  Ground layer turbulence is a very important site characterization parameter
used to assess the quality of an astronomical site. The Lunar Scintillometer is
a simple and effective site-testing device for measuring the ground layer
turbulence. It consists of a linear array of photodiodes which are sensitive to
the slight variations in the moon's brightness due to scintillation by the
lower layers of the Earth's atmosphere. The covariance of intensity values
between the non-redundant photodiode baselines can be used to measure the
turbulence profile from the ground up to a height determined by the furthest
pair of detectors. The six channel lunar scintillometer that has been developed
at the Indian Institute of Astrophysics is based closely on an instrument built
by the team led by Andrei Tokovinin of Cerro Tololo Inter-American Observatory
(CTIO), Chile. We have fabricated the instrument based on the existing
electronic design, and have worked on the noise analysis, an EMI
(Electromagnetic Induction) resistant PCB design and the software pipeline for
analyzing the data from the same. The results from the instrument's multi-year
campaign at Mount Saraswati, Hanle is also presented.
