Analysis Filling Factor Catalogue of Different Wavelength SODISM Images

Amro F. Alasta (1) , Mustapha Meftah (2) , Rami Qahwaji (1) , Abdrazag Algamudi (1) , Fatma Almesrati (1)

1 School of Electrical Engineering and Computer Science [Bradford]
2 STRATO - LATMOS

The Solar Diameter Imager and Surface Mapper’s (SODISM) recording of data on the PICARD satellite in five different wavelengths has increased the need to extract features such as Sunspots. This paper analyses the overall sunspot detection performance, examines the correlation between the filling factor of different SODISM wavelengths and the Solar and Heliospheric Observatory (SOHO) filling factor, and compares them with the USAF/NOAA catalogue. Four months of data from SODISM and SOHO, obtained for the period Aug–Dec 2010, are analysed and compared. This comparison identifies the best wavelength for sunspot detection in SODISM, and compares the overall detection performance of three wavelengths; 535.7 nm, 607.1 nm and 782.2 nm. Furthermore, the study proposes a novel SODISM catalogue summarising SODISM data details including the Filling Factor, area, and the number of sunspots.

Mots clés: SODISM; Sunspots; Wavelengths; SOHO; PICARD; Filling Factors catalogue

Domaines: Astrophysique stellaire et solaire [astro-ph.SR]

Amro F. Alasta, Mustapha Meftah, Rami Qahwaji, Abdrazag Algamudi, Fatma Almesrati. Analysis Filling Factor Catalogue of Different Wavelength SODISM Images. Miraz M., Excell P., Ware A., Soomro S., Ali M. (eds). Emerging Technologies in Computing. iCETiC 2019. Lecture Notes of the Institute for Computer Sciences, Social Informatics and Telecommunications Engineering, 285, Springer, pp.292-304, 2019, Emerging Technologies in Computing. iCETiC 2019, 978-3-030-23942-8. ⟨10.1007/978-3-030-23943-5_23⟩. ⟨insu-02264966⟩