Skywatcher Explorer 250PDS - 10" f/4.8 Newtonian - OTA with 2" 1:10 Crayford

Sky-Watcher 10" f/4.8 Newtonian Telescope - OTA

250 mm aperture show you thousands of nebulae, star clusters and galaxies. The image brightness of the powerful Newtonian optics allows you to zoom in on compact nebulae even higher to see more details. The image remains bright and rich in contrast.

The moderate focal ratio of f/4.8 allows the use of a relatively compact secondary mirror. This and the proven, diffraction-limited parabolic mirror also make enjoyable planetary observations possible. Up to about 375x magnification can be achieved without any problems and without having to worry about blurring caused by the optics.

The new 2" Crayford focuser with 10:1 dual speed enables highly accurate focusing for crisp astrophotography and offers enough space for easy connection of all common cameras on the market. Furthermore, the mechanical stability is very high. Even cameras with more than 2 kg weight are still held well. The scope of delivery includes a reduction to 1.25" barrel size.

Due to physical reasons, a fast Newtonian optics produces distorted stars in the peripheral regions, this is the Newtonian coma. This telescope is also well prepared for astrophotography, because the telescope can accommodate suitable coma correctors which compensate for this effect and lead to pinpoint stars across the field of view. It works for both observation and astrophotography.

The advantages of Explorer-250PDS:

diffraction limited parabolic optics for sharp and high-contrast imaging

2" 1:10 dual-speed Crayford focuser with M54 internal thread - ideal for astrophotography

enough backfocus for all common cameras

solid metal tube with high stiffness

well dimensioned secondary mirror with 63 mm minor axis for a good illumination

easy use of coma correctors

Astrophotographic results obtained with this telescope on Astrobin

Here you can find some astrophotographs made with this telescope model: Link to Astrobin

Astrophotographic results obtained with this telescope on Astrobin

Here you can find some astrophotographs made with this telescope model: Link to Astrobin

Safety informations: PDF Download