The Occultation of a G=14.6, R=13.85 star (14.5 Combined) by the Asteroid (1882) Rauma

Aug 17, 2023 at 10:55pm

 

This is a very tough event, but if clear, might be worth a try. The rank is good, the odds of a hit in Santa Cruz is 80%. But it lasts only 1.6s max, but it's a full drop, and so a good long integration like 32x might get it OK, giving up to 3 integrations with the brightness at ~zero and good enough out of the occultation to satisfy the red bar test.

     

 

Results:

I got adventurous, and the sky looked like it would be totally clear and very dark above the fog, so I went for it. Set up at Sunlit Ln just above the fog, got the event just above the trees on the south side of the airfield. 32x gave a solid frame to frame view of the target. Probably could have gone with 16x since the sky was so dark. But, no event. A miss.

The star focused well, and all the different apertures in the 10-aperture set I asked for, look almost identical.

7 of the 10 apertures plotted all together here on the target. Virtually identical light curve, and the vertical bar is on the predicted event time. If I got an even most likely I'd see 3 consecutive points very close to zero.

Seems clearly to be a miss, or an event so short it does not detectably alter the integration values, which is rather unlikely.