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3D Astronomy 1.25" L-O-A Neutral Eyepiece - 21mm
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Brand | 3D Astronomy |
Part Number | E-3D-NEU21 |
Availability | |
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Product Info
Manufacturer Description
- 1.25” eyepiece of 21 mm focal length, 65-degree apparent field of view, and generous 18 mm of eye relief for comfortable observing during long sessions. Fully multicoated.
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Specifications
Apparent Field of View | 65° |
Barrel Size | 1.25" (31.7mm) |
Bolt Case Included | Yes - Manufacturer Supplied |
Bolt Case Size | Replacement: Agena 42x60mm |
Coatings | Fully Multi-Coated |
End Caps | 2 |
Eye Relief by Design | 18mm |
Filter Threads | Standard 1.25" Filter Thread (M28.5 x 0.6) |
Focal Length | 21mm |
Lens Elements | 5 |
Lens Groups | 3 |
Rubber Eye Guard | Yes |
Eyepiece Weight | 3.60oz (102.06g) |
Blackened Lens Edges | Yes |
Manufacturer | 3D Astronomy |
Eyepiece Focal Length | 20.1mm - 30mm |
Eyepiece Field of View | 61 - 70 degrees |
Eyepiece Series | L-O-A 3D Eyepiece |
Barrel Type | Smooth sided |