Long Perng 1.25" 62º RPL Orthoscopic Lanthanum Eyepiece -25mm
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Long Perng's "RPL" Orthoscopic Lanthanum eyepieces are a Japanese-design improvement by Kitakaru San of the traditional orthoscopic design, providing a wider field of view with negligible chromatic aberration. These eyepieces minimize optical distortions to deliver crisp views of the moon, planets, and compact deep-sky objects.
With a focal length of 25mm, this 1.25" (31.7mm) 4-element eyepiece offers a 62-degree apparent field of view with 14mm of designed eye relief. 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 with a tapered nosepiece to help prevent the eyepiece from slipping when not fully secure in the focuser. The Long Perng 25mm RPL eyepiece weighs just 171g and has a length of about 3.74" (95mm) 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's "RPL" Orthoscopic Lanthanum eyepieces are a Japanese-design improvement by Kitakaru San of the traditional orthoscopic design, providing a wider field of view with negligible chromatic aberration. These eyepieces minimize optical distortions to deliver crisp views of the moon, planets, and compact deep-sky objects.
With a focal length of 25mm, this 1.25" (31.7mm) 4-element eyepiece offers a 62-degree apparent field of view with 14mm of designed eye relief. 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 with a tapered nosepiece to help prevent the eyepiece from slipping when not fully secure in the focuser. The Long Perng 25mm RPL eyepiece weighs just 171g and has a length of about 3.74" (95mm) 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 | Orthoscopic Lanthanum |
| Focal Length | 25mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 62° |
| Eye Relief (Designed) | 14mm |
| Filter Threads | 1.25" Filter Thread (M28.6 x 0.6) |
| Coatings | Fully Multi-coated |
| Lens Elements | 4 |
| Lens Groups | 2 |
| Blackened Lens Edges | Yes |
| Barrel Type | Tapered barrel |
| Protective Storage Container Included | No |
| Protective Plastic Storage Container Size (Sold Separately) | Agena 52x80mm |
| Optical Design | Orthoscopic |
| Height (With Eyeguard Extended) | 95 mm / 3.74in |
| Maximum Width | 47mm / 1.85in |
| End Caps | 2 |
| Eye Lens Diameter | 21mm |
| Parfocal | Yes |
| Rubber Eye Guard | Yes |
| Weight | 171 g / 6.0 oz |
Long Perng's "RPL" Orthoscopic Lanthanum eyepieces are a Japanese-design improvement by Kitakaru San of the traditional orthoscopic design, providing a wider field of view with negligible chromatic aberration. These eyepieces minimize optical distortions to deliver crisp views of the moon, planets, and compact deep-sky objects.
With a focal length of 25mm, this 1.25" (31.7mm) 4-element eyepiece offers a 62-degree apparent field of view with 14mm of designed eye relief. 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 with a tapered nosepiece to help prevent the eyepiece from slipping when not fully secure in the focuser. The Long Perng 25mm RPL eyepiece weighs just 171g and has a length of about 3.74" (95mm) 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 | Orthoscopic Lanthanum |
| Focal Length | 25mm |
| Barrel Size | 1.25" (31.7mm) |
| Apparent Field of View (Mfg Specified) | 62° |
| Eye Relief (Designed) | 14mm |
| Filter Threads | 1.25" Filter Thread (M28.6 x 0.6) |
| Coatings | Fully Multi-coated |
| Lens Elements | 4 |
| Lens Groups | 2 |
| Blackened Lens Edges | Yes |
| Barrel Type | Tapered barrel |
| Protective Storage Container Included | No |
| Protective Plastic Storage Container Size (Sold Separately) | Agena 52x80mm |
| Optical Design | Orthoscopic |
| Height (With Eyeguard Extended) | 95 mm / 3.74in |
| Maximum Width | 47mm / 1.85in |
| End Caps | 2 |
| Eye Lens Diameter | 21mm |
| Parfocal | Yes |
| Rubber Eye Guard | Yes |
| Weight | 171 g / 6.0 oz |
Long Perng 1.25" 62º RPL Orthoscopic Lanthanum Eyepiece -25mm