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

BH #CENSE8 • MFR #12091
Celestron NexStar Evolution 8 203mm f/10 Schmidt-Cassegrain GoTo Telescope
Key Features
  • 203mm Schmidt-Cassegrain OTA
  • 2032mm Focal Length, f/10 Focal Ratio
  • StarBright XLT Optical Coating System
  • Wireless Control with iOS/Android App
The NexStar Evolution 8 203mm Schmidt-Cassegrain Telescope from Celestron is a powerful, portable, versatile, and user-friendly telescope 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 for the Moon and planets.
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Celestron NexStar Evolution 8 Overview

  • 1Description
  • 2Optical Performance
  • 3NexStar Controller
  • 4Sky Portal App
  • 5Mount and Tripod
  • 6Included Accessories

The NexStar Evolution 8 203mm Schmidt-Cassegrain Telescope from Celestron is a powerful, portable, versatile, and user-friendly telescope 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 for the Moon and planets.

The Evolution comes with two ways to use and control it. The first is to simply download Celestron's free Navigator app for Android and iOS smartphones and tablets. The scope's WiFi provides the connection to the app and expands the capabilities and functionality, including an expanded 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 computer 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

  • 203mm (8") 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"; 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 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 users
  • 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 51x magnification
  • 13mm eyepiece produces 156x 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: 050234120913

Celestron NexStar Evolution 8 Specs

Optical Tube Assembly
Optical DesignSchmidt Cassegrain
Aperture203 mm / 8"
Focal Length2032 mm
Focal Ratiof/10
FocuserInternal
Eyepiece Barrel Diameter1.25"
Diagonal90° Star
FinderscopeYes
Optical Tube DimensionsLength: 17" / 43.2 cm
Mount
TypeMotorized; Alt-Azimuth Single Fork
GoTo CapabilityYes, Computerized GoTo
Tripod
TypeAdjustable
Material of TripodStainless Steel
General
Batteries1 x Built-In Rechargeable
GPSNo
Wi-FiYes (Built In)
Weight40.6 lb / 18.4 kg
Packaging Info
Package Weight62.8 lb
Box Dimensions (LxWxH)43 x 28 x 15"
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Is the 9.6v 4.5aHr LiFePO rechargeable battery user replaceable?
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What is the apparent field of view?
Asked by: Anonymous
So the Apparent Field of View does all depends on the eyepiece. This scope comes with a 40mm and 13mm eyepiece. I am not sure which series eyepiece comes in the box. I would maybe call Celestron directly to see which eyepiece it comes with, and they will be able to know what the apparent field of view is for them. Celestron's Telephone Number: 310-328-9560
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Date published: 2018-08-25

question

What is the package shipping weight and dimensions?
Asked by: Anonymous
Unfortunately we are unable to provide the Shipping Dimensions, and Weight. My apologies. The dimensions of the scope packaged in the manufacturer's box is 43 X 28 X 15 (LXWXH).
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Can this system (Evolution alt az mount/drive) be used for long tracking astro-photo exposures such as would normally be done with a wedge or equatorial mount?
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Is there a way to connect an Olympus OM-D E-M10 for astrophotography?
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Yes. You need a T-Adapter for the telescope so that it can accept T-treaded accessories. Then you need a T-mount ring that will allow you to mount the telescope onto your camera as if it were a huge telephoto lens. Both of these accessories are readily available from B&H and elsewhere. The T-Adaptor replaces the rear cell of the telescope, the T-mount ring screws into the T-adapter, and then you attach your camera to the T-mount just as you would attach any other lens. You will need to focus the telescope manually, but all of the other features of the E-M10 will work in this set up.
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