Newtonian telescope secondary mirror. This design reduces the size and cost of the telescope with a shorter overall telescope tube length (with the corrector extending the focal length in a "telephoto" type layout) combined with a less costly spherical mirror. Commercially produced versions of this design have been noted to be optically compromised due to the difficulty of producing a correctly shaped sub-aperture corrector in a telescope targeted at the inexpensive end of the telescope market. Newtonian telescope The Newtonian telescope, also called the Newtonian reflector or just the Newtonian, is a type of reflecting telescope invented by the English scientist Sir
Galilean the ability to manipulate gravity. The most notable member of this species is Gravattack. Galilean Generically, a Galilean is an inhabitant of Galilee. The New Testament notes that the Apostle Peter's accent gave him away as a Galilean (Matthew 26:73 and Mark 14:70). The Galilean dialect referred to in the New Testament was a form of Jewish Aramaic spoken by people in Galilee from the late Second Temple period through the Apostolic Age . Later the term was used to refer to the early Christians by Roman emperors Julian and Marcus Aurelius, among others. After some early expeditions to Galilee