This is a pretty tough event, almost too tough to consider. But it should last up to about 2 seconds and that's long enough to get a few points inside the occultation if the sky brightness is acceptable. That's an issue - the target is only 22 degrees from the cresent moon, and the sun is -15. I will give it a try from home. Maybe Karl and Kirk will give it a try too, as our chords are near the edge and would be good to help the orbit. The rank is high, and the RUWE is 0.85 which is good. The drop is 1.1 magnitudes, and the V combined is given as 13.1, which is about 1 magnitude brighter than you get by adding the 15.2 asteroid V mag and the W=14.7 mag of the target star, so it's not so clear how bright it will be
Alt=29, Az=199 in Sagittarius, and 58 Oph is inside the eyepiece view, V=4.9 star. Target is about 60% of the way from Nunki to the left foot of Ophiuchus.
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Kirk, Karl, and I all got recordings
I had to set up on Grove Ln across from SC High School to get a clear direction. I decided to go with 32x, at which the target star was consistently visible, with brightness and contrast turned way down to optimize contrast with the sky. It looked like the target disappeared from view for 1 integration (about 0.6s?) at the proper predicted time, but will have to reduce to see better. The predicted drop of 1 magnitude was more what I saw. 0.80 mag drop, and the interval was 3.2 seconds,
I used dynamic masks, 32x, Asked for drops 3 to 7 points in duration, as that's what the drop at the proper time indicated.
NIE Test: 4.1 sigma
magDrop report: percentDrop: 52.2 magDrop: 0.801 +/- 0.243 (0.95 ci)
DNR: 1.97
D time: [03:24:20.6844]
D: 0.6800 containment intervals: {+/- 0.2631} seconds
D: 0.9500 containment intervals: {+/- 0.8585} seconds
D: 0.9973 containment intervals: {+/- 2.0988} seconds
R time: [03:24:23.8844]
R: 0.6800 containment intervals: {+/- 0.2631} seconds
R: 0.9500 containment intervals: {+/- 0.8585} seconds
R: 0.9973 containment intervals: {+/- 2.0988} seconds
Duration (R - D): 3.2000 seconds
Duration: 0.6800 containment intervals: {+/- 0.4080} seconds
Duration: 0.9500 containment intervals: {+/- 1.0820} seconds
Duration: 0.9973 containment intervals: {+/- 2.2843} seconds
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Recorded from home at 32x. I got a 2.6693s event for Pamina, 32x from home on Sep. 16. Duration is less than max predicted but I was close to the northern limit. Resolution is coarse at 32x and error bars are wide but there is an apparent dip at the predicted time of a few integrations. I tried a nest of apertures in PyMovie and mask size 3.2 gave the best NIE sigma.
NIE sigma distance = 2.2
magDrop report: percentDrop: 45.2 magDrop: 0.653 +/- 0.301 (0.95 ci)
DNR: 1.96
D time: [03:24:20.4469]
D: 0.6800 containment intervals: {+/- 0.2988} seconds
D: 0.9500 containment intervals: {+/- 1.1577} seconds
D: 0.9973 containment intervals: {+/- 2.6383} seconds
R time: [03:24:23.1162]
R: 0.6800 containment intervals: {+/- 0.2988} seconds
R: 0.9500 containment intervals: {+/- 1.1577} seconds
R: 0.9973 containment intervals: {+/- 2.6383} seconds
Duration (R - D): 2.6693 seconds
Duration: 0.6800 containment intervals: {+/- 0.4916} seconds
Duration: 0.9500 containment intervals: {+/- 1.3899} seconds
Duration: 0.9973 containment intervals: {+/- 2.9790} seconds
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Recorded at 16x in clear skies. Looked like a miss but not sure.