Eyepiece (ver 2.03) Abandoned Freeware Eyepiece computes nebular filter and telescope/eyepiece performance. You enter information about your telescope, then you can test different eyepieces to see how they would affect your ability to view celestial objects. Uses a keyboard or a mouse. A handy program for persons new to astronomy. Useful for testing combinations before purchasing a new telescope or set of eyepieces. Program also includes interesting information about viewing celestial objects with your eyepiece selections. NOTE: The EXE files have been patched to fix the "Runtime200" error (the unpatched files have been renamed with an ".old" extension).