This event is very long, at 6.4s max and Kirk and I are near the centerline, and Karl's inside the path too. It's an easy, high rank, long event suitable for good moonlet-hunting and shape characterization by our 3-team. It's also a Monday morning sleep killer at 4:37am.
Alt=64, Az=195 in SSW
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This event was almost slept through - the weather forecast was for 100% cloudy with the best? model; the ECMWF cloud model. But they were wrong. My head (not alarm clock) woke me up at 4:00:00 precisely, and I looked outside to totally cloudless skies. Got set up, and got a nice long positive. Karl also got a recording. Kirk tried the early one at 9:21pm 1999CR108 in clouds, and not the TNO at 1am nor Sinzot. So we have a mixture of results on a mixed weather forecast and weather reality. I observed from just outside my carport.
Richard Nolthenius
I set the Watec at 2x, Gamma=0.7. High altitude made for a decent signal to noise, regardless of the bright moon. I used a radius of 3.2, and am going to make that my default going forward, as Kirk has been finding that his 12-aperture stacks are usually finding the 3px or 2px apertures give the best results, when seeing is typical and focus is careful.
I was tempted to try to use a diffraction model, given the higher than average points at the onset and end of the occultation. But, there is no listed diameter for the target star, so instead I am just using a square model. The high points at the ends are not obvious enough out of the ordinary to justify a diffraction model, too.
magDrop report: percentDrop: 85.3 magDrop: 2.084 +/- 0.242 (0.95 ci)
DNR: 3.84
D time: [11:37:17.1292]
D: 0.6800 containment intervals: {+/- 0.0110} seconds
D: 0.9500 containment intervals: {+/- 0.0277} seconds
D: 0.9973 containment intervals: {+/- 0.0579} seconds
R time: [11:37:22.3292]
R: 0.6800 containment intervals: {+/- 0.0110} seconds
R: 0.9500 containment intervals: {+/- 0.0277} seconds
R: 0.9973 containment intervals: {+/- 0.0579} seconds
Duration (R - D): 5.2000 seconds
Duration: 0.6800 containment intervals: {+/- 0.0166} seconds
Duration: 0.9500 containment intervals: {+/- 0.0383} seconds
Duration: 0.9973 containment intervals: {+/- 0.0770} seconds
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Observed from home, and is attempting his own reductions.