Technical details
| Eye relief |
20 mm |
| Apparent field of view |
70 ° |
| Field stop diameter |
36.2 mm |
| Filter size |
48 mm |
| Focal length range (f-f) |
30 mm |
| Eyepiece ring type |
Helicoid |
| Attachment diameter |
50.8 mm |
12.192 cm (4.8 ") x 3.0", 740g, black
The PENTAX XW 30 eyepiece provides a focal length of 30mm, long eye relief (20mm), and is exclusively designed for astronomical observations. Within its JIS Class 4 weather-proof construction, this high-performance eyepiece features high-refraction, low-dispersion lanthanum glass elements and PENTAX-original multi-layer coating for bright, high-resolution images with minimal aberrations and distortions. The PENTAX XW 30 eyepiece is compatible with telescopes that feature a 2 inch focuser.