This bright occultation on a Friday evening will be quite easy to get good data. But, it's got a poor rank and also a higher than you'd want RUWE=1.55. Don't be surprised if you get a miss. The path cuts right through the center of Santa Cruz and the centerline is right over Karl. All of the team should be in play for this one.. Drying air is predicted so our odds of getting the event are good. However, it may be windy.
Alt=36, Az=56 in the Northeastern sky in Andromeda
Sun=-14 and will not be a problem.
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Clear skies and good conditions for this one.
I observed from next to the mailboxes on Rincon. Used Altair and Alpheratz to 2-star align; went straight to the target no problem. Did a BPC correction on the Watec before data taking. I set the GAIN=27 to guard against saturated pixels. I'm pretty sure it was a miss, unless it might have been a single point drop to zero. Anything longer I think I'd have seen.
I reduced in PyMovie in field mode. I used dynamics masks. I used only the one tracking star as it was the only other visible star. The sky was quite black. Even at 1x and using gain=27 on the Watec, the target star was still showing saturated pixels, visible during the PyMovie reductions.
My data shows an event just 0.6s after the (rounded off) predicted event time of 2:54:12 UT. Bernard said he had a 0.35s event for this, so I may have gotten a shorter occultation near the edge of the object. My readings did not go to zero, but Bernard also said that he saw a distinct fade in his data, so I suspect a binary star and perhaps I got only one component?
The significance of my NIE test was 9.1 sigma. I had to trim out the first 15% and last 5% of the recording, due to overhead power lines not giving equal fadings to the ref star and target. I decided since the ref star was only half the brightness of the target, I was better off not using it at all. I used no reference star.
magDrop report: percentDrop: 61.4 magDrop: 1.033 +/- 0.217 (0.95 ci)
DNR: 3.04
D time: [02:54:12.6018]
D: 0.6800 containment intervals: {+/- 0.0051} seconds
D: 0.9500 containment intervals: {+/- 0.0146} seconds
D: 0.9973 containment intervals: {+/- 0.0321} seconds
R time: [02:54:12.7218]
R: 0.6800 containment intervals: {+/- 0.0051} seconds
R: 0.9500 containment intervals: {+/- 0.0146} seconds
R: 0.9973 containment intervals: {+/- 0.0321} seconds
Duration (R - D): 0.1200 seconds
Duration: 0.6800 containment intervals: {+/- 0.0078} seconds
Duration: 0.9500 containment intervals: {+/- 0.0183} seconds
Duration: 0.9973 containment intervals: {+/- 0.0363} seconds
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Wrong coordinates used, ran out of time trying to correct for it and find the right field. No data.
Had a miss, from home.
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Got a positive event from his place in Carbonera, just 2 miles north of me. Got a positive for this one. 0.375 seconds long. I got a gradual fade in over 50ms. I got recordings from 3 different telescopes, in the same spot however. The gradual fade is in all telescope results. Very interesting. all from Carbonera
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