Offered here is a vintage EDSCORP 4mm Orthoscopic telescope eyepiece, made in Japan and marked Or. 4mm on the black top housing. This is a compact high-power eyepiece suited for planetary, lunar, and double-star viewing, especially for collectors or users of classic telescope setups.

The eyepiece has been tested functional and is optically clear. Exterior shows light vintage handling wear from normal use, including minor marks on the chrome barrel and black top section. No caps or storage case are included.

A nice addition for anyone restoring a classic telescope kit, completing an Edmund Scientific/EDSCORP eyepiece set, or collecting vintage Japanese orthoscopic optics.

Item Specifics

• 🔭 Brand: EDSCORP
• 🌌 Type: Telescope Eyepiece
• 🔎 Focal Length: 4mm
• 🧪 Optical Design: Orthoscopic, marked “Or.”
• 🇯🇵 Country/Region of Manufacture: Japan
• ⚙️ Barrel Size: Appears to be vintage 0.965 in / 24.5mm style
• 🎯 Use: High-power planetary, lunar, and double-star observing
• ✨ Optics: Clear
• ✅ Tested: Functional
• 🎨 Color: Black top with chrome/silver barrel
• 📦 Included: Eyepiece only
• 🕰️ Era: Vintage, likely 1960s–1970s Edmund Scientific period

Condition

Used vintage condition. Tested functional with optically clear glass. Light cosmetic wear. Eyepiece only.

Additional Details

Seller’s Note: Please review all photos carefully; the exact item shown is the item you will receive. Any accessories, packaging, or parts not shown in the photos are not included.

Keywords

EDSCORP 4mm eyepiece, Edmund Scientific eyepiece, orthoscopic telescope eyepiece, Or 4mm, vintage Japan eyepiece, Japanese telescope eyepiece, 0.965 telescope eyepiece, 24.5mm eyepiece, Circle T style ortho, Tani orthoscopic, planetary eyepiece, lunar eyepiece, vintage astronomy accessory