Skywatcher Dual Speed 2'' Crayford FocuserDesigned to retro fit to the Explorer 150 200 250 300P Newtonian Reflectors originally supplied with a 2" single speed focuser. Gear Ratio 10: 1. * Eyepiece not supplied

solar system objects and asterism•Re-designed drive base and drive mechanics - Quiet operation

Optical performance is impressive

In addition to Celestron’s new optimized optical design

Requires only light pressure on the ratchet lever to have an extremely strong hold

Each eyepiece features a four-element design with a 52º apparent field of view

including TheSkyX

The diffraction effect is so sensitive to changes in focus

When it comes to deep sky objects

This set is ideal for beginners who are just starting out with colour imaging

Unlike stars

The Semi-APO filter benefits from all the host of world-class Baader filter attributes

LIMITING STELLAR MAGNITUDE: 14