Training Manual . Moscow - 2005, 193 s. Foreword by . The textbook "Practical bases of precision photometry and star spectrophotometry" is written on the basis of the course of lectures given by the author since 1990 at the Faculty of Physics of Moscow State University for students of 3-5 courses of the astronomical department . The first edition of this manual under the short title "Precision Photometry" was published in 1997. It reflected the state of astrophotometry around the early 1990s. The second edition is significantly revised and supplemented with information, without which now, after the completion of the Hipparcos project and in anticipation of new large photometric works, such as the European GAIA project, it is no longer possible to navigate in rapidly developing methods and new results. Compared to the first edition, chapters on photographic photometry and CCD photometry. have been added There are many additions and clarifications to the text.. Both the lectures and the tutorial are intended primarily for students. In places where it seemed necessary to the author, the presentation more or less repeats the facts known from general courses, for which the author asks him to apologize.