This 2 inch filter wheel lets you use up to 5 different filters and change them within just a few seconds; you can also leave your filters mounted in the filter wheel; as they are optimally protected from dust and damage there
The telescope side of the filter wheel comes supplied with a 2 inch adapter; allowing you to quickly and easily attach it to your focuser; the very short design also permits the use of devices with short back focus such as Newton or Dobson telescopes
Please note: your focuser will require 22.5mm of inward focusing distance from the normal focus position to compensate for the thickness of the filter wheel
Each Astromania 2inch O-III Filter is individually inspected and proudly inscribed with the percentage of light transmittance of the two O-III emission lines
2Inch O-III Filter greatly enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; allows high-contrast imaging even in areas with strong light pollution