n></span><span class="default_value"><span class="pre">5</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">gain</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">1.0</span></span></em>, <em class="sig-param"><span class="n"><span class="pre">readnoise</span></span><span class="o"><span class="pre">=</span></span><span class="default_value"><span class="pre">6.5</span></span></em>, <em class="sig-param"><span class="n"><span 