some updates from Herschel's twitter account (https://twitter.com/ESAHerschel)
Through the night of May 13/14 Herschel's thrusters fired for over 7 hours to put it into a non-return trajectory outside the Earth's orbit.
@ESAHerschel will now drift away from Earth, while continuing to work on technology tests into June.
Where is @ESAHerschel now? At midnight it was 1862398km from Earth and moving away at a leisurely pace, now working on SPIRE tests.
Around 15:30UT this afternoon HIFI was finally switched off after (almost) 4 years work in space. SPIRE is the last instrument left on.
meanwhile, monitoring of solar radiation using the SREM instruments continue. particles from a flare in sunspot group 1748 were recorded the past week http://proteus.space.noa.gr/~srem/herschel...2013_P_flux.png