Time-nuts, many of you are routinely recording - or may easily do it - the trace of the control voltage of non-free-running crystal oscillators
(disciplined by atomic resonance or GPS). Once again I'm here asking you to keep an open eye during a solar eclipse, which will occur on January 15. My current opinion is that the eclipse couldn't affect atomic resonances at a measurable level for the state of the art, but could affect massive (as compared to atoms) pieces of vibrating matter. The control voltage trace tells us whether a crystal deviated, even in front of a constant rate of the whole clock. I recall (already mentioned in this list) that previous tests (Max Plank Institute) showed no deviations of atomic resonances, but we don't have info about control voltages, and that S.W.Zhou instead claimed to have observed deviations that indeed I believe were deviations of crystals not promptly steered. During this eclipse a numerous team of researchers will be conducting sophisticated pendulum tests at the Maldives (latitude near to zero, no Foucault effect), and a number of US institutions, located in the anti-eclipse path, will provide gravimeter data. Elsewhere, Russia and Florida at least, torsion balance tests will be conducted. Just to mention what I'm aware of. As far as I know, nobody will provide clock (I would say oscillator) data. Hence I' m asking this list to give a contribution. What I ask is to send me your control voltage data, possibly for the days 14-15-16 January, and from preferred locations -but not only- in the eclipse or anti- eclipse path, even penumbra or anti-penumbra. Googling "fred espenak" you will immediately find the data for the incoming eclipse. Thanks in advance. Antonio I8IOV _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.