  An interferometer system for use at the 2.34 meter Vainu Bappu Telescope
(VBT), situated at Vainu Bappu Observatory (VBO), Kavalur, to obtain
speckle-grams of astronomical objects in the visible wavelength, has been
developed. Laboratory tests of resultant intensity distributions due to a point
source, with phase modulation screens, as well as the images obtained using
this interferometer at the cassegrain end of the said telescope are discussed.
