PSLV

Satellite PSLV-C42 carrying NovaSAR and S1-4 will be launched by ISRO.
From Satish Dhawan Space Centre in Sriharikota, a PSLV will be launched to put two earth observation satellites from the UK to space. The 30-hour countdown for the launch began at 3.08 p.m. on Saturday. No Indian satellite is being carried on this flight.
In this year, PSLV-C42 will be the first fully commercially trip, after a long five-month calm period, for ISRO.
ISRO did not turn up after April 12, which was a replacement navigation satellite IRNSS-11 to space for PSLV-C11.A satellite GSAT-11 from South American launch port of Kourou
Just after some days, it was launch.
ISRO Chairman K.Sivan spoke from Tirupati en route to Sriharikota that the time period was not connected with the satellite recall but for the well being of customer satellites.
As even we know about PSLV. It has launched India’s first lunar probe Chandrayaan-1, India’s first interplanetary mission, Mars Orbiter Mission (Mangalyaan) and India’s first space observatory, Astrosat.

PSLV-C42 is programmed for launch at 10.08 p.m. from the launch pad. It will lift NovaSAR and S1-4 to a sun-synchronous (‘pole-to-pole’) orbit 583km from the earth.
The entire flight till the release of the satellite is planned to complete within 17.5 min. The owner of satellites is Survey Satellite Technologies Ltd., which signed a commercial launch contract with Antrix Corporation, an ISRO release said.
The first all- British radar satellite is set to go into orbit on an Indian rocket called NovaSAR. It has the ability to take pictures of the surface of the Earth in every kind of weather, day or night.
S1-4 is a high-resolution optical earth observation satellite weighing 444 kg. It will improve UK’S disaster monitoring capabilities. The satellite will also be used for monitoring the environment and resources.
Antrix is widely popular and has contracted over 200 foreign customer satellites for a fee; among which most of them are small experimental or earth observation spacecraft.

It will be the 44th PSLV and the 12th time it will fly as core-alone.