1.25-inch Barrel

The 1.25-inch barrel is the standard eyepiece fitting on most telescopes, and it offers the widest choice of focal lengths. This collection covers Explore Scientific 1.25-inch eyepieces and filters, for observers building a versatile case across lunar, planetary, and deep-sky viewing.

Choose shorter focal lengths for high-power planetary detail, longer ones for wider, low-power framing. Variable polarizing and neutral density filters tame lunar glare, all sized to drop into a 1.25-inch focuser or diagonal.

Need help matching focal length to your scope? See our Best Telescope Eyepieces guide.