This event is difficult; only 19 degrees up, in Serpens, and lasting only 0.6s maximum. We'd ordinarily not try an event like this except maybe from home. Certainly not a 50 mile drive to the path. But, the real event was Ulrike, and the FPO StarBQ and meet up's. This event was only 40 minutes after Ulrike from the same sites suitable for both, which had very similar shadow paths.
Alt=19, Az=231 in Serpens.
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All 3 of Kirk, Bernard, and I got recordings under very good dark conditions. But low altitude caused lots of scintillation and required 8x bare minimum and 16x more reliably to see the target star
I observed from 200 ft south of a faint crossing on Hwy 25. At coordinates
Long= 121 14 08.94
Lat= 36 38 46.07
Elev 250m
I observed at 8x, Gain=41, Gamma=1.0, using the Startech cable. I used a 2.4px mask, fixed circular. When using the full dataset, PyOTE could not identify the event, however there is a clear 3 consecutive integrations at zero, at the predicted event time. These are the only 3 or 2 consecutive points at zero. Kirk Bender slightly north of me, also found a positive. I got no event detected when specifying the D and R intervals, nor when specifying a min=3, max=11 point event. There were some other points at zero which were earlier than 20s before the event, and also more than 30s after the event. When the light curve was trimmed to exclude these, then PyOTE detected an event of duration 0.48s, consistent with Kirk Bender's event, with NIE significance of 2.9 sigma.
magDrop report: percentDrop: 100.0 (magDrop cannot be calculated because A is negative)
DNR: 1.96
D time: [04:04:45.1784]
D: 0.6800 containment intervals: {+/- 0.0540} seconds
D: 0.9500 containment intervals: {+/- 0.1660} seconds
D: 0.9973 containment intervals: {+/- 0.4030} seconds
R time: [04:04:45.6584]
R: 0.6800 containment intervals: {+/- 0.0540} seconds
R: 0.9500 containment intervals: {+/- 0.1660} seconds
R: 0.9973 containment intervals: {+/- 0.4030} seconds
Duration (R - D): 0.4800 seconds
Duration: 0.6800 containment intervals: {+/- 0.0809} seconds
Duration: 0.9500 containment intervals: {+/- 0.2026} seconds
Duration: 0.9973 containment intervals: {+/- 0.4002} seconds
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PyOTE found me an event for Ilmari, Oct 11 on Hwy 25, at 16x, near predicted time, and near predicted duration, but the NIE sigma distance is only 0.9. I got the best results with a size 2.0 static mask in PyMovie, other sizes either got an event 42 sec earlier than predicted, or it could not find any event. So it will be interesting if either of you got something to confirm.
magDrop report: percentDrop: 65.6 magDrop: 1.160 +/- 0.859 (0.95 ci)
DNR: 2.41
D time: [04:04:45.2640]
D: 0.6800 containment intervals: {+/- 0.0956} seconds
D: 0.9500 containment intervals: {+/- 0.2896} seconds
D: 0.9973 containment intervals: {+/- 0.7098} seconds
R time: [04:04:45.7979]
R: 0.6800 containment intervals: {+/- 0.0956} seconds
R: 0.9500 containment intervals: {+/- 0.2896} seconds
R: 0.9973 containment intervals: {+/- 0.7098} seconds
Duration (R - D): 0.5339 seconds
Duration: 0.6800 containment intervals: {+/- 0.1515} seconds
Duration: 0.9500 containment intervals: {+/- 0.3765} seconds
Duration: 0.9973 containment intervals: {+/- 0.7620} seconds
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