Organisation (ISRO). The gallery showcases the development of space technology in India. There are plans to showcase models of satellite launch vehicle (SLV), polar satellite launch vehicle (PSLV), and geosynchronous satellite launch vehicle (GSLV) in the gallery, in addition to a 10-m long scale-down model of SLV 1.6, kept in a horizontal position, to explain the first, second and third stage of a rocket. A mock-up control room will also be established to explain about how a rocket is launched into the space and the ways to observe the trajectory of the rocket. There are about 8 staff at the planetarium. The centre has branches in Coimbatore, Vellore and Trichy. Planetarium features The planetarium is equipped with a versatile opto-mechanical GOTO GM II starfield projector, an accompanying special-effects projector and an X-Y table system for simulating various celestial phenomena. The GM II projector has the provision to execute the diurnal, annual, latitudinal, and precessional motions. The pierced hemispherical inner dome of the planetarium, made of aluminium, is 15 m in diameter. The air-conditioned theatre has a seating capacity of 236. The total outlay proposed for the Tenth Five-Year Plan (2002–2007) for the Periyar Science and Technology Centre and B. M. Birla Planetarium was 6.4 million, including 2.6 million for the X-Y table system at the planetarium. In 2009, the planetarium established the 360-degree sky theatre, the first in India, with the installation of a full-dome mirror projection system with a DLP projector. The 360-degree effect is created with the help of Wrap, a special software that takes care of curvature correction. The projector was installed at a cost of 2.1 million. The planetarium building features a circumferential hall of fame around the main theatre with portraits and statues of scientists and photographs and models of various heavenly bodies, celestial phenomena and space missions. In 2009, the U.S. Consulate at Chennai donated portraits of Neil Armstrong, Sunita Williams and Kalpana Chawla for display in the hall of fame to commemorate increasing Indo-U.S. space ties. The planetarium also offers courses in astronomy and night-sky observations. There is a seminar hall and a classroom studio at the planetarium, where discussions and workshops are conducted by eminent personalities in the field of astronomy. The planetarium organises a special show on every second Saturday of month to view the night sky from 7:00 pm to 9:00 pm. Under Part II Scheme for the year 2011–2012,