Long Perng 1.25" 55º Long Eye Relief Eyepiece - 5mm
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- Wide-field 5mm focal length with a 55-degree apparent field of view for high-magnification viewing of planets, moon, and compact deep-sky sights
- Features 7 elements in 4 groups for a flat field with minimal distortion
- Long 20mm eye relief for a comfortable viewing experience
- CNC-machined aluminum body with rubber grip, eye guards, 1.25" tapered barrel, and fully multi-coated and edge-blackened optics
Long Perng LER (Long Eye Relief) eyepieces delivers crisp high-magnification views of the moon, planets, and compact deep-sky objects. With a focal length of 5mm, this 7 element eyepiece offers a flat field across its 55-degree apparent field of view. It also features a long 20mm eye relief for comfortable viewing, even when wearing eyeglasses. All optical elements are fully multi-coated and edge blackened for maximum transmission and high contrast. The eyepiece also includes pop-down rubber eye guards to keep stray light out of your eyes.
The body is CNC machined and includes a rubber grip for easy handling and a tapered nosepiece to help prevent the eyepiece from slipping when not fully secure in the focuser. The Long Perng LER eyepiece weighs just 224g and has a length of about 111mm with eye guards fully extended.
Note: The barrel of the 1.25” Long Perng Long Eye Relief eyepieces are threaded for M28.6x0.6 filters sold by Orion – in most cases, they should be compatible with standard 1.25” filter threads from other manufacturers.
Other Information
- Country of Manufacture: Taiwan
Long Perng LER (Long Eye Relief) eyepieces delivers crisp high-magnification views of the moon, planets, and compact deep-sky objects. With a focal length of 5mm, this 7 element eyepiece offers a flat field across its 55-degree apparent field of view. It also features a long 20mm eye relief for comfortable viewing, even when wearing eyeglasses. All optical elements are fully multi-coated and edge blackened for maximum transmission and high contrast. The eyepiece also includes pop-down rubber eye guards to keep stray light out of your eyes.
The body is CNC machined and includes a rubber grip for easy handling and a tapered nosepiece to help prevent the eyepiece from slipping when not fully secure in the focuser. The Long Perng LER eyepiece weighs just 224g and has a length of about 111mm with eye guards fully extended.
Note: The barrel of the 1.25” Long Perng Long Eye Relief eyepieces are threaded for M28.6x0.6 filters sold by Orion – in most cases, they should be compatible with standard 1.25” filter threads from other manufacturers.
| Manufacturer | Long Perng |
|---|---|
| Eyepiece Series | 55º Long Eye Relief |
| Focal Length | 5mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 55° |
| Eye Relief (Designed) | 20mm |
| Filter Threads | 1.25" Filter Thread (M28.6 x 0.6) |
| Coatings | Fully Multi-Coated |
| Lens Elements | 7 |
| Lens Groups | 4 |
| Blackened Lens Edges | Yes |
| Barrel Type | Tapered barrel |
| Protective Storage Container Included | No |
| Protective Plastic Storage Container Size (Sold Separately) | Agena 52x120mm |
| Height (With Eyeguard Extended) | 111mm |
| Maximum Width | 45.5mm |
| Eye Lens Diameter | 20mm |
| Field Stop Diameter | 17.6mm |
| Weight | 224 g / 7.9 oz |
Closeout - All sales final!
- Wide-field 5mm focal length with a 55-degree apparent field of view for high-magnification viewing of planets, moon, and compact deep-sky sights
- Features 7 elements in 4 groups for a flat field with minimal distortion
- Long 20mm eye relief for a comfortable viewing experience
- CNC-machined aluminum body with rubber grip, eye guards, 1.25" tapered barrel, and fully multi-coated and edge-blackened optics
Long Perng LER (Long Eye Relief) eyepieces delivers crisp high-magnification views of the moon, planets, and compact deep-sky objects. With a focal length of 5mm, this 7 element eyepiece offers a flat field across its 55-degree apparent field of view. It also features a long 20mm eye relief for comfortable viewing, even when wearing eyeglasses. All optical elements are fully multi-coated and edge blackened for maximum transmission and high contrast. The eyepiece also includes pop-down rubber eye guards to keep stray light out of your eyes.
The body is CNC machined and includes a rubber grip for easy handling and a tapered nosepiece to help prevent the eyepiece from slipping when not fully secure in the focuser. The Long Perng LER eyepiece weighs just 224g and has a length of about 111mm with eye guards fully extended.
Note: The barrel of the 1.25” Long Perng Long Eye Relief eyepieces are threaded for M28.6x0.6 filters sold by Orion – in most cases, they should be compatible with standard 1.25” filter threads from other manufacturers.
Other Information
- Country of Manufacture: Taiwan
| Manufacturer | Long Perng |
|---|---|
| Eyepiece Series | 55º Long Eye Relief |
| Focal Length | 5mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 55° |
| Eye Relief (Designed) | 20mm |
| Filter Threads | 1.25" Filter Thread (M28.6 x 0.6) |
| Coatings | Fully Multi-Coated |
| Lens Elements | 7 |
| Lens Groups | 4 |
| Blackened Lens Edges | Yes |
| Barrel Type | Tapered barrel |
| Protective Storage Container Included | No |
| Protective Plastic Storage Container Size (Sold Separately) | Agena 52x120mm |
| Height (With Eyeguard Extended) | 111mm |
| Maximum Width | 45.5mm |
| Eye Lens Diameter | 20mm |
| Field Stop Diameter | 17.6mm |
| Weight | 224 g / 7.9 oz |