Most of the VSOP data files at the Array Operations Center (AOC) in Socorro are for internal use, rather than being served for other mission elements. The files to be used in preparation for observing by the VLBA and VLA telescopes, and the calibration files generated by these telescopes, use the same computer, directory structure, and naming convention as for ground VLBI experiments, and appear in password-protected accounts. This greatly simplifies operations at the AOC. Files that are specific to the VSOP mission are archived on aspen5 and can be accessed via the same password protected vlbiobs account as used for ground telescope observing files. Since the AOC is not responsible for serving most files to other mission elements, it is not guaranteed that the collections of files such as SRT schedule files will be complete or will contain the latest file version.
Most subdirectories are broken down according to month and year (``mmmyy'') as is the standard practice at the AOC. Files containing data for multiple months will be placed in the subdirectory corresponding to the first data in the file.
From 1 April 1998 the VLBA FTP directory structure changed from the former structure /home/aspen2/vlbiobs/mmmyy to /home/aspen6/astronomy/mmmyy/pppppp, where `mmmyy' is a code for the month and year (UTC) of the beginning of the project and `pppppp' is the project code. This change has been been retrospectively to files from the beginning of January 1998: files before this time are in the old directory structure.
| Dir/Sub | Sub/ | Sub/ | File | Name |
| /magnolia2/vlbacorr/ | vlbaclocks/ | mmmyy/ | Clock (GPS) Files | gps.XX |
| Until 31Dec1997 | ||||
| /aspen2/vlbiobs/ | mmmyy/ | VLBA & VLA Schedule Input | OBS.key | |
| VLBA & VLA Card Files | OBScrd.XX | |||
| VLBA & VLA Sched Files | OBSsched.XX | |||
| VLBA Summary File | OBS.sum | |||
| VLBA Calibration File | OBScal.vlba.Z | |||
| VLA Calibration File | OBScal.y.Z | |||
| From 1Jan1998 | ||||
| /aspen6/vlbiobs/ | astronomy/ | mmmyy/pppppp/ | VLBA & VLA Schedule Input | OBS.key |
| VLBA & VLA Card Files | OBScrd.XX | |||
| VLBA & VLA Sched Files | OBSsched.XX | |||
| VLBA Summary File | OBS.sum | |||
| VLBA Calibration File | OBScal.vlba.Z | |||
| VLA Calibration File | OBScal.y.Z | |||
| mmmyy/pppppp/jobs | correlator job scripts | |||
| mmmyy/pppppp/sniffer | quality control results |
| Dir/Sub | Sub/ | File | Name |
| /home/aspen5/pub/vsog/yymmm/ | srtsch/ | SRT Schedule File | YYMMDD.srs |
| Observation Summary File | YYMMDD.osf | ||
| srtlog/ | SRT log from VSOG | OBSlog.vs | |
| SRT log from Tracking Station | OBSlog.klX | ||
| srttcf/ | Time Correction File | YYMMDDHHMM.kcX | |
| DSN Performance Summary | summary | ||
| Time Component File | YYMMDDHHMM.tcX | ||
| grtlog/ | GRT Log File | OBSlog.XX | |
| grtcal/ | GRT Calibration File | OBScal.XX | |
| odrec/ | Reconstructed Orbits | YYMMDD-YYMMDD-rs.bsp | |
| odpre/ | Predicted Orbits | YYMMDD-YYMMDD-p.bsp | |
| odtsv/ | Tracking Station View Periods | YYMMDD-YYMMDD-vp.ps |