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: http://www.sao.ru/cats/doc/GB6.html
Дата изменения: Wed Mar 18 12:25:11 2015 Дата индексирования: Sun Apr 10 00:06:07 2016 Кодировка: Поисковые слова: universe |
0.........1.........2.........3.........4.........5.........6.........7........ 1234567890123456789012345678901234567890123456789012345678901234567890123456789 000004.7 0.7 +183324 11 -42.5 107.2 64 7 1.06 0.94 79 0 937 388 Bytes (01--02).--- Hours of right ascension, format I2 Bytes (03--04).--- Minutes of right ascension, format I2 Bytes (05--08).--- Seconds of right ascension, format F4.1 Bytes (09--12).--- RMS uncertainty in right ascension (s), format F4.1 Byte (14). --- Sign of declination, format A1 Bytes (15--16).--- Degrees of declination, format I2 Bytes (17--18).--- Arcminutes of declination, format I2 Bytes (19--20).--- Arcseconds of declination, format I2 Bytes (22--23).--- RMS uncertainty in declination (arcsec), format I2 Bytes (25--29).--- Galactic latitude (deg), format F5.1 Bytes (31--35).--- Galactic longitude (deg), format F5.1 Bytes (37--41).--- 4.85 GHz peak flux density (mJy), format I5 Bytes (43--46).--- RMS uncertainty in peak flux density (mJy), format I4 48 --- Bflag [B] for sources near the border (1) Byte (49). --- Flag "E" for significant extension, format A1 Byte (50). --- Flag "W" for warning, format A1 Byte (51). --- Flag "C" for confusion, format A1 Bytes (53--56).--- Normalized FWHM major axis, format F4.2 Bytes (58--61).--- Normalized FWHM minor axis, format F4.2 Bytes (63--65).--- Fitted major-axis position angle (deg east of north), format I3 Bytes (67--69).--- Local sky level (mJy), format I3 Bytes (71--74).--- Map pixel column number counted from left, format I4 Bytes (76--79).--- Map pixel row number counted from bottom, format I4
The digital catalogs may be copied by FTP as follows: ftp nvss.cv.nrao.edu login: anonymous password: (type your full email address here) cd pub/gb6 (to access the GB6 public directory) ls (to list the directory contents) get README (to get a printed copy of this file) binary (to copy binary files) get B1950.gz (to get the B1950 catalog in compressed form) get J2000 (to get the J2000 catalog in uncompressed form) quitCompression: The catalogs are stored as text files compressed in GNU zip (gzip) format, the .gz at the end of the name denoting this compression. If you want an uncompressed version, simply omit the ".gz" when requesting the file from ftp. Gzipped files can be uncompressed by "gunzip" which is available for most computer systems. For more details see file pub/nvss/compress.txt. The uncompressed catalog is 6 Mbytes in size; the compressed version is only 2 Mbytes.