![]() Other output image formats, besides jpeg, are png, tiff, ppm, and mpeg. ds9 name.fits -zoom to fit -saveimage jpeg filename.jpeg -exit. Quite probably there is a more elegant solution, but this works. ds9 (SAOImage ) - astronomical visualization application from SAO FITS Liberator - a plug-in for Adobe Photoshop for manipulating FITS format images. Use you favourite editor to attach these lists to each other. ![]() This will then give you a list of the RA, Dec of the same sources. If you want to match this up with the 2MASS sources then you have to "list regions" again, but this time select "fk5" as the coordinate system. This will give you a list of x,y coordinates. From this, select "x,y" for the format and "image" for the coordinate system. Another dialogue box will open asking you to select the format and coordinate system. Then, in the main image window open the "Regions" dialogue and select "List regions". It provides for easy communication with external analysis tasks and is highly configurable and extensible via XPA and. DS9 supports FITS images and binary tables, multiple frame buffers, region manipulation, and many scale algorithms and colormaps. If you are running DS9 and saoimage at the same time, then you must be in 8 bit. SAOImage DS9 is an astronomical imaging and data visualization application. DS9 runs in both 8 bit and 24 bit environments, but saoimage is restricted to 8 bit. However, the overall time to finish rendering should almost be the same. From the "File" dialogue, select "Copy to regions". So with saoimage and ximtool, you see incremental progress, where DS9 will render the image all at one time. When you load the catalog you should see a window open entitled "2MASS Point sources" which lists all the sources in your image. Is what you are asking - how do I get the x,y coordinates of these 2MASS sources in my image? Or do you wish to know what the x,y coordinates of the actual sources in your image? If the latter then you will need some other software like Sextractor or DAOphot to do source-searching and parameterisation in your image. When you load the 2MASS catalogue, SAOimage is able to use the RA and Dec in the catalogue to calculate the x,y positions of the catalog sources in your image (and marks them as green circles). OK, it seems to me that what you have is a fits image (from where?) that has some world coordinate system information attached.
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