Mostramos la implementación de un instrumento de medición de la calidad de cielo (seeing) basado en la técnica del Monitoreo del Movimiento Diferencial de Imagen (DIMM). Este instrumento permite la medición precisa y sistemática del seeing, así como su evolución temporal. Fue monitoreado el seeing en el Observatorio de Huancayo durante siete noches consecutivas de Agosto de 2012. El seeing promedio fue de 1.34” ± 0.33”.En 14% del tiempo observado el seeing estuvo por debajo de 1”, y en 71% del tiempo, por debajo de 1.5”. El dominio de la técnica y su aplicabilidad nos permitirá usar el instrumento en varios lugares donde campañas de medición de seeing sean programadas dentro del Perú. La selección de una facilidad astronómica óptica profesional (observatorio astronómico), será favorecida con medidas DIMM futuras.

Outline: • Space Weather and Equatorial Aeronomy • Clustered Instruments ▫ Incoherent and Coherent Scatter Radars ▫ LISN ▫ Magnetometers ▫ Optical Instruments ▫ Solar and Astronomical Instruments • Equatorial and Low latitude Ionospheric Effects due to Planetary Wave Atmospheric forcing.

Three rare occasions are introduced, where the excitation of vertical acoustic resonance between the ground and the ionosphere, and the resultant generation of a field-aligned current, just after earthquakes are observationally confirmed. In the case of two inland earthquakes, barometric observations very close to the epicenters (i.e., only 30 km apart) were available, and they showed a sharp spectral peak which appeared within one hour after the origin time and lasted a few hours. The observed periods of the spectral peaks around 260 seconds are close to the period of the theoretically-expected fundamental mode of the resonance. On the other hand, magnetic observations on the ground showed a dominant period at 220–230 seconds which corresponds to the first overtone among theoretically-expected major resonance peaks. In the third case, i.e., during the 2010 Chile earthquake, a long-per...