Navamsha: An Essential Tool for Predictive Astrology Several techniques have been described in the book on how to use Navamsha, one of the most important divisional charts in Vedic Astrology. The customary practice of every Astrologer is to erect Rashi chart, Navamsha chart and Bhava chart before venturing into delineation. After the Rashi chart, Navamsha chart is the most required and important chart. As said in the dictum Grahanam Amshikam Balam, it is easy to understand the strength and weakness of a planet from the Navamsha chart. Relating Navamsha with Rashi chart. Several techniques on use of Navamsha. Age at the time of important events from Navamsha. Rashi Tulya Navamsha. Planets in Different Navamshas.  Dr T S VASAN: He has Science and Law degrees to his credit. For the last five decades he is working as the Director of Modern Astro Studios founded by his father, giving astrological consultation and advice to the needy. He has been honoured with several titles by foreign and Indian organizations. He is also a National Vice President of Indian Council of Astrological Sciences (ICAS), India, with whom he has been teaching Vedic Astrology since 1986.