The first Indian dedicated satellite for astronomy research, Astrosat, is getting ready for its launch tomorrow. The Polar Satellite Launch Vehicle PSLV-C30 will carry it into a low earth equatorial orbit after its take off from the first launch pad of Satish Dhawan Space Centre, Sriharikotta at 10 am on Monday, along with six small satellites of international customers. <br/><br/>PSLV will fly in its extended configuration this time, keeping in view the total payload weight of 1631 kg. Our correspondent reports, the speciality of Astrosat is its ability to observe celestial bodies like distant stars and cosmic X-Ray sources in different wavelengths simultaneously.<br/><br/>AIR correspondent reports, the scientists of the Indian Space Research Organization ISRO are giving the launch vehicle PSLV-C30 final touches for its 31st flight tomorrow. Mr Deviprasad Karnik told AIR News, filing up of propellants and oxidizers into its three lower fuel stages are going on now, as part of the 50-hour countdown process. The fourth stage filling has been completed already. <br/><br/>Along with Astrosat, four identical nano-satellites of Spire Global Inc., the US, a micro-satellite from Indonesia and a nano-satellite of the University of Toronto, Canada are also set to take off. Within 22 minutes 33 seconds of ignition of the PSLV, it would lob Astrosat in its 650 km orbit, followed by the smaller payloads. The science research mission Astrosat with five years of intended operational life would serve as a space observatory.