With the Baader Hyperion 14 and 28 mm wide "focus adjustment ring" you can shorten the focal length of the eyepiece, so that one eyepiece can function as up to four different focal length eyepieces! The table below shows the resulting focal length of the two types of fine adjustment rings for each eyepiece. For Hyperion 24 mm eyepieces the rings cannot be used!
The Baader Hyperion eyepiece is not a standard accessory for the focus adjustment ring.
| Hyperion | 14 mm ring | 28 mm ring | 14 mm + 28 mm ring |
| 21 mm | 17.6 mm | 15.5 mm | 14.0 mm |
| 17 mm | 13.1 mm | 10.8 mm | 9.2 mm |
| 13 mm | 10.8 mm | 9.2 mm | 8.1 mm |
| 10 mm | 7.9 mm | 6.7 mm | 5.8 mm |
| 8 mm | 6.0 mm | 5.0 mm | 4.3 mm |
| 5 mm | 4.0 mm | 3.2 mm | 2.6 mm |
| 3.5 mm | 2.5 mm | 2.1 mm | 1.8 mm |