The 10mm inverting eyepiece is used to obtain a non-inverted image, the so-called "terrestrial". In the case of astronomical observations, the orientation of the image does not matter much, but if we want to use the telescope for daytime observations, the inverting eyepiece will be a very useful addition. It can be used with any type of telescope, both refractors and reflectors. In refractors, including short focal lengths, in order to obtain a straight image, it is enough to attach the eyepiece directly in the extractor, while in reflectors it is mounted just like other glasses.
| • focal length:|| 10 mm|
| • luminaire diameter:|| 1.25 inch|
| • length:|| 75 mm|
| • weight:|| 80 g|