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... Previous: Why Indexing the Sky is Desirable . ... An alternative algorithm, proposed here, is based on covering the sky with pixels of approximately equal area, and assigning a unique integer to each pixel. ... For each table, the pixel code value corresponding to the central position (RA, Dec) of each source is computed and inserted into a new column called PCODE. ... This cannot be the primary index of a table since PCODE values are not necessarily unique: one pixel may contain more than one...

. XMM-Newton Science Analysis System . dal (dal-1.182.1) [xmmsas_20080701_1801-8.0.0] . Meta Index / Home Page . It should be noted that when creating either an array or a column in c++ the dimensions are transferred to FITS in the reverse order. For example, if an array with dimensions (2,4) is created in c++ it will appear in a FITS file as a (4,2) array. XMM-Newton SOC/SSC -- 2008-07-01

... Information about a variety of different calendars for different cultures (e.g., Christian, Jewish, Muslim, Chinese, Hindu etc.) ... In addition, the Chinese had two different ways of interpreting and observing celestial events. One way the Chinese used astronomy was known as lifa; it was a discipline that aimed to understand the regularities and the predictable events in the celestial system through careful, observations, measurements and records. ... back to Teachers' Newsletter Main Page ...

... теория гравитационного поля и фигуры земли (В.В.Бровар, Н.П.Грушинский, Н.А.Чуйкова, Л.А.Савров), . ... Экспериментальная часть вместе с влившейся группой сотрудников физического факультета была объединена в Отдел Гравитационных Измерений (далее ОГИ). ... Заведующим новым отделом стал д.ф.м.н. В.Н.Руденко , перешедший в ГАИШ с Физического факультета, ранее работавший по проблеме детектирования гравитационного излучения под руководством создателей этого направления Я.Б.Зельдовича и В.Б.Брагинского. ...