گذر زهره بصورت سه بعدی

Continuous observations of solar activity are made possible by a global network of NISP telescopes. At any given time, between 1 and 4 of our telescopes are observing the Sun simultaneously from different locations on earth. A parallax effect is observed by combining pairs of simultaneous observations. Early astronomers used the parallax effect to calculate the earth-sun distance.

To prepare for the upcoming Venus Transit, we