")
  • NexStar SE
  LPR (light pollution reduction) filters are designed to selectively reduce transmission of certain wavelengths of light, specifically those produced by artificial light.  These include mercury vapor, high & low pressure sodium vapor lights and the unwanted natural light caused by neutral oxygen emissions in our atmosphere.  The UHC LPR filter has improved contrast over the typical broadband filters, giving darker background skies and noticeably improved contrast of emission nebulae.  The advanced coatings enable and impressive 97% total transmission across the entire bandpass, with total blockage of prominent light pollution lines.  It is a perfect filter for viewing nebula from light polluted skies as well as for boosting the contrast of nebula from dark sky sites.
  • Multilayer, plasma-assisted and Ionbeam hardened dielectric coatings yield supreme durability
  UPC: 050234941235
• Celestron SkyPortal WiFi Module
  • NexStar SE
  Transform your smartphone or tablet into a wireless controller for your computerized telescope with Celestron's SkyPortal WiFi Module. It plugs into the Hand Control or AUX port and begins to generate it's own WiFi signal to directly connect to your mobile device without the need for a router. Since it uses the telescope's power there are no batteries, plugs, or cables required.The SkyPortal module works in conjunction with the free SkyPortal mobile app available for iOS and Android devices. The app features a database of over 100,000 objects with astroimages and audio descriptions of hundreds of them including the history, mythology, and key features of them. It can assist with the telescope alignment and if you hold the screen up to sky, it will identify the objects based on your location, date, and time. If you don't know what you want to look at, the SkyPortal app will take you on a guided tour.
  Use and Handling
  • • Plugs into the telescope's Hand Control or AUX port
    • Emits its own WiFi signal to directly connect to smartphones and tablets
    • Lets you use your device as a wireless hand controller
    • Powered by telescope: no batteries, cables, or plugs required
  SkyPortal Planetarium App
  • • Free mobile app for iOS and Android smartphones and tablets
    • Tap any celestial object you see in the sky to identify it, tap again to slews to that object
    • Directly interfaces with SkyQ Link II WiFi module
    • Assists in alignment procedures, except with SkyProdigy models
    • Over 100,000 celestial objects from the Moon and planets to galaxies and nebulae
    • Provides guided tours of available objects based on location, date, and time
    • Works as a stand-alone planetarium app
    • Astroimages and audio descriptions for the most popular objects
    • Explains the history, mythology, and key features of the most popular celestial objects
    • Hold your screen up to the sky to identify objects in Compass Mode
  Compatibility
  • • Astro Fi
    • NexStar SE Series
    • NexStar SLT
    • NexStar Evolution
    • CPC, CPC DX
    • NexStar GT, with required #93919 splitter - sold separately
    • CGE, CGE Pro
    • Advanced VX
    • CG-5, with required #93923 splitter - sold separately
    • CGEM, CGEM DX
    • LCM, with required #93919 splitter - sold separately
    • CGX
    • CGX-L
    • CGEM II
  UPC: 050234939737

• NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope awbqqexuwyctatxxcwwqrwfsfbxrtubzedrf
• StarPointer Finderscope
• The Sky CD-ROM Software for Windows
• NexRemote Control Software CD
• 25mm Eyepiece
• 90° Star Diagonal
• Tripod with Accessory Tray
• Limited 2-Year Warranty

• PowerTank 7-Amp 12 VDC Power Supply

• AC to DC Power Adapter

• Eyepiece and Filter Kit (1.25")

• UHC (Ultra High Contrast) LPR Filter (1.25") - Reduces Transmission of Wavelengths of Artificially-Produced Light

• SkyPortal WiFi Module

Upload User Manual

Please enter here the link to the user manual of this product: OR Enter here the file with the user manual of this product from your computer/phone: (60MB max; Permitted formats: PDF) 0%

Technical parameters

• Celestron NexStar 8SE 203mm f/10 Schmidt-Cassegrain GoTo Telescope

  Optical Design	Schmidt Cassegrain
  Aperture	203 mm / 8"
  Focal Length	2032 mm
  Focal Ratio	f/10
  Focuser	Internal
  Eyepiece Barrel Diameter	1.25"
  Diagonal	90 Rating 94% users recommend this product to others. And what about you? This product has already been rated by 26 owners. Add your rating and experience with the product. Discussion Ask our technicians if you have a problem with your settings, or if anything is unclear in the user manual you have downloaded. You can make use of our moderated discussion. The discussion is public and helps other users of our website who may be encountering similar problems. The discussion is empty - enter the first post Post a new topic / query / comment: Items marked with * are required. Your name *: E-mail : Subject *: Message *: Your email address will not be displayed. Do not forget to fill it in if you want to receive a reply to your enquiry/contribution. Processing of personal data in accordance with GDPR