More products from the brand :Sky-Watcher

Sky-Watcher Explorer-250PDS (OTA) (f/4.7)

CHF 639

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Sky-Watcher Explorer 250PDS - The ultra-bright Newton 10″ for deep-sky enthusiasts

Visit Sky-Watcher Explorer 250PDS is a 254 mm diameter Newton telescope, designed for demanding amateur astronomers who want to explore in detail the most discrete objects in the deep sky, while enjoying excellent performance on the Moon and planets. With a 1200 mm focal length and f/4.7 focal ratio, it offers a perfect balance between brightness, field and precision.

A 254 mm mirror: an opening that changes everything

With an aperture of 25.4 cm, this telescope captures more than 1270 times more light than the human eye, revealing faint galaxies, subtle nebulae and distant clusters with astonishing clarity. The diffraction-limited parabolic mirror maintains remarkable sharpness even at high magnification, while offering optimal contrast on the lunar surface or Jupiter's cloud bands.

Precise focusing with Crayford DualSpeed

The 2″ Crayford-type focuser, mounted on ball bearings, guarantees smooth focusing even with heavy accessories such as cameras or wide-field eyepieces. The 1:10 gearing allows micrometric adjustment ideal for high-resolution photography and the perfect focus on diffuse objects.

A fast, open Newton for photography

With its f/4.7 ratio, the Explorer 250PDS is a fast instrumentideal for reducing exposure times in astrophotography. Mounted on an EQ6-R, AZ-EQ6 or equivalent, it becomes a formidable machine for capturing planetary nebulae, spiral galaxies or large Hα complexes.

Technical specifications

Features Value
Optical type Newton reflector
Mirror diameter 254 mm
Focal length 1200 mm
F/D ratio f/4.7
Focuser Crayford 2″ with 1:10 reduction and 1.25″ adapter
Theoretical resolution 0.45 arcsec
Magnitude limit 13,8
Magnification supplied ~43x (with 28 mm eyepiece included)
Eyepiece included LET 28 mm 2″
Researcher 9×50 wide-field optics
Tube structure Solid tube, marked mirror for collimation, fine spider 0.5 mm
Pipe weight with clamps 14.5 kg
Mounting Vixen dovetail with clamps

Supplied with :

  • Sky-Watcher Explorer 250PDS telescope (254/1200)
  • LET eyepiece 28 mm (2″)
  • 9×50 optical finder
  • Dovetail clamps

What you need to get started

This tube is supplied without frame. For visual use, a EQ5 or HEQ5 is a minimum. For photography, we recommend a EQ6-R or AZ-EQ6. You can also add high-magnification eyepieces, a 2x Barlow lens or a lunar filter for greater comfort during lunar observation.

Conclusion

Visit Sky-Watcher 250PDS is an excellent gateway to advanced astronomy. Bright, fast, versatile and precise, it's a wise choice for passionate visual astronomers as well as for those who want to get serious about deep-sky astrophotography.

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