![](../images/banners/kwaj-banner-712-x125sm.png)
36.367 McEntaffer/Penn State Univ
the Rockets for Extended-Source X-ray Spectroscopy (tREXS)
- Mission
- Vehicle
- Launch
- Photos
The Rockets for Extended-Source X-ray Spectroscopy (tREXS) are a series of suborbital rocket payloads that fly a diffuse soft X-ray grating spectrometer. The first tREXS was launched in 2022. The spectrometer consists of passive, mechanical focusers, arrays of reflection gratings, and a focal plane consisting of CIS 113 CMOS detectors. The instrument, which has a field-of-view > 10 sq. deg., will seek to obtain the most highly-resolved spectra of diffuse soft X-ray emission from the Cygnus Loop supernova remnant. A future launch will study the Vela supernova remnant.
The Principal Investigator is Dr. McEntaffer/Penn State Univ.
PI website: https://www.mcentaffergroup.psu.edu/
![Drawing of a Terrier-Black Brant sounding rocket](../images/vehicles/Terrier-Black-Brant-sm.png)
The Black Brant 9 is a two stage sounding rocket with a Terrier first stage and Black Brant second stage. The Black Brant 9 can reach altitudes of about 600 km. Payloads weighing from 400 to 1200 pounds can be flown.
![Google Earth Map showing White Sands Missile Range.](../images/WSMR.jpg)
The tREXS missionwas launched from White Sands Missile Range, NM on September 25, 2022.
- Photos currently not available.