STScI Calibration Data System

ACS Distortion Correction

These tables contain the coefficients of the polynomials used in the pipeline to correct the geometric distortion in ACS images.

To retrieve a file from the archive, click in the file name. For details on how to correctly set up the Archive retrieval options for reference files, check our Help page.

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See the reference file delivery logsheet for more information. These files can also be downloaded directly from the jref directory. If you choose to access the files via this ftp server, keep in mind that there is a known bug in trying to access files via ftp server using Safari. The recommended browser is Firefox.

File Detector Use After Pedigree Delivery # Delivery Date OTFR Start Use Date Comments
v8q14451j_idc.fits WFC Oct 21 2002 00:00:00 UT INFLIGHT 12309 Aug 26 2011 14:47:00 GMT Aug 26 2011 16:08:57 GMT YSIZE for POL* updated to 2046 in order to accommodate astrodrizzle
v8q14450j_idc.fits WFC Mar 01 2002 00:00:00 UT INFLIGHT 12309 Aug 26 2011 14:47:00 GMT Aug 26 2011 16:08:57 GMT YSIZE for POL* updated to 2046 in order to accommodate astrodrizzle
v8q1444tj_idc.fits WFC Jun 21 2011 21:00:00 UT INFLIGHT 12309 Aug 26 2011 14:47:00 GMT Aug 26 2011 16:08:57 GMT YSIZE for POL* updated to 2046 in order to accommodate astrodrizzle
v8q1444sj_idc.fits WFC Jan 01 2009 00:00:00 UT INFLIGHT 12309 Aug 26 2011 14:47:00 GMT Aug 26 2011 16:08:57 GMT YSIZE for POL* updated to 2046 in order to accommodate astrodrizzle
v6m2008mj_idc.fits SBC Jun 21 2011 21:00:00 UT INFLIGHT 12293 Jun 22 2011 20:12:02 GMT Jun 22 2011 20:56:37 GMT Aperture shifts applied to match June 21 2011 FGS update.----------
s5f1959lj_idc.fits SBC Jul 17 2007 00:00:00 UT INFLIGHT 11861 May 15 2008 20:03:18 GMT May 15 2008 20:55:05 GMT Distortion coefficients derived from NGC 604 reference field First
s5d1409dj_idc.fits SBC Oct 21 2002 00:00:00 UT INFLIGHT 11855 May 13 2008 14:12:50 GMT May 13 2008 15:28:23 GMT Distortion coefficients derived from NGC 604 reference field First
o911150jj_idc.fits SBC Mar 01 2002 00:00:00 UT INFLIGHT 11476 Sep 01 2004 17:17:35 GMT Sep 01 2004 18:08:17 GMT Filter-dependent distortion coefficients
q692007bj_idc.fits HRC Oct 21 2002 00:00:00 UT INFLIGHT 11633 Jun 09 2006 20:12:00 GMT Jun 09 2006 21:09:08 GMT Created using texpand File created June 9th by Colin Cox
p7d1548qj_idc.fits HRC Mar 01 2002 00:00:00 UT INFLIGHT 11582 Jul 13 2005 15:53:22 GMT Jul 13 2005 16:24:21 GMT Parameters for geometric distortion correction ehrcpre_idc.fits ren