User Manual for Meade StarNavigator NG 90mm f 13.9 Maksutov-Cassegrain GoTo Telescope Click to enlarge the picture
Contents of the user manual for the Meade StarNavigator NG 90mm f 13.9
- Product category: Catadioptrics (Cassegrains) Meade
- Brand: Meade
- 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 Meade Catadioptrics (Cassegrains)
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User manual for the Meade StarNavigator NG 90mm f 13.9 contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any Meade product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official Meade user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a Meade product will considerably shorten its lifespan!
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Product description Meade Instruments' compact StarNavigator NG 90mm f/13.9 Maksutov-Cassegrain GoTo Telescope is ideal for users who want a portable yet powerful observation platform that is able to achieve high magnifications for detailed views of the Moon and planets and has the ability to reach out past our solar system to observe brighter deep-sky objects such as nebulae and galaxies. The compact and powerful Maksutov design uses a front corrector plate with a convex meniscus lens to correct off-axis aberrations, like comas, and chromatic aberration to produce images with true-color rendition. The nature of the lens results in a smaller secondary mirror—limiting obstruction and increasing contrast, while eliminating the need for periodic collimation. This optical path results in a slower focal ratio and narrower field of view versus a similar Schmidt-Cassegrain variant, but the optical benefits make this an ideal scope for all types of celestial observations.Driving the dual-axis DC servo motors in the single-arm fork mount is the AudioStar hand controller. This update to their iconic AutoStar enables quick and easy setup and alignment to get you observing faster, while offering guided tours and audio commentary on 500 of its over 30,000 objects in the internal database. For those who want to use it for astrophotography, an internal mirror flips down to direct the light path straight back for prime-focus photography using a DSLR camera body and optional adapters. - Optical Performance
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- 90mm aperture
- f/13.9 focal ratio
- 1250mm focal length
- Maksutov-Cassegrain optical configuration
- Front convex meniscus lens corrects spherical and chromatic aberrations and comas (off-axis aberrations) across the entire field of view
- Smaller secondary mirror versus Schmidt-Cassegrains reduces obstructions and increases contrast
- Resolution: 1.3 arcsec
- Internal flip mirror
- Single-speed internal focuser
- Vixen-style dovetail plate
- AudioStar Controller
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- 2-line LED display
- 20-key alphanumeric keypad, red LED backlight
- 68HC11, 8MHz processor
- Built-in red utility light
- 30,000+ object database
- User-friendly menu-driven system navigation
- Slew speeds: 1x, 2x, 8x, 16x, 64x, 0.5°/sec, 1°/sec, 1.5°/sec, 4°/sec (max)
- Assisted alignment procedures: Easy (Two-star), One-star, Two-star, Three-star
- Customizable guided tours for specific date, time, and location
- Built-in speaker provides descriptions of over 500 objects including scientific data and history
- Projects events to plan future astronomy sessions such as sunrise/sunset, Moon phases/moonrise/moonset, meteor showers, lunar/solar eclipses, equinoxes/solstices
- Backlash compensation allows user to train out the intrinsic play between gears to improve GoTo and tracking accuracy
- Powered by mount to be lighter and easier to use
- 24" coiled cord
- Updatable via Internet using RS-232 port
Database Details:- Solar system, including Moon, Sun, planets
- Comets and asteroids
- 88 major constellations
- Popular named objects
- Galaxies, quasars, and nebulae
- Multiple catalogs including Messier, Caldwell, and NGC
- Stars, including named stars, SAO catalog, double stars, variable stars
- Satellites, including the International Space Station (ISS) and Hubble Space Telescope (HST)
- User-defined astronomical and terrestrial objects
Dimensions:- Length: 6.6" (17cm)
- Width, top: 3.2" 80cm)
- Width, bottom: 2.25" (57cm)
- Depth: 0.8" (21cm)
- Weight: 17.9 oz (508g)
- Internal Flip Mirror
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- 90° flip mechanism enables easy change of optical path
- Mirror down: Straight-through light path to back for prime-focus astrophotography or imaging with optional accessories
- Mirror up: 1.25" eyepiece holder on top accepts most astronomical eyepieces
- When used together for astroimaging, flip mirror up to check/adjust tracking, then flip down for image capture
- When up, the mirror acts as a star diagonal to correct image horizontally for use as a terrestrial spotting scope
- Mount and Tripod
- Mount:
- Single fork-arm motorized alt-azimuth
- Dual-axis DC servo motors provide smooth and accurate variable-rate tracking
- Vixen-style dovetail saddle
- Runs on eight AA user-supplied batteries
Tripod:- Adjustable height
- Aluminum alloy legs, two sections
- Leg-locking plate for additional stability
- Included Accessories
- Eyepieces:
- 1.25"-diameter barrel
- Accept most 1.25" eyepiece filters
- 9mm eyepiece produces 139x
- 26mm eyepiece produces 48x
Diagonal:- 90° angle places the user's head in a comfortable viewing position when the scope is aimed directly overhead
- 1.25" holder accepts any 1.25" eyepiece, Barlow lens, or other accessory
Finder:- Unmagnified view ensures a wide field of view to aid in fast alignment
- Simple center red aiming dot won't obscure small or dim objects
- Variable-intensity reticle preserves night-adjusted vision
UPC: 709942997965 In the Box Meade StarNavigator NG 90mm f/13.9 Maksutov-Cassegrain GoTo Telescope AudioStar GoTo Hand Controller 9mm Eyepiece 26mm Eyepiece 90° Star Diagonal Red-Dot Finder with Bracket Bubble Level/Compass AudioStar Software DVD Limited 1-Year Warranty Table of Contents
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Technical parametersMeade StarNavigator NG Specs | | | Optical Design | Maksutov Cassegrain | | Aperture | 90 mm / 3.5" | | Focal Length | 1250 mm | | Focal Ratio | f/13.9 | | Focuser | Single-Speed Internal | | Eyepiece Barrel Diameter | 1.25" | | Diagonal | 90
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