This is a long 6.8 s event, so although the target is faint, we should have a good chance at maping the shape well, and even seeing a moonlet if one exists. Alt=53, Az=80
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Kirk observed from home, successfully, but could not judge any fading. I got a recording, clear ~4-5 s long significant dimming as predicted. Visual on monitor. Not reduced
I set up at the Twin Gates mtn bike crossing, on the east side. Perfect clear clean skies, but a bit of a breeze did blur the stars from time to time but not during the occultation. I may have to use dynamic mask for PyMovie. I saw a clear ~4-5s event at 16x from my external monitor.
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At sunset, the moon passed through the heart of the Plieades star cluster. Now, 2 hrs later, the cluster was emerging from the moon's glare |
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We had a few strong gusts of wind which I tried to protec the scope from, using the jacket I was wearing spread like BatMan, carefully. |
The middle drop is the occultation, the others are short or long wind gusts |
The best calibration was fairly short smoothing. |
The occultation was only about a 50% drop in total brightness |
The PyOTE version I used took forever to find the event solution. Don't know why. I used D and R intervals. 25 possible solutions shouldn't have taken long. |
Passes False Positive test easily. |
magDrop report: percentDrop: 50.2 magDrop: 0.758 +/- 0.129 (0.95 ci)
DNR: 2.61
D time: [03:53:53.9115]
D: 0.6800 containment intervals: {+/- 0.1136} seconds
D: 0.9500 containment intervals: {+/- 0.3518} seconds
D: 0.9973 containment intervals: {+/- 0.8318} seconds
R time: [03:53:59.0314]
R: 0.6800 containment intervals: {+/- 0.1136} seconds
R: 0.9500 containment intervals: {+/- 0.3518} seconds
R: 0.9973 containment intervals: {+/- 0.8318} seconds
Duration (R - D): 5.1199 seconds
Duration: 0.6800 containment intervals: {+/- 0.1794} seconds
Duration: 0.9500 containment intervals: {+/- 0.4385} seconds
Duration: 0.9973 containment intervals: {+/- 0.9483} seconds
Got a recording at 16x. Did look like it dimmed. I got a 4.2 sec event for Luthera, 16x from home.
magDrop report: percentDrop: 42.5 magDrop: 0.600 +/- 0.159 (0.95 ci)
DNR: 2.06
D time: [03:53:53.9026]
D: 0.6800 containment intervals: {+/- 0.1546} seconds
D: 0.9500 containment intervals: {+/- 0.5242} seconds
D: 0.9973 containment intervals: {+/- 1.3796} seconds
R time: [03:53:58.1735]
R: 0.6800 containment intervals: {+/- 0.1546} seconds
R: 0.9500 containment intervals: {+/- 0.5242} seconds
R: 0.9973 containment intervals: {+/- 1.3796} seconds
Duration (R - D): 4.2709 seconds
Duration: 0.6800 containment intervals: {+/- 0.2619} seconds
Duration: 0.9500 containment intervals: {+/- 0.7582} seconds
Duration: 0.9973 containment intervals: {+/- 1.6224} seconds
Got a recording at 8x. Hard to tell what happened, too faint. Invisible on playback. No data
