The Spektr-RG or Spectrum-XG (SXG) is a Russian-German observatory-class mission. The observatory is intended to study the interplanetary magnetic field, galaxies and black holes. It will carry a complement of five telescopes spanning the energy range from the far ultraviolet to the hard X-ray, plus an all-sky monitor.
The mission is a revived, redesigned version of the earlier Spektr-RG (SXG) mission cancelled in 2002. The development of this new mission was started in 2005.
The payload consists of:
SXG will be in a halo orbit around the Lagrange point L-2. The mission will spend 3 months flight to L2 including verification and calibration phases, then 4 years performing an all sky survey (8 × ½ year) and finally 3.5 years pointed observations.
The satellite will be based on Lavochkin's Navigator bus and will be launched on a Zenit-3F combination. The launch was originally to take place in 2013, but was delayed to late 2016 or early 2017. Due to the delays, a switch to a Proton-M Briz-M booster was done.
|Type / Application:||Astronomy, X-Ray|
|Power:||2 deployable solar arrays, batteries|
|Mass:||2647 kg (launch); 2267 kg (dry)|
|Spektr-XG (SXG)||-||2017||Ba||Proton-M Briz-M (Ph.4)|