SkyWatcher Quattro-6S (150/600) Newtonian reflector including coma corrector

Fast focal ratio of f/3.45!

This scope have an F/4 mirror, but the coma corrector included gives a reduction factor of 0,86x, giving a very fast F/3,45 focal ratio to the complete system. The original 600 mm focal length is also shortened to 517,5 mm, giving larger field of view. The corrector gives extremely sharp and well corrected image up to APS-C size sensors.

2'' Dual-Speed Crayford Power Focuser

The new Crayford power focuser utilises 4 precision ball bearings to support the drawtube and provide great stability and zero image shift while supporting a heavy eyepiece or camera. Moving the drawtube by the roller rather than a rack and pinion ensures exceptionally smooth operation and precise adjustability. The dual-speed feature has a second focus knob that has a 10:1-speed reduction to provide the super-fine adjustments even the most demanding users can appreciate.

Quality Mirror

It features paraboloidal primary mirrors made of Low-Expansion Borosilicate Glass resulting in substantially shorter cooling-down times.

It comes with an impressive 0.5 mm Ultra-Thin Secondary Mirror Support and light gathering power improves greatly.