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.
- 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