Sky-Watcher Evostar-90 Telescope - AZ3

The telescope has a fixed focal length of 900mm. With the included 10mm eyepiece, the maximum magnification is 90x (900mm / 10mm). The product data lists a magnification of 180x, which is likely achievable with an additional optical accessory like a Barlow lens.

While technically possible, it is not recommended to use refractors for direct solar viewing without a proper solar filter. For terrestrial viewing, the image may be inverted or reversed, depending on any additional optics used.

The 25mm eyepiece provides lower magnification (36x: 900mm / 25mm) and a wider field of view, suitable for general scanning. The 10mm eyepiece provides higher magnification (90x: 900mm / 10mm) for viewing finer details on the Moon and planets.

While you might be able to see brighter deep-sky objects like the Andromeda Galaxy or the Orion Nebula under dark skies, this telescope's strength lies in its detailed views of the Moon and planets due to its focal length and aperture. Larger aperture telescopes are generally better suited for faint deep-sky objects.

During daylight, point the main telescope at a distant object (like a treetop or telephone pole). Then, adjust the finderscope's position using its adjustment screws until it also centers the same object. This ensures that when you look through the finderscope at night, you'll easily locate objects that the main telescope can then magnify.

The total weight of the telescope, including the mount and tripod, is approximately 10 kg.

Ensure the focuser is properly adjusted. Check that the eyepiece is securely inserted. Verify the objective lens is clean.

Slightly loosen the mount's control knobs to allow for smoother movement. Practice making small, deliberate adjustments.

This is chromatic aberration, inherent to some degree in refractor telescopes. Ensure you are not observing in poor atmospheric conditions. The achromatic design minimizes this, but it can still be noticeable at very high magnifications.

Ensure the tripod legs are fully extended and locked, and the spreader is in place. Check that all mount locking knobs are tightened appropriately.