Flat spectra occasionally show offset

[alexrudy]

The flat spectra away from the center of the image seem to occasionally show a 2~3 pixel offset. This is especially true of un-centered items.

Examine SEDM-FWHM-sim-flat-2012-09-14.fits for an example.

[alexrudy]

Example (from SEDM-FWHM-sim-flat-2012-09-14.fits): http://cl.ly/image/373i0q0P1C3O

[alexrudy]

Here is a spectrum number labeled example. The offsets seem to primarily occur in the right (on-screen) direction on some spectra. http://cl.ly/1v2E1c390J0L

[alexrudy]

Arbitrary offset seems to have been fixed by commit b1668ca

http://cl.ly/1C081N2j2N0H