In the 1¼" series we included a long eye-relief 40mm focal length in the series with a 43° apparent field. Like the 55mm, its focal plane is at the barrel edge for maximum field in the 1¼" format.
| Tele Vue Optics, Inc. | |
|---|---|
| Product Category | Telescopes |
| Product Name | Plössls 40mm 50° Apparent Field Eyepieces |
| Focal Length | 40 mm (1.57 inch) |
