... Up: Data Analysis Applications . ... Our main goals are: 1) to take advantage of the full capabilities of the AXAF, we intend to provide a more sophisticated modeling capability (i.e., models that are f ( x , y , E , t ), models to simulate the response of AXAF instruments, and models that enable ``joint-mode'' fitting, i.e., combined spatial-spectral or spectral-temporal fitting); and 2) to provide users with a wide variety of models, optimization methods, and fit statistics. ... Multiple data sets...

... Fitting and Modeling of AXAF Data with the ASC Fitting Application S. Doe, M. Ljungberg, A. Siemiginowska and W. Joye AXAF Science Center, MS 81, Smithsonian Astrophysical Observatory, 60 Garden Street, Cambridge, MA 02138 USA Abstract. ... Fitting and Modeling of AXAF Data 159 MODEL MANAGER FIT STATISTIC MANAGER MANAGER SRC BKGD INSTR MODEL = SRC + BKGD * INSTR MODELS MODELS MODELS MANAGER MANAGER STATS METHODS OPTIMIZATION METHOD MANAGER Figure 3. The Model, Method, and Statistic Managers. ...

... Noise is added to # the image and statistical error and data quality files are also # formed. ... rm test1t*.tab # # Get 128x128, 256x256 and 256x64 images and set to zero # imcopy dev$pix[1:128,1:128] testbas.fits imarith operand1= testbas.fits op= * operand2=0 ... operand1= testbas.fits op= * operand2=0.0 result= test256.fits # # Form a noiseless Gaussian star image of FWHM 4.0 pixels # print print Creating three identical stellar Gaussian images (FWHM=4pix) ...