Magnetic Observatories (IMOs)
An INTERMAGNET Magnetic Observatory (IMO) is a magnetic observatory, having full absolute control, that provides one minute magnetic field values measured by a vector magnetometer, and an optional scalar magnetometer, all with a resolution of 0.1 nT. Vector measurements performed by a magnetometer must include the best available baseline.
An IMO must try to meet the following minimum requirements:
8000 nT Auroral and Equatorial
6000 nT Mid Latitude
|Band Pass||DC to 0.1 Hz|
|Sampling Rate||1 Hz (1 sec)|
|Thermal Stability||0.25 nT/°C|
|Long Term stability||5 nT/year|
|Sampling Rate||0.033 Hz (30 sec)|
Further details on IMO requirements are described in the INTERMAGNET Technical Reference Manual.
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