The Occultation of a W=12.3 Star by (164337) 2005 EM118

Fri eve Feb 21 2025 at 10:57:13pm

OWc page

This is a decent event, but short, only 0.3s. Will require short integration. 4x and no more, I suggest. I plan to go to Canham Rd in Scotts Valley

Alt=59, Az = 186 in Hydra

 

     

 

Results:

 

Richard Nolthenius

I did indeed set up at Canham Rd, at the Glenwood Open Space parking lot, in the very center of it. Skies were clear, calm, and very dark. I observed at 2x, used median filtering in PyMovie. Conditions were excellent, to allow a 12.4 star to be gotten with 2x and such clean light curves. Short, at 0.24s, but 5.8 sigma false positive test success.

Long 122 00 03.74
Lat 37 04 45.80
elev 242m

Start: 06:55:37 UT
end: 06:58:30 UT

magDrop report: percentDrop: 90.3 magDrop: 2.529 +/- 1.441 (0.95 ci)

DNR: 2.34

D time: [06:57:13.2101]
D: 0.6800 containment intervals: {+/- 0.0130} seconds
D: 0.9500 containment intervals: {+/- 0.0414} seconds
D: 0.9973 containment intervals: {+/- 0.0927} seconds

R time: [06:57:13.4501]
R: 0.6800 containment intervals: {+/- 0.0130} seconds
R: 0.9500 containment intervals: {+/- 0.0414} seconds
R: 0.9973 containment intervals: {+/- 0.0927} seconds

Duration (R - D): 0.2400 seconds
Duration: 0.6800 containment intervals: {+/- 0.0203} seconds
Duration: 0.9500 containment intervals: {+/- 0.0505} seconds
Duration: 0.9973 containment intervals: {+/- 0.1012} seconds

 

       

 

Kirk Bender