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SensorServer Records Eclipse

Sun, 2012-05-20 22:29 — WardCunningham

I've recorded today's solar eclipse with a CdS photocell tapped to my shop window. The voltage divider feeding Teensy's ADC favors dim light so I'm actually surprised to have seen the event. Clouds have got to be pretty dark to show up. The eclipse was darker.

SensorServer Sees EclipseSensorServer Sees Eclipse

The data shows totality at 6:15 pm. I sample at five minute intervals.

Kudos to Don Park who suggested I take a look at this. I'm wishing I'd tuned the sensor up to get more and better data. When's the next eclipse?

Comments

Sun, 2012-05-20 23:43 — Laen

Very cool!

It's amazing to me how even when the sun is 3/4th covered, it really didn't make an impact on the apparent brightness of the day.

I think this is the next one of note: https://en.wikipedia.org/wiki/Solar_eclipse_of_August_21,_2017 <-- Totality over Portland!

Wed, 2012-05-23 07:30 — WardCunningham

Raw Data

Unix geeks will notice the epoch timestamp in the fine print of the pop-up in my picture. For the uber-geeks I offer raw data around this event in my native recording format:

        1337553002	98.930
        1337553301	98.989
        1337553601	98.820
        1337553901	98.817
        1337554201	98.729
        1337554502	98.677
        1337554802	98.872
        1337555102	98.952
        1337555401	98.875
        1337555701	98.902
        1337556001	98.922
        1337556301	98.543
        1337556602	98.317
        1337556901	98.544
        1337557201	98.631
        1337557501	98.548
        1337557801	98.366
        1337558102	98.261
        1337558401	97.849
        1337558701	98.293
        1337559002	98.442
        1337559301	98.453
        1337559602	98.435
        1337559901	98.326
        1337560201	98.241
        1337560501	98.181
        1337560801	98.074
        1337561102	97.692
        1337561402	97.227
        1337561701	96.959
        1337562001	96.016
        1337562302	94.642
        1337562601	92.881
        1337562902	91.144
        1337563202	90.891
        1337563501	92.574
        1337563802	93.277
        1337564102	93.661
        1337564401	94.052
        1337564701	95.107
        1337565002	95.317
        1337565302	95.317
        1337565602	95.428
        1337565901	95.968
        1337566201	96.223
        1337566502	96.208
        1337566802	96.139
        1337567102	95.941
        1337567401	95.253
        1337567702	95.117
        1337568001	94.319
        1337568301	93.356
        1337568601	92.010
        1337568901	91.460
        1337569201	90.738
        1337569501	89.880
        1337569802	87.989
        1337570101	84.587
        1337570401	80.544
Mon, 2012-06-04 00:38 — ArKeys

A slight dip?

I would like to see the data for next Tuesday (6/5/12) a half hour on each side of 3pm local (Epoch: 1338933600) for the transit of Venus.