Texts to attain greater analytical depth.The linkage between knowledge and power within legitimacy discourses has consistently played a pivotal role in political structures. This study employs critical discourse analysis (CDA) and Theo van Leeuwen's theoretical framework to examine the discursive mechanisms that legitimize astrologers in three key Safavid-era texts: Rawda al-Anwar Abbasi (educational-political), Risala Sana'iyya (philosophical-scientific), and Tarikh Abbasi (historical). The central research question is: How do Safavid texts portray astrologers as an integral part of political power through linguistic and ideological strategies? The methodology involves CDA coding: an initial reading to identify themes of power and knowledge, open coding for key vocabulary (e.g., "authority" or "tradition"), axial coding to categorize based on van Leeuwen's four strategies (authorization, moral evaluation, rationalization, mythopoesis), and selective coding to link findings with the Shiite-political context of the Safavids. Findings reveal that astrologers' legitimacy is reproduced primarily through authorization (references to Islamic tradition), moral evaluation (emphasis on piety and secrecy), rationalization (utility of predictions in decision-making), and mythopoesis (heroic historical narratives). This research not only enhances understanding of the interactions between astronomical knowledge and power in the Safavid era but also lays a foundation for interdisciplinary studies in art history, culture, and discourse analysis. It suggests further examination of lesser-known texts to achieve greater depth.