Chandra X-Ray Observatory
Skip to the navigation links
Last modified: 13 March 2017


tg_part is either keyword or column in data products associated with the HETG or LETG data products. The numeric value indicates which grating arm the data in the file (keyword) or row in the file (column) represent.

tg_part Grating Arm
0 Zerth order (non-dispersed)
1 HEG arm of the HETG
2 MEG arm of the HETG

Last modified: 13 March 2017
Smithsonian Institute Smithsonian Institute

The Chandra X-Ray Center (CXC) is operated for NASA by the Smithsonian Astrophysical Observatory. 60 Garden Street, Cambridge, MA 02138 USA.   Email: Smithsonian Institution, Copyright © 1998-2017. All rights reserved.