The book gives a glimpse of the development of the earth observation cameras in India and provides insights into the technological innovations and the leadership foresight which placed India at par with achievements elsewhere in the world, in this area. The book also covers some aspects of the management functioning in ISRO. The book starts with the beginning of the space program in India and systematically chronicles the journey of the development of advanced space based imaging system. The book also provides some basic technical insights into the building of space based remote sensing cameras, which have been presented in a way that can be understood by non-specialists too. In addition to students and professionals in the field who will get a broad account of the functioning of space based camera systems and the nuances in the design, development and deployment of them, those in policy making and technical management in space agencies across the globe will also find the book useful to understand the path taken by India to achieve pre-eminence in this field.