This file describes a method to create large mosaics from the Milky Way JScanam HPDP maps. The first step is to download all the Milky Way fits file maps on the same directory and unzip them. Install Swarp if it's not already present in your system: http://www.astromatic.net/software/swarp After that we can run the following commands in the console: swarp @redMapsList.txt -c mwFull.swarp -IMAGEOUT_NAME mw-red.fits -CENTER "0.0, +0.0" swarp @blueMapsList.txt -c mwFull.swarp -IMAGEOUT_NAME mw-blue.fits -CENTER "0.0, +0.0" swarp @redMapsList0.txt -c mw.swarp -IMAGEOUT_NAME mw0-red.fits -CENTER "168.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList1.txt -c mw.swarp -IMAGEOUT_NAME mw1-red.fits -CENTER "144.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList2.txt -c mw.swarp -IMAGEOUT_NAME mw2-red.fits -CENTER "120.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList3.txt -c mw.swarp -IMAGEOUT_NAME mw3-red.fits -CENTER "96.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList4.txt -c mw.swarp -IMAGEOUT_NAME mw4-red.fits -CENTER "72.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList5.txt -c mw.swarp -IMAGEOUT_NAME mw5-red.fits -CENTER "48.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList6.txt -c mw.swarp -IMAGEOUT_NAME mw6-red.fits -CENTER "24.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList7.txt -c mw.swarp -IMAGEOUT_NAME mw7-red.fits -CENTER "0.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList8.txt -c mw.swarp -IMAGEOUT_NAME mw8-red.fits -CENTER "-24.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList9.txt -c mw.swarp -IMAGEOUT_NAME mw9-red.fits -CENTER "-48.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList10.txt -c mw.swarp -IMAGEOUT_NAME mw10-red.fits -CENTER "-72.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList11.txt -c mw.swarp -IMAGEOUT_NAME mw11-red.fits -CENTER "-96.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList12.txt -c mw.swarp -IMAGEOUT_NAME mw12-red.fits -CENTER "-120.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList13.txt -c mw.swarp -IMAGEOUT_NAME mw13-red.fits -CENTER "-144.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @redMapsList14.txt -c mw.swarp -IMAGEOUT_NAME mw14-red.fits -CENTER "-168.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList0.txt -c mw.swarp -IMAGEOUT_NAME mw0-blue.fits -CENTER "168.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList1.txt -c mw.swarp -IMAGEOUT_NAME mw1-blue.fits -CENTER "144.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList2.txt -c mw.swarp -IMAGEOUT_NAME mw2-blue.fits -CENTER "120.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList3.txt -c mw.swarp -IMAGEOUT_NAME mw3-blue.fits -CENTER "96.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList4.txt -c mw.swarp -IMAGEOUT_NAME mw4-blue.fits -CENTER "72.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList5.txt -c mw.swarp -IMAGEOUT_NAME mw5-blue.fits -CENTER "48.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList6.txt -c mw.swarp -IMAGEOUT_NAME mw6-blue.fits -CENTER "24.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList7.txt -c mw.swarp -IMAGEOUT_NAME mw7-blue.fits -CENTER "0.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList8.txt -c mw.swarp -IMAGEOUT_NAME mw8-blue.fits -CENTER "-24.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList9.txt -c mw.swarp -IMAGEOUT_NAME mw9-blue.fits -CENTER "-48.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList10.txt -c mw.swarp -IMAGEOUT_NAME mw10-blue.fits -CENTER "-72.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList11.txt -c mw.swarp -IMAGEOUT_NAME mw11-blue.fits -CENTER "-96.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList12.txt -c mw.swarp -IMAGEOUT_NAME mw12-blue.fits -CENTER "-120.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList13.txt -c mw.swarp -IMAGEOUT_NAME mw13-blue.fits -CENTER "-144.0, +0.0" -IMAGE_SIZE "27000,6750" swarp @blueMapsList14.txt -c mw.swarp -IMAGEOUT_NAME mw14-blue.fits -CENTER "-168.0, +0.0" -IMAGE_SIZE "27000,6750" The first two swarp calls create a complete (360 degrees) mosaic of the Milky Way in the red and blue bands. The second block of swarp calls creates multiple mosaics that are 24 degrees wide and offset by the same amount. It is possible to generate a video form the mosaics running the following commands sequentially: python mwClean.py python mwCoverageLimits.py python mwScale.py python mwVideo.py Note that you will need to install first numpy, astropy and OpenCV for python: http://www.astropy.org/ http://www.numpy.org/ http://opencv.org/