Journal notes, More quiet, more thoughts on power supplies
GELLER Labs "Backyard Science"
Thoughts on a proton precession magnetometer design - a Proton Magnetometer Project. Build an Earth's field magnetometer.
The FDM MAGNETOMETER1 project is a low cost high performance proton magnetometer (a digital magnetometer) kit under development for universities and amateur scientists to be able to accurately measure and monitor changes in the Earth's total magnetic F field and to observe geomagnetic storms. Magnetic storms can cause large excursions in the field and are of concern to interests ranging from electrical power grids, radio communications, and satellite operations, to aurora watchers and amateur radio operators.
1 Filter Diagonalization Method "FDM" (harmonic inversion), see Jan 21 and Jan 23 entries, based on: Vladimir A. Mandelshtam, Howard S. Taylor, Harmonic inversion of time signals and its applications, Journal of Chemical Physics (1997), Volume 107, Issue 17, 1997, Pages 6756-6769
(be sure to hit refresh to pick up our latest changes and entries)
Project Documentation (very early stages)
Journal Notes:
Monday, September 27, 2010
Overnight: PDF, TXT. Quiet. Interesting fast transient just after 4 pm (2000 hours UTC) this afternoon PDF, USGS PDF.
Tuesday, September 28, 2010
Overnight: PDF, TXT. Two very tiny disturbances early followed by an interesting negative slow "pulse" (sub-storm levels). Our overnight expanded scale PDF, NRCan OTT expanded scale (compare to total "Bf" field) PDF, USGS PDF.
Wednesday, September 29, 2010
Overnight: PDF, TXT. More on power supplies.
Thursday, September 30 , 2010
Overnight: PDF, TXT. Very quiet overnight.
Friday, October 1 , 2010
Overnight: PDF, TXT. Continued quiet. sample spectra PDF, log spectra PDF.
Saturday, October 2 , 2010
Overnight: PDF, TXT. Quiet (with a few very minor vehicle offsets).
We will be making the next prototype run of the NBLNA (analog) board and the SWCTL (zero-current switching hybrid FET-Relay) board soon. Comments are welcomed! A gain trim was added to the NBLNA board Ver. 0.9.2, see project docs.
Project Documentation (very early stages)
QUESTIONS/COMMENTS/notice of typos, etc. send email to joegeller at gellerlabs dot com
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