X-ray astronomy not dead yet : NuSTAR

June 14, 2012

The news earlier this week was that ESO announced the ELT was DEFINITELY MAYBE going ahead. There is just this kinda small money detail thing. Anyway, all systems standby-to-go ! When they give us the money ! Actually, it does exude a feeling of almost unstoppable momentum. And furthermore no more major re-designs seem likely. We know what we will build. SKA has also picked up momentum of course. Phase I is a done deal and looks dead good already, but Phase II is still an opium dream really. Anyhoo. With all these exciting but expensive things looming, you can see why STFC needed to close down those tinnsy-winnsy 4m telescopes. Need that headroom !

PeterC wrote a post linking this to the earlier Athena shenanigans : OIR and X-ray astronomy seem to be hitting the all-or-nothing funding wall at the same time. Meanwhile old chum Martin is doing his Cassandra thing in Nature.  But But But the lovely news from yesterday is that NuSTAR had a successful launch. You could read the Beeb version here, watch the NASA launch movie here, or get the real goods from the SPIE paper here. (Seven down is the one to read).  NuStAR is  a hard X-ray mission which cost only $170M. The picture below (taken from the NuSTAR web site) does the sell :

Effective area of NuSTAR mirrors versus energy. Jeez, thats good.

At hard X-ray energies it is WAY more sensitive than XMM or Chandra. On the other hand, the resolution is fairly crummy – 10 arcsec FWHM. So you can see that it won’t be a general purpose X-ray observatory, but it will do some areas of science fantastically well. I would say the most exciting mission of recent times was WISE, and that wasn’t billions either. So it can be done.

Its also technologically cute, with a 10m extendable boom, a multi-layer coating mirror to get reflectivity at slightly better than the otherwise tiny grazing incidence angles, and Cadmium Zinc thingy detectors. And all the data will be public.

So good luck to NuSTAR … and especially with the boom opening !