The Sky-Watcher Telescope AC 90/900 EvoStar AZ-3 is a versatile refractor with excellent optical quality for its price range. Thanks to its 90 mm achromatic objective, this telescope combines brightness, contrast and ease of use in one compact system. The combination of two lenses (dublet) corrects most color errors, minimizing disturbing color errors in observation.
With a focal length of 900 mm and an f/10 ratio, the EvoStar delivers sharp, high-contrast images - ideal for beginners who want to view the Moon, Jupiter or Saturn without worrying about complicated settings. Clarity is also impressive: star clusters and the best-known nebulae, such as the Orion Nebula, come into focus beautifully under dark skies.
The telescope is light and easy to operate, making it quick to handle even young users. The stable AZ-3 mount makes aiming and tracking especially smooth. Thanks to the slip clutch and flexible slow-motion axes, you can move precisely without jerking or vibration, which is especially important at high magnifications. The mount is 360° rotatable and height adjustable from 71 to 121 cm, allowing for both sitting and standing observing.
The included Amici prism provides an upright, true-to-life image, making this telescope suitable not only for astronomical observations, but also for nature observation daytime. So you use it at night for the Moon and planets, and during the day as a spotting scope to view birds or distant landscapes.
If you buy this telescope from Telescoop.com, then you get more than just the instrument. We supply with each telescope the 80-page beginner's manual “Telescope ABC.”, and offer personalized support for installation and initial use - so you can start observing without frustration.
Application:
The Sky-Watcher AC 90/900 EvoStar AZ-3 is the ideal choice for beginners who want a classic, low-maintenance system that allows them to observe both day and night.
You can with it:
- Exploring the Moon with razor-sharp details of craters and maria
- Viewing planets such as Jupiter and Saturn, including the rings and moons
- Seeing bright deep-sky objects such as the Orion Nebula and the Pleiades
- Landscape and nature observations do thanks to the upright image
Astrophotography is not recommended with this setup, but visually it offers an excellent balance between price, stability and optical quality.
Specifications:
Optics
Type: Refractor (Achromat)
Opening: 90 mm
Focal length: 900 mm
Aperture ratio: f/10
Resolution: 1.28″
Boundary magnitude: 11.6
Light output: 170×
Max. useful magnification: 180×
Tube construction: closed tube
Tube weight: 2.5 kg
Focuser: rack-type, 1.25″ connection
Mount
Type: azimuthal
Design: AZ-3
GoTo control: no
Carrying capacity: 5 kg
Tripod
Material: aluminum
Height: 71-121 cm
Accessory holder: yes
Accessories
- Eyepieces 25 mm and 10 mm (1.25″)
- 6×30 viewfinder
- Amici prism 1.25″ (45° upright image)
- Two slow-motion cables
- Beginner's Guide Telescope ABC
General
Total weight: 11.7 kg
Series: AZ-3
Special recommendation: yes







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