| Zaćmienie Słońca 20.03.2015 Pomiary szumu Słońca |
| Pomiary F1EHN: These compilations of measurements will be very interesting. My previous eclipse I did measurement on 3 cm in 1996. The signal dropped in a near ratio as the optical eclipse. Today I did the measurement @1.4 GHz (outside H1 line) and I noted the signal dropped less than the optical eclipse (around 4 dB (~40%) for 78% in optic – near PARIS). Moreover the radio eclipse started before the optical eclipse and finished later than the forecast. The sun seemed to be bigger at this frequency (probably coming from its hot chromosphere – I am not an expert and I have to find more info). It is the 1 st time I used my 21cm station for a sun eclipse. I will send you ASAP the data of the complete eclipse. 73! JJ F1EHN Web page:OK VHF Club |