AAVSO Observer Code
SAMA
Affiliation
American Association of Variable Star Observers (AAVSO)
Full Name
Ari Siqueira
Location
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), the Liga Iberoamericana de Astronomía - Sección Estrellas Variables (LIADA-SEV), and the Centro de Estudos Astronômicos de Minas Gerais (CEAMIG).
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), the Liga Iberoamericana de Astronomía - Sección Estrellas Variables (LIADA-SEV), 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 |