This is a wide path event that includes all of Santa Cruz and the southern Santa Cruz Mtns. Karl, Kirk and I are all well within the path. The duration is a generous 3.1s, the altitude is a nice alt=45 degrees, Az=125. The problem is that the star is only 14 degrees from the 97% waning moon, making for a bright sky that will limit the ability to integrate. It may still be doable, and is a no-sleep-loss time so I will give it a try from home. The other problem, is that the dip in brightness is only 0.8 mag in the R band
Alt=42, Az=125 just left of the "tripod" of Aquarius
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I got a recording from my carport at 8x setting. Skies were warm, dry, and no clouds. The sky was bright at 8x, but not bright enough to fail to see the star fairly steadily on the monitor. It looked like a ~2s occultation on the monitor, but hard to say more till I reduce it.
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magDrop report: percentDrop: 32.3 magDrop: 0.424 +/- 0.179 (0.95 ci)
DNR: 1.17
D time: [06:42:05.6406]
D: 0.6800 containment intervals: {+/- 0.3218} seconds
D: 0.9500 containment intervals: {+/- 1.1821} seconds
D: 0.9973 containment intervals: {+/- 3.0126} seconds
R time: [06:42:09.1606]
R: 0.6800 containment intervals: {+/- 0.3218} seconds
R: 0.9500 containment intervals: {+/- 1.1821} seconds
R: 0.9973 containment intervals: {+/- 3.0126} seconds
Duration (R - D): 3.5200 seconds
Duration: 0.6800 containment intervals: {+/- 0.5653} seconds
Duration: 0.9500 containment intervals: {+/- 1.6524} seconds
Duration: 0.9973 containment intervals: {+/- 3.5960} seconds
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Jerry Bardecker pointed out, as auditor of this event, that I probably included too much of the light curve which had been affected by aerosol or cloud obscuration. At his suggestion, and now with the most recent versions of PyMovie/PyOTE, and with a better appreciation of how a tight mask works best, I've re-done this analysis. I used a 3.2px static circular mask, trimmed out the wings of the light curve which had bad spikes in reference stars and target, and also I was more openminded about where the shallow event D and R would be, by asking for the best solution between 3 and 30 integration points. PyOTE found 8x was the integration setting. This new solution is in much better agreement with Kirk Bender's much cleaner light curves and solution which was on virtually the same track, and shorter in duration and more consistent with a roundish asteroid.
magDrop report: percentDrop: 40.3 magDrop: 0.561 +/- 0.199 (0.95 ci)
DNR: 1.37
D time: [06:42:06.2806]
D: 0.6800 containment intervals: {+/- 0.2041} seconds
D: 0.9500 containment intervals: {+/- 0.7615} seconds
D: 0.9973 containment intervals: {+/- 1.7482} seconds
R time: [06:42:09.1606]
R: 0.6800 containment intervals: {+/- 0.2041} seconds
R: 0.9500 containment intervals: {+/- 0.7615} seconds
R: 0.9973 containment intervals: {+/- 1.7482} seconds
Duration (R - D): 2.8800 seconds
Duration: 0.6800 containment intervals: {+/- 0.3256} seconds
Duration: 0.9500 containment intervals: {+/- 0.9682} seconds
Duration: 0.9973 containment intervals: {+/- 2.1709} seconds
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Jerry B re-submitted for me, 1/31/25 and his updated IOTA report of mine was saved to my usual spot, deleting the old one.
Recorded from home at 8x, got a successful recording. (RN: looks like there were cleaner skies at Kirk's. His light curves trend is level. Mine show dips and doodles from wisps of gunk, presumably. So, his timings have better accuracy as well)
I got a 2.9362 sec event for Mussorgskia from home at 8x, not much contrast because of the moonlight, noisy but easily passed false positive.
magDrop report: percentDrop: 37.5 magDrop: 0.511 +/- 0.153 (0.95 ci)
DNR: 1.60
D time: [06:42:06.3260]
D: 0.6800 containment intervals: {+/- 0.1272} seconds
D: 0.9500 containment intervals: {+/- 0.4895} seconds
D: 0.9973 containment intervals: {+/- 1.2473} seconds
R time: [06:42:09.2622]
R: 0.6800 containment intervals: {+/- 0.1272} seconds
R: 0.9500 containment intervals: {+/- 0.4895} seconds
R: 0.9973 containment intervals: {+/- 1.2473} seconds
Duration (R - D): 2.9362 seconds
Duration: 0.6800 containment intervals: {+/- 0.2303} seconds
Duration: 0.9500 containment intervals: {+/- 0.6795} seconds
Duration: 0.9973 containment intervals: {+/- 1.4541} seconds
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