Chandra X-Ray Observatory
Last modified: 28 June 2018

What is the difference between the RA and DEC NOM, TARG, and PNT header keywords?

The "What was the aimpoint of the observation?" FAQ has related information on the observation aimpoint.

Last modified: 28 June 2018
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.