Indian Space Research Organisation (ISRO) has successfully launched country’s first advance earth observation satellite- “Hyper Spectral Imaging Satellite (HysIS)”, along with 30 other satellites from eight countries. These satellites were launched on board of ISRO’s workhorse PSLV-C43 from Satish Dhawan Space Centre (SDSC) at Sriharikota in Andhra Pradesh.
- PSLV-C43 was the 45th flight of Polar Satellite Launch Vehicle (PSLV) with a combined payload of 641.5kg.
- It was the ‘Core Alone’ version of PSLV i.e. lightest version of the launch vehicle.
- PSLV is a four stage launch vehicle with alternating solid and liquid stages.
- HysIS, weighing around 380 kg was the primary payload of this PSLV-C43 mission.
- The co-passengers of HysIS included 1 micro and 29 nano satellites from eight different countries including one each from Australia, Canada, Columbia, Finland, Malaysia, Netherlands, Spain and 23 from US.
- All these satellites were commercially contracted for launch through ISRO’s commercial arm Antrix Corporation Limited.
- All these satellites were placed in a 504 km orbit.
- The satellites were ejected in two orbits by restarting the rocket’s fourth-stage engine twice.
- PSLV had first released HysIS into orbit at 636 km, 17 minutes after launch.
- Later,the engine of rocket’s fourth stage was restarted to place the remaining satellites into desired orbits.
Hyper Spectral Imaging Satellite (HysIS) :
It is India’s first hyperspectral imaging satellite for advanced earth observation developed indigenously by ISRO. It was placed in the 636 km-polar sun synchronous orbit with an inclination of 97.957 degree.It has a mission life of five years.Its primary goal is to study earth’s surface in visible near infrared and shortwave infrared regions of electromagnetic spectrum within a bandwidth of 400nm-2500nm wavelength.