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Ultimate Telescope Collimation

John Deitz has been building and using telescopes for over 50 years, having ground his first mirror at age 13. Here he reveals his technique for the ultimate alignment or collimation of the optics in your telescope. Alignment of the mirrors with arc second accuracy is essential to maintaining performance of your telescope. The technique requires an autocollimation eyepiece which can be homemade or purchased and a light situated at the rear of the primary mirror after a small part of the reflective surface of the primary has been removed. In practice the Deitz method is superior to all other methods of telescope optical alignment. It can be utilized on commercial or home built telescopes of various designs. John is expanding the technique to a variety of designs starting with the Newtonian.