diff options
| author | dencheva <dencheva@stsci.edu> | 2012-10-31 15:30:13 -0400 |
|---|---|---|
| committer | dencheva <dencheva@stsci.edu> | 2012-10-31 15:30:13 -0400 |
| commit | 4be66866b819e49c0ce23e40673879106cf6f5ab (patch) | |
| tree | 9908c0ab74b63acfc7d4499052e18146530fee46 /doc/npol_tsr/source/index.rst | |
| parent | 79824b1d42db580dc1473504488599945a2c7b48 (diff) | |
| download | stwcs_hcf-4be66866b819e49c0ce23e40673879106cf6f5ab.tar.gz | |
Added NPOL TSR
git-svn-id: http://svn.stsci.edu/svn/ssb/stsci_python/stsci_python/trunk/stwcs@20138 fe389314-cf27-0410-b35b-8c050e845b92
Diffstat (limited to 'doc/npol_tsr/source/index.rst')
| -rw-r--r-- | doc/npol_tsr/source/index.rst | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/doc/npol_tsr/source/index.rst b/doc/npol_tsr/source/index.rst index 733ccdc..2210ca0 100644 --- a/doc/npol_tsr/source/index.rst +++ b/doc/npol_tsr/source/index.rst @@ -6,6 +6,19 @@ TSR 2012-03: NPOL Reference File NPOL Reference File TSR ======================= +.. abstract:: + :author: Nadezhda Dencheva, Warren Hack + :date: 12 Oct 2010 + + The HST pipeline originally used two types of reference files to correct for distortion: + ``IDCTAB`` files which contain the coefficients for a polynomial correction and + ``DGEO`` files which are images with the residual distortion. A new format for the residual + distortion, called ``NPOL`` files (extension ``_npl.fits``), is presented in this document. + The conversion from ``DGEO`` files to ``NPOL`` files is described and an example of the format is given + using ACS/WFC F606W filter. Tests of the conversion procedure show that the + differences between the ``DGEO`` files and ``NPOL`` files are of the order of :math:`10^{-4}` + pixels. + Contents: .. toctree:: |