TS-Optics 50mm 2" ERFLE eyepiece This 5 element rich-field eyepiece in Erfle design offers good field definition, a wide field of view and a comfortable viewing position. Its quality coatings prevent reflexions and lead to a bright image.
It is recommended for slower systems like RC, ACF, Schmidt-Cassegrain and EHD telescopes and Achromats from f/7 and longer.
With its apparent field of view of 52°, even larger nebulae become visible. A 150/1200 mm telescope with this eyepiece has a magnification of 24x and a true field of view of more than 2° - this is four times the diameter of the moon!
Further advantages - Fully multi-coated (FMC)
- Blackened lens edges
- Long eye relief
- 2" filter thread
Delivery contents- TS-Optics 50mm Erfle eyepiece
- Dust caps on both sides
Products specifications
| Lenses / groups | 5 / 3 |
| Field of view | 52° |
| Focal length | 50 mm |
| Eye relief | 40 mm |
| Barrel size / Filter thread | 2" with filterthread |
| Eyegard | rubber, foldable |
| Field stop | 47 mm |
| Coating | multicoating on all glass-air-surfaces |
| Special | blackened lens edges |
| Type of eyepiece | Erfle |
