launch

The launch of NINA took place on the 10th of July 1998 from the Baikonur launch facility (Russia), by means of a Zenith launcher. The transmission of its scientific data started on August 31st, after an initial period needed for stabilization of the orbit and overall checks of the satellite functionality.

Figure 1 Figure 2 Figure 3

In Figure 1 is presented the Zenith some hours before the launch, Figure 2 shows the positioning of the D1 box outside the main body of Resurs, while in Figure 3 the phase of mounting the Resurs spacecraft in to the Zenith is visible.

Figure 4
   
The orbit of Resurs can be followed in Figure 4.

Important information about the status of the detector are provided by the ratemeters, which are indicators of the particle flux impinging on different planes of box D1. Low and high flux ratemeters are implemented at different heights inside the telescope. In case of intense flux, the high ratemeters section provides information while the low ratemeters may saturate.
Figure 5 shows the behavior of the low ratemeter implemented on plane n.6 during one typical orbit. The counting rate is given in hertz, with the saturation value at about 420 Hz. From the picture one can easily follow the path of the satellite through the different regions of the Earth's magnetosphere.
Figure 5In particular, it can be seen how the flux increases at the Poles with respect to the Equator, because at high latitudes the terrestrial magnetic field does not effectively prevent low energy particles from approaching the Earth. The spikes visible near the Poles are due to low energy electrons which fill the Outer Radiation Belt. In the South Atlantic Anomaly the magnetic field has a local minimum and thus the low energy proton flux reaches very high levels. This is clearly evident by the saturation of the ratemeter counter.