This was a decent event through Santa Cruz. I had a very long and busy night with my Astro 9ABC students, who were making use of the last moonless night (and maybe last clear night?) before the big moon ruined things and rain forecast early next week. Bernard H, in particular, is a real hard working powerhouse for astrophotography and has a ton of gear he brings and sets up. I did not get everything packed up, buttoned up and out until 12:40am. Didn't get home till after 1am, and did not have time to try this occultation. It was just Kirk's
For 2000 YE101 last Wednesday, I got a 0.6s event from home at 8x. At first I did a static aperture mask of size 3 in pymovie. The curve was noisy and after smoothing on a tracking star failed the NIE test 3 sigma in pyote, even though there was an obvious dip near the predicted time, deeper than any other point on the curve. Then I did pymovie again with a 12 stack of apertures, found size 2.4 looked better, but it still failed NIE. Then I tried appsum instead of signal, the curve was cleaner and passed 4 sigma but failed 5 sigma, it was the best I could do. The predicted magdrop was 2.5, but I got a drop of 0.214 with appsum. When I used signal, I got a magdrop of 2.
magDrop report: percentDrop: 17.9 magDrop: 0.214 +/- 0.045 (0.95 ci)
DNR: 2.97
D time: [07:13:25.4367]
D: 0.6800 containment intervals: {+/- 0.0424} seconds
D: 0.9500 containment intervals: {+/- 0.1119} seconds
D: 0.9973 containment intervals: {+/- 0.2549} seconds
R time: [07:13:26.0354]
R: 0.6800 containment intervals: {+/- 0.0424} seconds
R: 0.9500 containment intervals: {+/- 0.1119} seconds
R: 0.9973 containment intervals: {+/- 0.2549} seconds
Duration (R - D): 0.5987 seconds
Duration: 0.6800 containment intervals: {+/- 0.0595} seconds
Duration: 0.9500 containment intervals: {+/- 0.1380} seconds
Duration: 0.9973 containment intervals: {+/- 0.2841} seconds