AAVSO Observer Code
American Association of Variable Star Observers (AAVSO)
Full Name
Ariovaldo Siqueira
Betim, Minas Gerais, BR
Background/Interesting Fact
First hooked on Astronomy during my mid-teens; fell in love with it in Athens/GA, USA, during Halley's comet perihelion in 1985-86.
Practicing photometric and spectroscopic observation of Be stars and some red giants visible from the Southern Hemisphere.
Backyard DIY observatory at 19° 57' S / 44° 15' W, 780 m; 203-mm f/10 SCT & 80-mm f/5 achromatic refractor; J-C filters, Star'EX spectrograph.
Ph.D. in Molecular and Cellular Biology, University of Georgia, Athens/GA, 1988. Retired university professor (UFMG, Brazil, 2016).
Affiliated with the AAVSO, the British Astronomical Association (BAA), the Variable Stars South/NZ (VSS), and the Centro de Estudos Astronômicos de Minas Gerais (CEAMIG).
CHOICE Courses Completed
Variable Star Classification and Light Curves 2022-04-03
Introduction to Spectroscopy 2022-07-18
Developing A Visual Observing Program 2022-08-03
Photometry using VPhot 2022-11-18
CCD Photometry, Part I 2023-05-08
CCD Photometry, Part II 2023-05-08
How to use VSTAR 2023-06-13
Advanced AstroImageJ for Exoplanet Observing 2024-03-11