The Occultation of an 11.5 by Vibilia

May 2, 2022 at 3:08am

Preston Predictions

 

This is a high rank event that is bright, and goes right across Santa Cruz. Tough timing; Monday morning at 3am. The target is 31 degrees up, due south, in Ophiuchus. There are 7 observers signed up, not super well distributed, but we don't have much mobility here in Santa Cruz, with ocean and fog on one side, and I've got a tough teaching schedule after sunup. I am hoping to get it at home, Kirk from up Empire Grade. If fog threatens, we may have to both go up Empire Grade to escape.

The event lasts a predicted maximum of 19 seconds, so that doing the standard 10x duration for the taping duration, means we should record 3min 20s on either side of the predicted event.

 

 

Results:

We had a good success! Clear skies and good data.

 

Nolthenius Results

I observed from West Cliff, a block or so east of Woodrow St, overlooking the ocean for a good horizon. I observed at 2x for this bright star for maximum time resolution. I got a 7 minute long recording.

PyMovie screen capture. I used the default photometry values. I set the target aperture as "static" rather than adaptive, for consistency.

Here's the raw PyMovie light curve and the 17.7 second occultation

Solid event.

PyOTE analysis.

 

PyOTE Log file

 

Kirk Bender Results

         

 

Karl von Ahnen Results