Filter,2", Set (4)

USD $70.00

Set (4) 2" Color Filters, #11,#21,#80A, ND25. 

Color filters enhance planetary imaging. Every refractive system, (lenses,correctors,eyepieces etc.) produce Chromatic Focal Shift: The different colors focus on different planes. By isolating one color more detail will become apparent. Always use a contrasting color to what you are observing; brightness is not an issue with planets. Set(4) 2" Filters 2-#11,21,80A,ND25