Optical Accessories

The 11mm 82° Series Waterproof Argon-Purged Eyepiece is a popular focal length in the upper-medium power magnification class providing both super-w...

The 14mm 82° Series Waterproof Argon-Purged Eyepiece is a popular focal length in the upper-medium power magnification class providing both super-w...

The 18mm 82° Series Waterproof Argon-Purged Eyepiece is a popular focal length in the upper-medium power magnification class providing both super-w...

The 24mm 82° Series Waterproof Argon-Purged Eyepiece is a popular focal length in the upper-medium power magnification class providing both super-w...

“I just recently purchased my first E.S. telescope after owning a couple fantastic E.S. eyepieces. I have the 6.7mm & 30mm 82° eyepieces and th...

With its particularly long eye relief of 15.9mm, the 4.5mm LER ocular from Explore Scientific’s 82° Series of Argon-Purged Waterproof Eyepieces put...

With its impressively long eye relief of 16.8mm, the 6.5mm LER ocular from Explore Scientific’s 82° Series of Argon-Purged Waterproof Eyepieces put...

With its long eye relief of 15mm, the 8.5mm LER ocular from Explore Scientific’s 82° Series of Argon-Purged Waterproof Eyepieces puts the focus on ...

Explore Ultra-Wide Eyepieces - Comfort, Quality, Value. The Explore Scientific 92° Series eyepieces are hyper-wide class oculars that can transform...

Explore Ultra-Wide Eyepieces - Comfort, Quality, Value. The Explore Scientific 92° Series eyepieces are hyper-wide class oculars that can transform...

The Explore Scientific 2-inch Dielectric-Coated Diagonal Mirror comes complete with 1.25-inch Adapter and dust covers. Solid construction and light...

The Explore Scientific 3-inch Dielectric-Coated Diagonal Mirror comes complete with 2 inch Adapter and dust covers. Solid construction and light we...

After hours at the eyepiece, you finally get to view the fruits of your astrophotography labors. The stars in the center of the field pop like bril...

Explore Scientific Nebula Filter CLS - 1.25"

Explore Scientific Nebula Filter CLS - 2.0"

Explore Scientific Nebula Filter H-Beta - 1.25"

Explore Scientific Nebula Filter H-Beta - 2.0"

Explore Scientific Nebula Filter Oxygen III - 1.25"

Explore Scientific Nebula Filter Oxygen III - 2.0"

Explore Scientific Nebula Filter UHC - 1.25"

Explore Scientific Nebula Filter UHC - 2.0"

Explore Scientific Neutral Density Filter ND 0.9 - 1.25"

Explore Scientific Neutral Density Filter ND 0.9 - 2"

2" OIII 8nm (+/-0.4nm) H-alpha 9.5nm (+/- 0.4nm) (originally designed at 10nm, but on a measured basis, it's 9.5nm.)