MosaicsXIMAGE can be used to take several images from a part of the sky and make a mosaic. The first image must be read in with the center and size required for the final image. It is best to begin with a central image if possible.
Use the following procedure:
The following scripts was used to create the image above:
read/fits/size=1024/xpix=6000/ypix=2500 rp800035_im1.fits read/fits/expo/size=1024/xpix=6000/ypix=2500 rp800035_mex.fits save_image read/fits/size=1024 rp800033_im1.fits read/fits/expo/size=1024 rp800033_mex.fits sum_image save_image read/fits/size=1024 rp800034_im1.fits read/fits/expo/size=1024 rp800034_mex.fits sum_image save_image read/fits/size=1024 rp800032_im1.fits read/fits/expo/size=1024 rp800032_mex.fits sum_image cct/set spectrum lev/num=32 title " " title/lower " " disp/log vplabel "Perseus Cluster"
If exposure maps are available, read them in after each image with the exact size and center of the image they belong with. The exposure maps will be summed together when the image maps are summed.
DETECT and SOSTA will not give the correct results if the summed images come from different pointing directions. They will be unable to make any correction for off-axis vignetting and psf changes, since they reference to the detector coordinates of the last image that was read in.
Please send reports of errors to : email@example.com
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Last modified: Wednesday, 29-Mar-2006 14:33:21 EST