Hristo Pavlov 4-th Trans Tasman Symposium on Occultations 5 April 2010, Canberra

 Started as project for Astrometry  Significant learning for me, read many papers on the topics of Photometry and Astrometry  Shifted the main focus from astrometry to asteroid occultation measurements  First line of code written in April 2009  In closed beta testing since January 2010  Planned release date as public beta – May 2010

 Improved tracking  Easier to reduce light curves by new users and more control for advanced users  Ability to save and send a small in size light curve file that can be used by others to do additional reductions  More ways to do photometry  Ability to correct for Flats and Darks

 Image Calibration (Darks & Flats)  Digital Filters  Photometry – algorithms  Photometry – standard system as filters  Photometry - variable star methodology  Astrometry  Spacecraft Star Orientation – lost in space algorithms  Packages for stellar photometry  CCD and Video camera documentation

 Stetson. P., 1986, "DAPHOT: A computer program for crowded-field stellar photometry", bin/bib_query?bibcode=1987PASP S&db_key=ASThttp://adsabs.harvard.edu/cgi- bin/bib_query?bibcode=1987PASP S&db_key=AST  Stetson. P., 1989, "The techniques of least squares and stellar photometry with CCDs",  Mighell, K., 1999, "Algorithms for CCD Stellar Photometry", ellkj.pdf ellkj.pdf  Fadeyev, V., 2004, "PSF Photometry Lecture",

 April – September 2009: Built a prototype to test the photometry and astrometry algorithms that are going to be used  June – July 2009: Acquired and reported astrometry of bright asteroids and comets using the prototype to test the astrometry precision (~ 0.3”)  October 2009: Did tests of the photometric algorithms with real star fields. Published the results on my web site at: Photometry.html Photometry.html

 Developed between November 2009 – April 2010  Used code from the prototype  Rewrite of the tracking to add significant improvements  In closed beta testing since January 2010

DEMO AJ55 (17h 56m 36s -26d55'42'').AVI 12:12:35 – 12:13:05

DEMO2 - REC_049.AVI 9:11:08 – 9:12:08

DEMO3 - DEMO _Nealley 41m25s.AVI 10:41:18 – 10:41:31

DEMO5 - Dione.lc

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