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<a class="headtitle" href="munipack.html">Munipack</a>
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<a class="headsubtitle" href="munipack.html">The astronomical image processing software</a>
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<section>
<h1>Run-time Environment</h1>
<p class="abstract">
Setting of run-time environment can be used to modify of global parameters.
</p>
<h2 id="fitsenv">FITS environment variables</h2>
<p>
FITS environment variables are commonly used to redefine a value of keywords
of a FITS header.
For instance, FITS_KEY_FILTER - redefines FILTER keyword, etc. Other variables available
(sometimes required
during processing) are listed in <a href="man_setup.html">table</a>.
For example, when your local conventions
stores the exposure time in record labeled by EXPOSURE keyword
</p>
<pre>
...
EXPOSURE = 20.000 / [s] Exposure time
...
</pre>
<p>
use FITS_KEY_EXPTIME="EXPOSURE". Variables can be preset as:
</p>
<pre>
$ FITS_KEY_DATEOBS="DATE-BEG"
$ export FITS_KEY_DATEOBS
</pre>
<p>
For convenience, these variables can be set under Unixes as system-wide
in /etc/profile (or /etc/bash.profile, /etc/bashrc or etc.) or on per-user base in $HOME
directory: $HOME/.profile (or $HOME/.profile or $HOME/.bashrc or etc).
</p>
<p>
The identifiers (following prefix FITS_KEY_) should be
unlike to FITS keywords. That conversion
suppress confusion of the minus sign character (-) inside shell scripts.
</p>
<p>
The area of detector is <i>π(R<sup>2</sup>-r<sup>2</sup>)</i> for Newtonian reflector,
where <i>R</i> is radius of a primary mirror and <i>r</i> is radius of projection
of secondary mirror (of secondary shadow). The area of detector will be used
for photometry calibration.
</p>
<h2>Run-time</h2>
<code>
MUNIPACK_LIBEXEC, MUNIPACK_BIN
</code>
<p>
Set path(s) for executable Munipack's <a href="modules.html">modules</a>.
The values are set during installation and used very rarely, perhaps
for testing purposes.
</p>
<code>
MUNIPACK_CATCONF_PATH
</code>
<p>
A path pointing to the local configuration file for Virtual Obseravtory
catalogues.
</p>
</section>
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© 1997 – 2025
<a href="https://integral.physics.muni.cz/" title="author's homepage"
class="foot">Filip Hroch</a>
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