Long Perng 2" 62º RPL Orthoscopic Lanthanum Eyepiece -30mm
Ships by Next Business Day
Contiguous US Customers:
All items we sell ship for free within the Contiguous US. Shipping will be via the cheapest shipping method which will vary depending on the items in your order. During checkout, you may also be shown other optional faster shipping choices.
US Customers in Hawaii and Alaska:
Free shipping applies to almost all products. A few large telescopes and mounts are excluded from this free shipping offer. For these items, please contact us to obtain a shipping quote before you check out using the online shopping cart.
International Customers:
Free shipping does not apply to international orders. During check-out, you will be presented with several shipping choices and costs. However, the export of some items may be restricted outside the US due to size or manufacturer restrictions.
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 40mm, this 2" 4-element eyepiece offers a 65-degree apparent field of view with 20mm of designed eye relief. All optical elements are fully multi-coated to enhance light transmission and improve contrast.
The eyepiece also includes pop-down rubber eye guards to keep stray light and improve viewing comfort. 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 40mm RPL eyepiece weighs just 407g (14.4 oz) and has a length of about 5.4" (137mm) with eye guards fully extended.
Note: The barrel of the 2" (50.8mm) Long Perng Long Eye Relief eyepieces are threaded for M48x0.75 filters sold by Orion – in most cases, they should be compatible with standard 2” filter threads from other manufacturers.
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Eyepiece Series | Orthoscopic Lanthanum |
| Focal Length | 30mm |
| Barrel Size | 2" (50.8mm) |
| Apparent Field of View (Mfg Specified) | 62° |
| Eye Relief (Designed) | 15 mm |
| Filter Threads | 2" Filter Thread (M48x0.6) |
| Coatings | Fully Multi-coated |
| Lens Elements | 4 |
| Lens Groups | 2 |
| Blackened Lens Edges | Yes |
| Barrel Type | Tapered barrel |
| Protective Plastic Storage Container | Yes - Free Agena Eyepiece Container |
| Protective Plastic Storage Container Size | Agena 65x120mm |
| Optical Design | Orthoscopic |
| Height (Without Eyeguard) | 118 mm / 4.5in |
| Maximum Width | 55 mm / 2.17in |
| End Caps | 2 |
| Eye Lens Diameter | 23mm |
| Parfocal | Yes |
| Rubber Eye Guard | Yes |
| Weight | 273 g / 9.6 oz |
| Hide Found a better Shipped Price on Frontend? | No |
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 40mm, this 2" 4-element eyepiece offers a 65-degree apparent field of view with 20mm of designed eye relief. All optical elements are fully multi-coated to enhance light transmission and improve contrast.
The eyepiece also includes pop-down rubber eye guards to keep stray light and improve viewing comfort. 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 40mm RPL eyepiece weighs just 407g (14.4 oz) and has a length of about 5.4" (137mm) with eye guards fully extended.
Note: The barrel of the 2" (50.8mm) Long Perng Long Eye Relief eyepieces are threaded for M48x0.75 filters sold by Orion – in most cases, they should be compatible with standard 2” filter threads from other manufacturers.
| Product Banner Type | new |
|---|---|
| Free Shipping Graphic | Free US Shipping |
| Eyepiece Series | Orthoscopic Lanthanum |
| Focal Length | 30mm |
| Barrel Size | 2" (50.8mm) |
| Apparent Field of View (Mfg Specified) | 62° |
| Eye Relief (Designed) | 15 mm |
| Filter Threads | 2" Filter Thread (M48x0.6) |
| Coatings | Fully Multi-coated |
| Lens Elements | 4 |
| Lens Groups | 2 |
| Blackened Lens Edges | Yes |
| Barrel Type | Tapered barrel |
| Protective Plastic Storage Container | Yes - Free Agena Eyepiece Container |
| Protective Plastic Storage Container Size | Agena 65x120mm |
| Optical Design | Orthoscopic |
| Height (Without Eyeguard) | 118 mm / 4.5in |
| Maximum Width | 55 mm / 2.17in |
| End Caps | 2 |
| Eye Lens Diameter | 23mm |
| Parfocal | Yes |
| Rubber Eye Guard | Yes |
| Weight | 273 g / 9.6 oz |
| Hide Found a better Shipped Price on Frontend? | No |
Long Perng 2" 62º RPL Orthoscopic Lanthanum Eyepiece -30mm # E30W-AU