ISRO Chairman G Madhavan Nair on Wednesday termed as a ‘fantastic achievement’ the launch of Oceansat-2 and six other nano satellites.

"This is a fantastic achievement. Once again we have proved that we can do the job precisely," he said minutes after ISRO's warhorse rocket PSLV C-15 put in orbit the seven satellites within a span of 20 minutes.

Prime Minister Manmohan Singh conveyed his "deepest appreciation" of the space scientists on the successful conduct of the mission, Nair announced.

"Whenever we face difficulties, ISRO has always emerged stronger," George Koshy, senior space scientist incharge of launch vehicles, said.

ISRO Telemetry, Tracking and Command Network (ISTRAC) Director S K Shivakumar said that a command centre in Mauritius had picked up the signal from Oceansat-2 soon after it separated from the launch vehicle.

Vikram Sarabhai Space Centre Director K Radhakrishan said the successful launch of the seven satellites had once again demonstrated the maturity of the Polar Satellite Launch Vehicle (PSLV). He noted that this was the 15 successive, successful launch of PSLV.