NINETEENTH TRANS-TASMAN SYMPOSIUM ON OCCULTATIONS
in Whakatāne, NZ and via Zoom
2025 May 12

(Updated 22 May 2025)

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UPDATE – 22 May 2025

The Trans-Tasman Occultation Alliance held the Nineteenth Trans-Tasman Symposium on Occultations (TTSO19) on 12 May 2025. TTSO19 was held in conjunction with the 2025 RASNZ Conference in Whakatāne, New Zealand. As well as the physical meeting, it was accessible online using Zoom.

A PDF of the presentation slides is linked from the ‘Speaker’ column.

The Program for TTSO19 is as below:

UTC Sun 11/5/2025	AEST	NZST	Duration (min)	Speaker	Title	Description
	Mon 12/5/2025
21:00:00	7:00:00	9:00:00	0:10:00	S. Kerr	Welcome and Introduction
21:10:00	7:10:00	9:10:00	0:30:00	S. Kerr	Round Up of TTOA Observing	Reviewing the results of observations by TTOA through 2024 with summary and statistics
21:40:00	7:40:00	9:40:00	0:40:00	D. Herald	Asteroidal Occultations	Stats, Issues and Results from 2024
22:20:00	8:20:00	10:20:00	0:30:00	Morning Break
22:50:00	8:50:00	10:50:00	0:25:00	V. Bao	A beginners perspective on Occultations
23:15:00	9:15:00	11:15:00	0:30:00	D. Herald	Occultation Astrometry by 'not-so-amateur' astronomers	The DART mission
23:45:00	9:45:00	11:45:00	0:30:00	M. Camilleri	It's about time!	How accurate and reliable is your timing source?
0:15:00	10:15:00	12:15:00	1:00:00	Lunch
1:15:00	11:15:00	13:15:00	1:30:00	M. Camilleri	PC Disciplined Timing	A workshop (hands on encouraged) on setting up a GPS disciplined PC for occultation recording using digital cameras.
2:45:00	12:45:00	14:45:00	0:30:00	Afternoon Break
3:15:00	13:15:00	15:15:00	0:30:00	D. Herald	Two Drop Lightcurves	Double stars, grazes and satellites
3:45:00	13:45:00	15:45:00	0:30:00	S. Kerr	Extracting better light curves	A walk through the various options in Tangra to get a better light curve from difficult videos.
4:15:00	14:15:00	16:15:00	0:30:00	S. Kerr	Upcoming Occultations and Campaigns
4:45:00	14:45:00	16:45:00	0:10:00	S. Kerr	Wrap Up

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