| Epoch | float | Epoch of observation. For example, 2007.054 | |
| HourAngle | float | The telescope hour angle (degrees) | |
| Teldec | float | Declination of the telescope pointing (degrees), in the FK5 J2000.0 coordinate system | |
| Telra | float | Right ascension of the telescope pointing (degrees), in the FK5 J2000.0 coordinate system | |
| ZenithDistance | float | The telescope zenith distance (degrees) | |
