2 inch Kellner wide field eyepices with comfortable viewing position; Kellner eyepieces are a further development of the classical Kellner design; they have a more comfortable viewing position and better off-axis definition
If high transmission is essential Kellner eyepieces are highly recommended; the Kellner eyepiece design uses a minimum of glass-air surfaces
The Modified Achromatic design features an optical advancement over the traditional Kellner and gives sharp; faithful lunar planetary and deep-space images
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
Especially useful for large aperture telescopes through which the light of the Moon can be extremely overwhelming; allowing just for the Double Ionized Oxygen lines between 496nm to 501nm to pass through at 95 percent