tion</a></li>
<li class="toctree-l2"><a class="reference internal" href="fits_dark_correction.html">4.27. dark_correction</a></li>
<li class="toctree-l2"><a class="reference internal" href="fits_flat_correction.html">4.28. flat_correction</a></li>
<li class="toctree-l2"><a class="reference internal" href="fits_ccdproc.html">4.29. ccdproc</a></li>
<li class="toctree-l2"><a class="reference internal" href="fits_background.html">4.30. background</a></li>
<li class="toctree-l2"><a class="reference internal" hre