This resource describes the Simple Image Access interface provided by
TGCat. References returned are of three types: 1) evt2 files - for ACIS
for HRC see: http://c
Dispersion coordinates field image - Image of the field, in grating
dispersion coordinates, order*wavelength ("m*lambda") on the x-axis,
cross-dispersion angle [deg] (tg_d) on the y-axis. The outline shows the
grating part region. The aspect ratio is not square 3) link to html
preview page - see http://tgcat.mit.edu The Chandra Grating-Data Archive
and Catalog (TGCat) makes grating spectra easily viewable and accessible.
The browsable interface to analysis-quality spectral products (binned
spectra and corresponding response files), with the addition of summary
graphical products and model-independent flux properties tables make it
easy to find observations of a particular object, type of object, or type
of observation, to quickly assess the quality and potential usefulness of
the spectra, and to download the data and responses as a package.