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
Jose the Galilean Jose the Galilean Jose the Galilean (, Rabbi Yose HaGelili), d. 15 Av, was a Jewish sage who lived in the 1st and 2nd centuries CE. He was one of the Tannaim, the rabbis whose work was compiled in the Mishna. Jose was a contemporary and colleague of Rabbis Akiva, Tarfon, and Eleazar ben Azariah. Neither the name of his father nor the circumstances of his youth are known, though his name ("HaGelili") indicates that he was a native of Galilee. He suffered from the prejudice commonly held against the Galileans by the Judeans; on one occasion a woman who