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<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<meta name="Author" content="Thomas Ott">
<title>QFitsView Main Display</title>
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<h1>QFitsView Main Display</h1>
<p>
The main display shows the currently loaded FITS image. The brightness and
contrast can be adjusted by dragging with the left mouse button pressed
inside the display. A right click will show a popup menu with some commands.
<p>
The following keys have a meaning inside this window:
<ul>
<li><b>d</b>: Press and move mouse while pressed to measure distances</li>
<li><b>g</b>: Do a two-dimensional gauss fit to the area under the
mouse cursor</li>
<li><b>l</b>: Stop / Start updating on mouse movements</li>
</ul>
When a FITS cube is loaded, the following additional keys are available to
manually extract a spectrum:
<ul>
<li><b>s</b>: Add source pixel</li>
<li><b>c</b>: Add continuum pixel</li>
<li><b>x</b>: Remove pixel from spectrum</li>
<li><b>r</b>: Completely remove manually defined spectrum</li>
</ul>
The manually defined spectrum is shown in green on the
<a href="cubespectrum.html">Cube Spectrum Window</a>.
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