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 dialect short name Yeshu for Jesus in the Talmud was 'almost certainly' a dialect form of Yeshua, based on the swallowing of the ayin noted by Paul Billerbeck, but most scholars follow the traditional understanding of the name as a polemical reduction. Galilean dialect The term Galilean dialect generally refers to the form of Jewish Palestinian Aramaic spoken by people in Galilee during the late Second Temple period, for example at the time of Jesus and the disciples, as distinct from a Judean dialect spoken in Jerusalem. The Aramaic of Jesus, as recorded in the Gospels, gives various examples of Aramaic