One of the major benefits of apochromatic refractor designs with ED (extra-low dispersion) glass is virtually the complete absence of chromatic aberration in which all colors do not focus the same way. This is a significant benefit of the Sky-Watcher Evostar 150DX. It is an excellent choice for deep sky and planetary observation due to its f/8 focal ratio and superior optics including but not limited to the ED glass as well as Sky-Watcher's Metallic High-Transmission Coatings to remove any false color. The triple baffles also remove any stray light so any photons hitting the camera sensor are not unwanted or stray light.

The doublet apochromatic design of the Sky-Watcher Evostar 150DX ED makes it more lightweight due to fewer optical components and glass. This results in only needing a less expensive mount with a lower payload.

• The ED glass component of the Sky-Watcher Evostar 150DX virtually removes all chromatic aberration ensuring all colors refract as equally as possible to remove unwanted false color.
• Excellent choice for planetary observation due to its f/8 focal ratio.
• Metallic High-Transmission Coatings on top of the ED glass remove any false color.
• Stray light is removed to ensure astrophotography exposures are clean, a major plus for long exposures.
• Lightweight design reducing demand for a mount with higher payload.
• Uses a 3.4" Helinear Rack and Pinion Focuser
• The Sky-Watcher Evostar 150DX Apochromatic Refractor comes with tube rings, D-Style dovetail and a foam lined aluminum case.