Changes between Version 6 and Version 7 of IppTools_FAQ
- Timestamp:
- May 19, 2009, 4:18:17 PM (17 years ago)
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IppTools_FAQ
v6 v7 12 12 skycells -level 5 -scale 0.2 -nx 8 -ny 8 -fix-ns -padding 0.05 13 13 14 Here we have done 5 iterations of triangle divisions and we have set the pixel scale of the resulting cells to 0.2 arcsec/pixel. Each rectangular patch of sky is then divided into 64 skycells, with 8 divisions in x and y. The <code>fix-ns</code> command indicates that the y axis of every cell is oriented with Dec, and there is a 5% padding of each skycell to ensure sufficient overlap with neighbors. The result is a catalog that defines all the skycells necessary for filling the sky, stored in the files Images.dat and Photcodes.dat. Use the "-D CATDIR <dir>" option to specify the directory where Images.dat and Photcodes.dat should be written. The default is to make a subdirectoy called "default" in your cwd.14 Here we have done 5 iterations of triangle divisions and we have set the pixel scale of the resulting cells to 0.2 arcsec/pixel. Each rectangular patch of sky is then divided into 64 skycells, with 8 divisions in x and y. The fix-ns command indicates that the y axis of every cell is oriented with Dec, and there is a 5% padding of each skycell to ensure sufficient overlap with neighbors. The result is a catalog that defines all the skycells necessary for filling the sky, stored in the files Images.dat and Photcodes.dat. Use the "-D CATDIR" option to specify the directory where Images.dat and Photcodes.dat should be written. The default is to make a subdirectoy called "default" in your cwd. 15 15 16 16 After you've created the Images.dat and Photcodes.dat catalogs, be sure to point to them in your camera.config file:
