NexStar EVOLUTION Series Telescopes INSTRUCTION MANUAL For Models: 12090 6” • 12091 8” • 12092 9.
Table of Contents Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Part List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Assembly and Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Overview 12 13 1 2 18 19 20 3 4 5 6 14 15 16 17 21 22 23 7 8 24 25 9 10 11 26 Part List Optical Tube Assembly 1.25” Star Diagonal 40mm Plössl Eyepiece 13mm Plössl Eyepiece StarPointer Red Dot Finderscope Fork Mount Tripod Accessory Tray AC Adapter with USA, EU, UK and AU plugs 4 I 1 Altitude Clutch Knob 2 Power & Charging L.E.D. 3 Carry Handle 4 WiFi L.E.D.
Prerequisites Assembly and Setup • AC outlet to charge the telescope with the supplied AC power adapter. Remove the parts from their shipping cartons and go over all the items in the parts list. Keep all of the original packaging so it can be used to transport the telescope safely. • An Apple iOS device with iOS 7.0 and later or an Android device with Android 4.0 if used without the included NexStar+ hand control. Set the fork arm mount on a sturdy flat surface.
Telescope Optical Tube The 6” optical tube is preinstalled with the telescope. The 8” and 9.25” models require installing the optical tube onto the fork arm mount. 1. Unlock the altitude clutch by loosening the orange altitude clutch lock knob. 2. Rotate the altitude axis until the quick release knob faces downward. Eyepiece The eyepiece is the optical element that magnifies the image focused by the telescope. The eyepiece fits into the star diagonal.
3. Launch Celestron SkyPortal on your device and select “Connect.” Arrows will appear on your screen for UP/ DOWN and LEFT/RIGHT. These motions are referred to as altitude and azimuth, respectively. about your observing site. All you have to do is center and align 3 bright stars seen in the sky. SkyPortal’s advanced mount-modeling provides improved pointing accuracy compared to standard computerized hand control systems for telescopes.
3 named stars in the telescope’s eyepiece. The star is selected on your screen and centered with the on-screen direction arrows. • Hibernate Enabled - Allows the telescope alignment to be saved when shutting the telescope off or disconnecting and exiting the app. Down is default enabled so the star moves in the same direction as the direction button. •R everse Left and Right - Reverses left and right directions in the three lowest slew speeds.
Getting Started – Using the NexStar+ Control This section of the manual can be skipped if you are using a smart device with WiFi instead of the NexStar+ controller. The NexStar Evolution includes a computerized hand control to operate the telescope directly without the use of the WiFi connection to Celestron SkyPortal. The hand control can be plugged into any of the 4 AUX ports on the mount. 1.
the eyepiece using the direction keys on the hand controller and press the ALIGN button. This will accept the star as the first alignment position. (There is no need to adjust the slewing rate of the motors after each alignment step. The NexStar automatically selects the best slewing rate for aligning objects in both the finderscope and the eyepiece). 7. For the second alignment object, choose a bright star or planet as far as possible from the first alignment object.
NexStar+ Hand Control for NexStar Evolution Menu Tree Advanced Menu Tree Menu Scope Setup Tracking Mode EQ North Rate Anti-Backlash Alt Negative Off AZM Positive Sedereal AZM Negative Slew Limits Lunar Hand Control Light Control Alt Positive Alt - Az Solar Saved Site Custom Site City Database EQ South View Time-Site Setup Time-Site Filter Limits Direction Button Keypad Level Alt Button AZM Button Display Level Goto Approach Scrolling Menu AH Approach AZM Approach Toggle Bold F
Telescope Maintenance Your NexStar Evolution telescope requires little maintenance. There are a few things to remember that will ensure your telescope performs at its best. Dew Prevention Schmidt-Cassegrain telescopes are especially susceptible to condensation forming on the front corrector lens because the glass is immediately exposed to the outside air, just like the windshield on your car. If the temperature outside drops below the dew point, dew may form on the corrector within minutes.
Appendix A: Specifications NexStar Evolution 8 Telescope Mount Mount Type Computerized Altitude-Azimuth Optical Design Schmidt Cassegrain Worm Gears Brass worm gears with ball bearings Aperture 203.2 mm Worm Wheels Stainless steel 146mm diameter, 180 teeth Focal Length 2032 mm Internal Battery 9.6V, 4.5Ah lithium iron phosphate battery (LiFePO4) Focal Ratio 10 Max Power Consumption Up to 4.
Appendix C: L.E.D. Status NexStar Evolution 9.25 Telescope Optical Deisgn Schmidt-Cassegrain Aperture 235 mm Focal Length 2350 mm Focal Ratio 10 L.E.D.
purchased from a Celestron’s International Distributor or Authorized Celestron Dealer in the specific country. Please contact them for any warranty service. FCC Note: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
