Reflecting Telescopes

SkyWatcher 250 Interesting & Bringing Best-Treasures Viewing

$2,059.60

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This is the largest Skywatcher 250 telescopes are magnificent Newtonian on an equatorial mount.

A whopping 254mm /10 inches diameter gives a highest practical magnification of 508x. Appropriately paired with the solid motor driven EQ6 mount.

The Australian telescope Experts. The Best price and service for Sky-watcher Optics in Australia with guaranteed products.

The Reflecting telescopes with spherical mirrors often have a defect called "spherical aberration." Light rays from the perimeter of the spherical mirror do not focus to the same point as rays from the centre, resulting in images with less sharpness and detail. This problem is not critical for smaller Newtonians, and other reflecting telescopes with focal ratios of f/9 or higher, where the aberration is minimal. However, it becomes more noticeable in larger Newtonians and other reflectors having ratios of f/8 or lower.

For larger Newtonians, such as Sky-Watcher the spherical surface of the mirror is altered during polishing to bring the light rays onto a common focal plane. By "parabolising" the mirror, the images become sharp and detailed, and free of spherical aberration effects. Sky-Watcher parabolic mirror reflectors also feature a four-arm, secondary mirror bracket with fine supports to reduce diffraction spikes.

Accurate parabolising, although more difficult and time-consuming, is essential for large Newtonians. If you have opted for a telescope of lower f/ratio or with an aperture of 150mm or more, it is important to look for "parabolic mirror" or "paraboloidal mirror" in the specifications.They make this telescopes with the intention of bringing the treasures of the sky within reach of anyone curious enough to look up and wonder. Sky-watcher have been making telescopes since 1980, with optics of the highest quality. Sky-watcher telescopes are used for a wide range of observing, from 50mm spotting scopes right up to 150mm (6") refractors, 200mm (8") reflectors, and 250mm (10") Dobsonians. Whatever your interest, terrestrial or celestial, there is a Sky-Watcher Telescope that will suit your needs at an excellent price.

The SkyWatcher 250 Specifications: