Category: Alberto Fernando

Posts sobre actividades onde participa o Alberto Fernando.

Delta Scorpii

Lembram-se do Alberto Fernando ter escrito sobre o seu trabalho, em Tenerife, com a estrela Delta Scorpii? Leiam estes posts. Agora foi publicado um artigo científico no Astrophysics Journal, tendo por autores os portugueses Alberto Fernando e José Ribeiro. Leiam o artigo, aqui. Parabéns ao Alberto Fernando e ao José Ribeiro!

Atalaia, 01 de Outubro

Dia 1 de Outubro foi uma espécie de reentrada após o período de férias de verão. No verão as noites são curtas e quase toda a gente está de férias, de um modo qualquer. Nesta altura, as noites já são suficientemente longas e todos já regressaram aos afazeres normais. Foi assim que este encontro na …

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Atalaia, 23 de Julho

Este ano de 2011 não tem sido pródigo em fins de semana propícios à observação. Muitos dos observadores habituais adoptaram actividades não observacionais na área da astronomia; outros operam equipamentos remotamente; outros ainda enveredaram por vertentes mais  técnicas como a fotometria ou a espectroscopia. De tudo isto resulta menor afluência de observadores. A Atalaia não …

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Delta Scorpii 2011 – Dia 9, 06 de Julho

This was the last night with the team complete. Anatoly Miroshnichenko and Thierry Garrel went home and only Alberto and José Ribeiro still stay for the last night. This night number 9 was again very good and we managed to complete all the objectives. First Delta Scorpii in all the domains, the reference star 40 …

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Delta Scorpii 2011 – Dia 8, 05 de Julho

Last night has been again an excellent night. The targets were, beyond the flats, Delta Scorpii in the domains of this mission, the reference star 40 Ophiuchi, Delta Scorpii again but in Hgamma, 66 Ophiuchi, 6 Cephei and Gamma Cassiopeiae. The 6 hours of the astronomical night have been fully exploited. We wake up at …

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Delta Scorpii 2011 – Dia 7, 04 de Julho

Last night has been excellent. The wind remained within the limits all night and there were no technical problems. Like every other day, so far, we started by the flats and, by 22:40 local time, continued with Delta Scorpii in all the domains reported earlier, with the reference star 40 Ophiuchi, with 66 Ophiuchi, to …

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Delta Scorpii 2011 – Dia 6, 03 de Julho

Last night has been the first of the second part of this mission. All day long there were strong winds, with gusts. By 18:00 hours we started the capture of flats, awaiting for the astronomical night, what happens by 22:40 local time, 21:40 UTC. But the wind speed, the average for the last 5 minutes …

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Delta Scorpii – Dia 5, 2 de Julho

Last night the wind was absolutely calm at the beginning of the astronomical night and stood calm all night. The “calima” was back, denser than before. But we were able to complete all the program established for the night. By 18:00, the telescope was set to make the flats related to the previous night: – …

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Delta Scorpii – Dia 4, 01 de Julho

Last night was an almost perfect night. The wind speed did not exceed 15 km/hour and we could make the spectra of Delta Scorpii,in Helium II and Halpha, of 66 Ophiuchi, of Pi Aquarii and there were still 40 minutes for MWC342. The equipment works now correctly. We managed to have the installation of the …

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Delta Scorpii 2011 – Dia 3, 30 de Junho

Today the sky is clear of the “calima”, but the wind is quite strong, with gusts. By 18:00 hours we started with darks and flats. The wind was blowing at speeds above 35 km per hour. This is a limitation fot the IAC80. The operation is unrestricted with wind speeds up to 35 km/hour, but …

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