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docs/source/index.rst
@@ -113,7 +113,7 @@ Download the astap_amd64.deb and: | @@ -113,7 +113,7 @@ Download the astap_amd64.deb and: | ||
113 | 113 | ||
114 | sudo apt-get install ./astap_amd64.deb | 114 | sudo apt-get install ./astap_amd64.deb |
115 | 115 | ||
116 | -To use Ima.calibwcs you have to install `Astrometry.net and its quad files <https://astrometry.net/use.html>`_: | 116 | +To use Ima.calibwcs() you have to install `Astrometry.net and its quad index files <https://astrometry.net/use.html>`_: |
117 | 117 | ||
118 | .. code-block:: bash | 118 | .. code-block:: bash |
119 | 119 | ||
@@ -121,6 +121,44 @@ To use Ima.calibwcs you have to install `Astrometry.net and its quad files <http | @@ -121,6 +121,44 @@ To use Ima.calibwcs you have to install `Astrometry.net and its quad files <http | ||
121 | sudo apt install astrometry-data-tycho2 | 121 | sudo apt install astrometry-data-tycho2 |
122 | sudo apt install astrometry-data-2mass | 122 | sudo apt install astrometry-data-2mass |
123 | 123 | ||
124 | +The executable is /usr/bin/solve-field. The default directory where you have to place the index files | ||
125 | +is /usr/share/astrometry. However, if you prefer to install the index folders (4100, 4200, 5200) in | ||
126 | +another directory, you must change the following line in the configuration | ||
127 | +file /etc/astrometry.cfg (sudo): | ||
128 | + | ||
129 | +.. code-block:: bash | ||
130 | + | ||
131 | + add_path /usr/share/astrometry | ||
132 | + | ||
133 | +For example: | ||
134 | + | ||
135 | +.. code-block:: bash | ||
136 | + | ||
137 | + add_path /home/myself/astrometry.net | ||
138 | + | ||
139 | +Check solve-field is working before using Ima.calibwcs(): | ||
140 | + | ||
141 | +WCS calibration in total blind: | ||
142 | + | ||
143 | +.. code-block:: bash | ||
144 | + | ||
145 | + cd ~/Documents | ||
146 | + solve-field --crpix-center --overwrite guitastro/tests/data/m57.fits | ||
147 | + | ||
148 | +WCS calibration in case you know approximate coordinates: | ||
149 | + | ||
150 | +.. code-block:: bash | ||
151 | + | ||
152 | + cd ~/Documents | ||
153 | + solve-field --ra 180 --dec 0 --radius 3 --crpix-center --overwrite guitastro/tests/data/m57.fits | ||
154 | + | ||
155 | +WCS calibration if you know approximate spatial sampling: | ||
156 | + | ||
157 | +.. code-block:: bash | ||
158 | + | ||
159 | + cd ~/Documents | ||
160 | + solve-field --scale-units arcsecperpix --scale-low 3.5 --scale-high 3.7 --crpix-center --overwrite guitastro/tests/data/m57.fits | ||
161 | + | ||
124 | 5.2. Resources for Windows | 162 | 5.2. Resources for Windows |
125 | ========================== | 163 | ========================== |
126 | 164 |