This event is very long, at 17.5 sec. It's faint, but long integrations should get it. I hope 8x will be sufficient. Because it lasts so long, it may be a good one to search for moonlets
Alt=30, Az=193 in Ophiuchus 10 degrees above/left of Antares
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While the path let one observe from anywhere in SC area, I'd hoped to be able to stay home. But fog threatened, I got in the car and headed up to get clear at Twin Gates. But by the time I got to UCSC I could see that direction already had fog coming over the ridge. I reversed, believing the fog may take longer to curl around and hit the north direction, and so ended up at Ocean St Extention at the entrance to the Santa Cruz Cemetery. Fog held off long enough to just get the occultation. 3 minutes after the event, fog covered the star field. But I saw a clear long occultation at 16x on the computer screen.
I reduced it using dynamic masks, 2.4px default circular. Median filtering in X and Y. The sky brightness was high, and fog forming, covering completely the object a few minutes after the event. Ref1 had saturated pixels, even though it was a pretty faint looking star. Ref2 is safer. The target did not have saturated pixels.
long 122 01 41.46, lat=36 59 25.44 elev 21m
magDrop report: percentDrop: 59.1 magDrop: 0.972 +/- 0.142 (0.95 ci)
DNR: 3.15
D time: [04:38:59.9670]
D: 0.6800 containment intervals: {+/- 0.1312} seconds
D: 0.9500 containment intervals: {+/- 0.3909} seconds
D: 0.9973 containment intervals: {+/- 1.2735} seconds
R time: [04:39:19.8069]
R: 0.6800 containment intervals: {+/- 0.1312} seconds
R: 0.9500 containment intervals: {+/- 0.3909} seconds
R: 0.9973 containment intervals: {+/- 1.2735} seconds
Duration (R - D): 19.8399 seconds
Duration: 0.6800 containment intervals: {+/- 0.2124} seconds
Duration: 0.9500 containment intervals: {+/- 0.5987} seconds
Duration: 0.9973 containment intervals: {+/- 1.5494} seconds
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Observed from Scotts Valley water district after the SCAC Meeting, successfully.I got a 20.5s event for Sigelinde, 16x at the Scotts Valley Water District building, after the astronomy club meeting. There's some spikes during the event, but the background no-star level was noisy.
magDrop report: percentDrop: 59.1 magDrop: 0.970 +/- 0.117 (0.95 ci)
DNR: 2.62
D time: [04:38:59.5804]
D: 0.6800 containment intervals: {+/- 0.1177} seconds
D: 0.9500 containment intervals: {+/- 0.3626} seconds
D: 0.9973 containment intervals: {+/- 0.9826} seconds
R time: [04:39:20.1340]
R: 0.6800 containment intervals: {+/- 0.1177} seconds
R: 0.9500 containment intervals: {+/- 0.3626} seconds
R: 0.9973 containment intervals: {+/- 0.9826} seconds
Duration (R - D): 20.5536 seconds
Duration: 0.6800 containment intervals: {+/- 0.1916} seconds
Duration: 0.9500 containment intervals: {+/- 0.5385} seconds
Duration: 0.9973 containment intervals: {+/- 1.1967} seconds
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