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 and commented upon the Galilean Aramaic speech. Schöttgen's work, "Horae Ebraicae et Talmudicae", which studied the New Testament in the context of the Talmud, followed that of Lightfoot. Both scholars provided examples of differences between Galilean and Judean speech. The grammarian Gustaf Dalman identified "Galilean Aramaic," but he was doubted by Theodor Zahn. Porter (2000) notes that scholars have tended to be "vague" in describing exactly what a "Galilean dialect" entailed. Hoehner (1983) notes that the Talmud has one place with several amusing stories about Galilean dialect which indicate only a defective pronunciation of gutturals in the third and fourth