Exactly what do the well known mirror makers use to test their optics as final figureing is reached? Is the focalt usually the main instrument or just a compliment to something more such as an interferometer. Is the focault usually accurate enough if it is the only test methoud at say F/4? Thanks
optical testing methods
Started by ddrake, 11/04/2005 01:09PM
Posted 11/04/2005 01:09PM
Opening Post
Funding Member
