XXv ENAA 2015
The 25th national meeting of astronomy and astrophysics was organizes by CENTRA, IST.
The meeting joined 60 astrophysicists discussing all the areas of astronomy and astrophysics.
The abstract of my talk:
Spectrography using Small Telescopes: A recent contributor to stellar astrophysics
In an epoch where the largest telescope of the world is in construction, small telescopes are gaining an important role in the optical spectrographic study of bright stars. Indeed, many bright stars lack information, due to the fact that they need long time observing runs which large telescopes cannot assure. Small telescopes need small spectrographs. Their performance rivals in low and medium spectral resolution with the bigger systems, magnitude limits apart. During the CoRoT asteroseismic mission on Be stars, most of the land spectroscopic support was done with small telescopes with good results. During the last three years long term runs on the bright stars of Orion were performed with MOST (and Chandra) and more recently with BRITE constellation. Here too, small spectrographic systems gave the required land support. Since 2006 many other campaigns were organized by using such small systems in long term runs. That's the case of the WR140 periastron in 2009, epsilon Aurigae eclipse in 2010, delta Scorpii periastron in 2011 where a small Littrow was for the first time attached to the IAC80 telescope, more recently WR134, WR135 and WR137 in 2013, V339 Delphini, a nova studied from the very first day with more than one thousand spectra in five months, eta Carina periastron in 2014, only to mention the most important campaigns. Small systems are also feeding the Be star database (BeSS) leaded by the Paris Observatory and accessible through the Virtual Observatory. Alike the AAVSO for photometry, the Astronomical Ring for Access to Spectroscopy (ARAS group) gathers most of the spectrographic observers, and accepts observing campaigns from the community.