User manual
Celestron NexStar Evolution 9.25 235mm f

User Manual for Celestron NexStar Evolution 9.25 235mm f 10 Schmidt-Cassegrain GoTo Telescope and Accessories 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 Evolution 9.25 235mm f/10 Schmidt-Cassegrain GoTo Telescope
  • NexStar Evolution Tour
  Representing the largest aperture in the series, the NexStar Evolution 9.25 235mm Schmidt-Cassegrain Telescope from Celestron is a powerful yet portable user-friendly scope 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 four-element rare-earth glass. While the focal ratio is a slow f/10, the scope's precision tracking system allows it to be a competent astrophotography/astroimaging platform.The Evolution comes with two ways to control it. The first is to simply download Celestron's free Navigator app for Android and iOS smartphones and tablets. The scope's onboard WiFi provides the connection to the app and expands the capabilities and functionality, including a database of over 120,000 objects with detailed information on more than 200 of those objects. Second is the iconic 2-line 16-character NexStar hand controller. This is a wired piece of hardware with a database of over 40,000 celestial objects plus several astronomical catalogs including the Messier and Caldwell. Whether using the controller or mobile device, the system can assist in properly aligning the scope, provide tours of the objects and events visible whenever and wherever you're viewing, and allow for manual direction and slew control.Designed for portability, the Evolution features a long life lithium-iron phosphate battery providing up to 10 hours of continual use on a single charge. The scope comes with an AC power supply with plugs for the US, EU, UK, and AU outlets. The battery powers the servo motors, auxiliary accessory ports, a USB charging port, and the built-in WiFi. Manual clutches in both altitude and azimuth enable you to manually move and point the telescope when it's powered off.
  Optical Performance
  • • 235mm (9.25") aperture
    • f/10 focal ratio
    • 2350mm 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: 0.59 arcsec (Rayleigh); 0.49 arcsec (Dawes)
    • Secondary mirror obstruction: 3.35"; 36% by diameter; 13% 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 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 OTA, 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 the user 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
    • RS-232 communication port allows for computer control
    • Flash updateable 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
  Sky Portal App
  • • Connect your smart device to the telescope via direct WiFi connection; no router required
    • Align and control the telescope from your device
    • App uses the device's camera and compass to determine location and what is available to see
    • Enjoy the same features as NexStar controller, but without wires
    • Expanded database to over 120,000 objects
    • Detailed information on over 200 popular objects including audio commentary, statistics, history, mythology, video, and pictures
    • Database includes: Sun, Moon, planets, star clusters, nebulae, galaxies, asteroids and comets, satellites, and the International Space Station
    • Simulate the night sky up to 100 years in the past or future to plan an upcoming observing session
    • Compass Mode: Hold device up to the night sky and identify objects such as stars, planets, and galaxies; zoom in to view fainter objects not visible to the naked eye
    • Night Vision Mode: Preserves night-adjusted vision
    • Listen to more than four hours of audio narration to learn the history, mythology, and science of astronomy and the night sky
    • Works as a stand-alone planetarium app
    • Free for Android or iOS mobile devices
    • Apple iOS 7.0 and later, or Android 4.0 and later
  Mount and Tripod
  • • Mount:
    • Motorized single-arm alt-azimuth fork mount
    • Altitude and azimuth clutches to manually point the telescope when it is powered off
    • Brass worm gears with steel ball bearings provide smooth movement with reduced vibration
    • 146mm diameter/180-tooth stainless steel worm wheels
    • Ports: One port for NexStar+ controller; one 5 VDC USB charging port for smartphones and small electronics; three auxiliary ports for optional accessories such as StarSense AutoAlign System
    • Runs on one internal rechargeable 9.6V, 4.5Ah lithium-iron phosphate (LiFePO4) battery
    • Includes power supply with US, EU, UK, and AU plugs
    • Tripod:
    • Stainless steel two-section legs
    • Adjustable height accommodates a variety of
    • Spikes at the end of the legs provide a sure footing on soft or uneven ground
    • Tray keeps accessories and equipment safe and organized
    • No tools required to set up mount and tripod
  Included Accessories
  • • Eyepieces:
    • 1.25"-diameter barrel accept most filters
    • Anti-reflection multi-coated glass
    • Fold-down rubber eyecups for use with or without eyeglasses
    • 40mm eyepiece produces 59x magnification
    • 13mm eyepiece produces 181x magnification
    • Diagonal:
    • 1.25" snout and eyepiece holder
    • 90° angle places head in comfortable position when optical tube assembly is pointed at or near the zenith
    • Star mirror diagonal corrects view horizontally, but not vertically
    • Finderscope:
    • 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: 050234120920
• Celestron Eyepiece and Filter Kit (1.25")
  • NexStar Evolution Tour
  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

• NexStar Evolution 9.25 235mm f/10 Schmidt-Cassegrain GoTo Telescope awfbvqadwxyswutxbd
• NexStar+ Hand Control (EQ)
• StarPointer Finderscope
• 13mm Eyepiece
• 40mm Eyepiece
• 90° Star Diagonal
• Tripod with Accessory Tray
• AC Adapter with US, EU, UK, and AU Plugs
• Limited 2-Year Warranty

• Eyepiece and Filter Kit (1.25")

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 Evolution 9.25 235mm f/10 Schmidt-Cassegrain GoTo Telescope

  Optical Design	Schmidt Cassegrain
  Aperture	235 mm / 9.3"
  Focal Length	2350 mm
  Focal Ratio	f/10
  Focuser	Internal
  Eyepiece Barrel Diameter	1.25"
  Diagonal	90 Rating 100% users recommend this product to others. And what about you? This product has already been rated by 95 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