9x50 finder scope with 50mm objective lens diameter; brighter DSOs directly visible
Enjoy both comfortable 90 degree viewing angle and upright with non-reversed image; integrated prism displays objects in similar way to that with binoculars or spotting scopes; makes using a star map much easier and observe near zenith at relaxed angle
The achromatic optics provide a bright; true to life image at 9x magnification; in addition; the optical surfaces have been multi coated to prevent irritating reflections
1.25 inch O-III Filter greatly enhances contrast during visual observation of gaseous and planetary nebulae in all sky conditions; astrophotographic 1.25 inch filter 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; allow just for the double Ionized Oxygen lines between 496nm to 501nm to pass through at 95 percent