The Occultation of a W=12.8 (r) Star by (1538) Detre

Dec 6, 2024 at 11:57:18pm

OWc page

 

This is a doable but not easy event. Alt=70, Az=76, east of the meridian. Therefore, prior to the occultation the target will be lower in altitude. 70 degrees is doable with our 8SE and f/3.3 reducer but only if we push the scope in the dovetail all the way in. Pointing at this altitude can be problematic, so allow extra time to ID the target. Kirk's going to try it from up Hwy 1, north of the centerline, and I south of the centerline. Since the duration is only 0.7s, I would recommend not getting too close to the northern limit and make the duration too short to get decent FP test. The star will require at least 4x and maybe 8x,

 

     

 

Results:

Richard Nolthenius

I got a recording, unreduced at the moment

         

Kirk Bender

I got a .9 second event for Detre, 4x at Pie Ranch. Noisy, but easily passed false positive test.


magDrop report: percentDrop: 87.8  magDrop: 2.286  +/- 0.549  (0.95 ci)

DNR: 2.67

D time: [07:57:19.1438]
D: 0.6800 containment intervals:  {+/- 0.0189} seconds
D: 0.9500 containment intervals:  {+/- 0.0531} seconds
D: 0.9973 containment intervals:  {+/- 0.1215} seconds

R time: [07:57:20.0781]
R: 0.6800 containment intervals:  {+/- 0.0189} seconds
R: 0.9500 containment intervals:  {+/- 0.0531} seconds
R: 0.9973 containment intervals:  {+/- 0.1215} seconds

Duration (R - D): 0.9343 seconds
Duration: 0.6800 containment intervals:  {+/- 0.0275} seconds
Duration: 0.9500 containment intervals:  {+/- 0.0654} seconds
Duration: 0.9973 containment intervals:  {+/- 0.1265} seconds