Filter, 2" Green

USD $20.00
#11 yellow-green thread-in filter. M48x0.6
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;. 2"-11 (green) Recommended: Mars, Stack with 80A