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  <div class="section" id="wfpc2-imageobjects">
<span id="wfpc2data"></span><h1>WFPC2 ImageObjects<a class="headerlink" href="#wfpc2-imageobjects" title="Permalink to this headline">¶</a></h1>
<dl class="class">
<dt id="drizzlepac.wfpc2Data.WFPC2InputImage">
<em class="property">class </em><tt class="descclassname">drizzlepac.wfpc2Data.</tt><tt class="descname">WFPC2InputImage</tt><big>(</big><em>filename</em>, <em>group=None</em><big>)</big><a class="headerlink" href="#drizzlepac.wfpc2Data.WFPC2InputImage" title="Permalink to this definition">¶</a></dt>
<dd><p>Bases: <a class="reference internal" href="baseobjects.html#drizzlepac.imageObject.imageObject" title="drizzlepac.imageObject.imageObject"><tt class="xref py py-class docutils literal"><span class="pre">drizzlepac.imageObject.imageObject</span></tt></a></p>
<dl class="method">
<dt id="drizzlepac.wfpc2Data.WFPC2InputImage.buildMask">
<tt class="descname">buildMask</tt><big>(</big><em>chip</em>, <em>bits=0</em>, <em>write=False</em><big>)</big><a class="headerlink" href="#drizzlepac.wfpc2Data.WFPC2InputImage.buildMask" title="Permalink to this definition">¶</a></dt>
<dd><p>Build masks as specified in the user parameters found in the
configObj object.</p>
</dd></dl>

<dl class="method">
<dt id="drizzlepac.wfpc2Data.WFPC2InputImage.doUnitConversions">
<tt class="descname">doUnitConversions</tt><big>(</big><big>)</big><a class="headerlink" href="#drizzlepac.wfpc2Data.WFPC2InputImage.doUnitConversions" title="Permalink to this definition">¶</a></dt>
<dd><p>Apply unit conversions to all the chips, ignoring the group parameter.
This insures that all the chips get the same conversions when this
gets done, even if only 1 chip was specified to be processed.</p>
</dd></dl>

<dl class="method">
<dt id="drizzlepac.wfpc2Data.WFPC2InputImage.find_DQ_extension">
<tt class="descname">find_DQ_extension</tt><big>(</big><big>)</big><a class="headerlink" href="#drizzlepac.wfpc2Data.WFPC2InputImage.find_DQ_extension" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the suffix for the data quality extension and the name of the file
which that DQ extension should be read from.</p>
</dd></dl>

<dl class="method">
<dt id="drizzlepac.wfpc2Data.WFPC2InputImage.getEffGain">
<tt class="descname">getEffGain</tt><big>(</big><big>)</big><a class="headerlink" href="#drizzlepac.wfpc2Data.WFPC2InputImage.getEffGain" title="Permalink to this definition">¶</a></dt>
<dd><p>Method used to return the effective gain of a instrument&#8217;s
detector.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name" colspan="2">Returns:</th></tr>
<tr class="field-odd field"><td>&nbsp;</td><td class="field-body"><p class="first"><strong>gain</strong> : float</p>
<blockquote class="last">
<div><p>The effective gain.</p>
</div></blockquote>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="method">
<dt id="drizzlepac.wfpc2Data.WFPC2InputImage.getReadNoise">
<tt class="descname">getReadNoise</tt><big>(</big><em>exten</em><big>)</big><a class="headerlink" href="#drizzlepac.wfpc2Data.WFPC2InputImage.getReadNoise" title="Permalink to this definition">¶</a></dt>
<dd><p>Method for returning the readnoise of a detector (in counts).</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name" colspan="2">Returns:</th></tr>
<tr class="field-odd field"><td>&nbsp;</td><td class="field-body"><p class="first"><strong>readnoise</strong> : float</p>
<blockquote class="last">
<div><p>The readnoise of the detector in <strong>units of counts/electrons</strong>.</p>
</div></blockquote>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="method">
<dt id="drizzlepac.wfpc2Data.WFPC2InputImage.getdarkcurrent">
<tt class="descname">getdarkcurrent</tt><big>(</big><em>exten</em><big>)</big><a class="headerlink" href="#drizzlepac.wfpc2Data.WFPC2InputImage.getdarkcurrent" title="Permalink to this definition">¶</a></dt>
<dd><p>Return the dark current for the WFPC2 detector.  This value
will be contained within an instrument specific keyword.
The value in the image header will be converted to units
of electrons.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name" colspan="2">Returns:</th></tr>
<tr class="field-odd field"><td>&nbsp;</td><td class="field-body"><p class="first"><strong>darkcurrent</strong> : float</p>
<blockquote class="last">
<div><p>Dark current for the WFPC3 detector in <strong>units of counts/electrons</strong>.</p>
</div></blockquote>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="method">
<dt id="drizzlepac.wfpc2Data.WFPC2InputImage.getflat">
<tt class="descname">getflat</tt><big>(</big><em>chip</em><big>)</big><a class="headerlink" href="#drizzlepac.wfpc2Data.WFPC2InputImage.getflat" title="Permalink to this definition">¶</a></dt>
<dd><p>Method for retrieving a detector&#8217;s flat field.</p>
<table class="docutils field-list" frame="void" rules="none">
<col class="field-name" />
<col class="field-body" />
<tbody valign="top">
<tr class="field-odd field"><th class="field-name" colspan="2">Returns:</th></tr>
<tr class="field-odd field"><td>&nbsp;</td><td class="field-body"><p class="first"><strong>flat</strong> : array</p>
<blockquote class="last">
<div><p>The flat-field array in the same shape as the input image.</p>
</div></blockquote>
</td>
</tr>
</tbody>
</table>
</dd></dl>

<dl class="method">
<dt id="drizzlepac.wfpc2Data.WFPC2InputImage.setInstrumentParameters">
<tt class="descname">setInstrumentParameters</tt><big>(</big><em>instrpars</em><big>)</big><a class="headerlink" href="#drizzlepac.wfpc2Data.WFPC2InputImage.setInstrumentParameters" title="Permalink to this definition">¶</a></dt>
<dd><p>This method overrides the superclass to set default values into
the parameter dictionary, in case empty entries are provided.</p>
</dd></dl>

<dl class="attribute">
<dt id="drizzlepac.wfpc2Data.WFPC2InputImage.SEPARATOR">
<tt class="descname">SEPARATOR</tt><em class="property"> = '_'</em><a class="headerlink" href="#drizzlepac.wfpc2Data.WFPC2InputImage.SEPARATOR" title="Permalink to this definition">¶</a></dt>
<dd></dd></dl>

</dd></dl>

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