Chintamani Ragoonatha Charry was the first Indian to study and practice the European techniques of observational astronomy. He was associated with the Madras Observatory and was one of the few Indians to be nominated as members of the Royal Society. He was quite conversant with the use of telescopes and methods of calculation for prediction of eclipses by both siddhantic and European methods. He had understood the cause of errors in the siddhantic calculations and tried his best to convince the contemporary Panchang makers of the importance of observations. The transit of Venus in 1874 provided a very good opportunity for him to reach the fellow Indians. On the same lines of the monograph he wrote on the solar eclipse, in 1868, he wrote another to cover the rare event of the Venus transit. As the first science communicator, he wrote three versions of the book one in English, the second in Kannada and the third in Urdu. Here is a comparative study of the three texts - it turns out that they are not mere translations but three independent texts written by the same author for different readers on the same subject!