Two positive occultations was recorded, using Video technique.
One clearly observed miss was recorded for this event.
View the updated prediction.
Observers: 1 T Barry,Linden Obs, Blue Mts,NSW,AU 2 D Gault,Kuriwa Observatory, NSW, AU 3(M) D Herald,Murrumbateman, NSW, AU 4(P) Prediction, 12 Nov
The ellipse above is plotted at the maximum axis ratio as determined by lightcurve inversion data. With two close by chords and one constraining miss we can be confident of the path of Alauda and that it was south of the predicted line.
The figure below shows the AOTA analysis of the Tangra light curve of Dave Herald's observation.
The figure below shows the Tangra light curve of Dave Gault's occultation.
The figure below shows the AOTA analysis of the Tangra light curve of Tony Barry's occultation.
Observation details for MP ( 702 ) Alauda By Star HIP HIP13832 On 2014-12-18 at 14:15:40.0 _______________________________ Observer Tony Barry Location Linden Observatory, Blue Mountains Longitude +150:29 Latitude -33:42 Altitude 577 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 25 cm Seeing Steady Clear other - list in comments Camera Type Flea3-03S3 with ADVS ADVS Camera Delay 0 Timing GPS - time inserted Video with frame analysis Disappearance 14:15:48.12 Reappearance 14:16:02.16 Comments: Very close to the horizon - about 6 degrees altitude. The disappearance and reappearance were not instantaneous. Please review the LC file to form your own opinion. LC file and screen shots attached. _______________________________ Observer Dave Gault Location Kuriwa Observatory, NSW, AU Longitude +150:38 Latitude -33:39 Altitude 286 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 20 cm Seeing Strong flickering Clear Camera Type Flea3-03S3 with ADVS ADVS Camera Delay 0 Timing GPS - time inserted Video with frame analysis Disappearance 14:15:47.10 Reappearance 14:16:01.10 Comments: _______________________________ Observer Dave Herald Location Murrumbateman, NSW, AU Longitude +148:59 Latitude -34:57 Altitude 594 m Datum WGS84 Telescope SCT including Cass and Mak Aperture 40 cm Seeing Strong flickering Clear wind Camera Type WAT910BD PAL/CCIR Camera Delay -0.02 Timing GPS - time inserted Video with frame analysis Missed Comments: Lightcurve from 14:15:00 to 14:17:26 by Tangra v3.1.15 using AperturePhotometry/AverageBackground. Analysis by AOTA v18.104.22.168. Report prepopulated by IOTA Reporting Add-in for OW ver.1.8