IRAF imalign will not shift images, incorrectly reports unequal number of input and output images, why?











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I recently started working in IRAF as I have the need for image data reduction.
I tried to stack .fit images using imalign function, but I get this error message:



enter image description here



This was a test, so I have only 4 images in input and output lists, and I have 4 shifts in shiftlist.txt. These are my files - input list:



NGC7286-0001_B.fit

NGC7286-0003_B.fit

NGC7286-0004_B.fit

NGC7286-0005_B.fit


Output list:



sh-NGC7286-0001_B.fit

sh-NGC7286-0003_B.fit

sh-NGC7286-0004_B.fit

sh-NGC7286-0005_B.fit


Shiftlist:



0.0 0.0

3.751 4.55

3.997 9.273

3.107 15.243


List of coordinates of referent stars:



618.58 666.96

1136.19 711.39

1288.88 942.79

1417.72 927.84

1004.71 1517.73

1053.39 1756.91

532.16 1794.60


Why do I get this error message? Do you see anything wrong with my files?
If I use shiftlist I calculated, do I need to change bigbox (20) and/or boxsize (7)? Thank you in advance.






astronomy fits







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    up vote
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    down vote

    favorite












    I recently started working in IRAF as I have the need for image data reduction.
    I tried to stack .fit images using imalign function, but I get this error message:



    enter image description here



    This was a test, so I have only 4 images in input and output lists, and I have 4 shifts in shiftlist.txt. These are my files - input list:



    NGC7286-0001_B.fit
    
NGC7286-0003_B.fit
    
NGC7286-0004_B.fit
    
NGC7286-0005_B.fit


    Output list:



    sh-NGC7286-0001_B.fit
    
sh-NGC7286-0003_B.fit
    
sh-NGC7286-0004_B.fit
    
sh-NGC7286-0005_B.fit


    Shiftlist:



    0.0 0.0
    
3.751 4.55
    
3.997 9.273
    
3.107 15.243


    List of coordinates of referent stars:



    618.58 666.96
    
1136.19 711.39
    
1288.88 942.79
    
1417.72 927.84
    
1004.71 1517.73
    
1053.39 1756.91
    
532.16 1794.60


    Why do I get this error message? Do you see anything wrong with my files?
    If I use shiftlist I calculated, do I need to change bigbox (20) and/or boxsize (7)? Thank you in advance.






    astronomy fits







    share|improve this question
























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I recently started working in IRAF as I have the need for image data reduction.
      I tried to stack .fit images using imalign function, but I get this error message:



      enter image description here



      This was a test, so I have only 4 images in input and output lists, and I have 4 shifts in shiftlist.txt. These are my files - input list:



      NGC7286-0001_B.fit
      
NGC7286-0003_B.fit
      
NGC7286-0004_B.fit
      
NGC7286-0005_B.fit


      Output list:



      sh-NGC7286-0001_B.fit
      
sh-NGC7286-0003_B.fit
      
sh-NGC7286-0004_B.fit
      
sh-NGC7286-0005_B.fit


      Shiftlist:



      0.0 0.0
      
3.751 4.55
      
3.997 9.273
      
3.107 15.243


      List of coordinates of referent stars:



      618.58 666.96
      
1136.19 711.39
      
1288.88 942.79
      
1417.72 927.84
      
1004.71 1517.73
      
1053.39 1756.91
      
532.16 1794.60


      Why do I get this error message? Do you see anything wrong with my files?
      If I use shiftlist I calculated, do I need to change bigbox (20) and/or boxsize (7)? Thank you in advance.






      astronomy fits







      share|improve this question













      I recently started working in IRAF as I have the need for image data reduction.
      I tried to stack .fit images using imalign function, but I get this error message:



      enter image description here



      This was a test, so I have only 4 images in input and output lists, and I have 4 shifts in shiftlist.txt. These are my files - input list:



      NGC7286-0001_B.fit
      
NGC7286-0003_B.fit
      
NGC7286-0004_B.fit
      
NGC7286-0005_B.fit


      Output list:



      sh-NGC7286-0001_B.fit
      
sh-NGC7286-0003_B.fit
      
sh-NGC7286-0004_B.fit
      
sh-NGC7286-0005_B.fit


      Shiftlist:



      0.0 0.0
      
3.751 4.55
      
3.997 9.273
      
3.107 15.243


      List of coordinates of referent stars:



      618.58 666.96
      
1136.19 711.39
      
1288.88 942.79
      
1417.72 927.84
      
1004.71 1517.73
      
1053.39 1756.91
      
532.16 1794.60


      Why do I get this error message? Do you see anything wrong with my files?
      If I use shiftlist I calculated, do I need to change bigbox (20) and/or boxsize (7)? Thank you in advance.






      astronomy fits




      astronomy fits






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      asked 2 days ago









      elizevin

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          Found the solution, though I don't know why my IRAF have that problem.
          I can't have "_" character in the names of my images.
          Strange, but now aligning works I guess.






          share|improve this answer





















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            up vote
            0
            down vote













            Found the solution, though I don't know why my IRAF have that problem.
            I can't have "_" character in the names of my images.
            Strange, but now aligning works I guess.






            share|improve this answer

























              up vote
              0
              down vote













              Found the solution, though I don't know why my IRAF have that problem.
              I can't have "_" character in the names of my images.
              Strange, but now aligning works I guess.






              share|improve this answer























                up vote
                0
                down vote










                up vote
                0
                down vote









                Found the solution, though I don't know why my IRAF have that problem.
                I can't have "_" character in the names of my images.
                Strange, but now aligning works I guess.






                share|improve this answer












                Found the solution, though I don't know why my IRAF have that problem.
                I can't have "_" character in the names of my images.
                Strange, but now aligning works I guess.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered yesterday









                elizevin

                204




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