What is inside a VLBI image distribution file. ---------------------------------------------- The file is compressed with bzip2 ( http://sources.redhat.com/bzip2/ ) and tar ( http://www.gnu.org/software/tar/tar.html ) open source compression utilities. Images and uv data organized in subdirectories. Name of the subdirectory is the J2000 name. Each subdirectory contains all files related to this specific source File name: NAME/NAME_B_DATE_TYP.EXT ^ ^ ^ ^ ^ | | | | |----- Extension. One of "ps", "gif" or "fits". | | | |--------- Data type. One of "map", "rad", "uv". | | |-------------- Date of the experiment in YYYY_MM_DD format. | |----------------- Band. One "X" or "S". |------------------------- J2000 name. Extension specifies physical organization of data/ Data type specifies data contents. "map" stands for source brightness distribution. "rad" stands for dependency of the correlated flux density as a function of the length of the baseline projection to the source plane; "uv" stands for calibrated measured complex fringe amplitudes. Date is is the calendar date of the observing session. Example 2004_05_08 . Band stands for X -- 8.4-8.9 GHz frequency range and S -- 2.2-2.3 GHz frequency range. J2000 name is a 10 letters long IAU name. Examples: 1) J1438-2204/J1438-2204_S_2004_05_08_uv.fits Source: J1438-2204 Band: S ( 2.2-2.3 GHz ) Date: 2004_05_08 ( May 08, 2004 A.C. ) Data contents: calibrated uv data in fits format 2) J1438-2204/J1438-2204_X_2004_05_27_map.ps Source: J1438-2204 Band: X ( 8.4-8.9 GHz ) Date: 2004_05_27 ( May 27, 2004 A.C. ) Data contents: naturally weighted CLEAN images in postscript format. 3) J1438-2204/J1438-2204_X_2004_05_08_map.gif Source: J1438-2204 Band: X ( 8.4-8.9 GHz ) Date: 2004_05_08 ( May 08, 2004 A.C. ) Data contents: naturally weighted CLEAN images in gif format 4) J1438-2204/J1438-2204_X_2004_04_30_map.fits Source: J1438-2204 Band: X ( 8.4-8.9 GHz ) Date: 2004_04_30 ( Apr 30, 2004 A.C. ) Data contents: naturally weighted CLEAN images in fits format 5) J1438-2204/J1438-2204_S_2004_05_08_rad.ps Source: J1438-2204 Band: S ( 2.2-2.3 GHz ) Date: 2004_05_08 ( May 08, 2004 A.C. ) Data contents: plots of the correlated flux density as a function of the length of the baseline projection to the source plane in postscript format.