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 2D image change units
   
sscibell
 10/12/2015 10:38PM (Read 656 times)  
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Registered: 09/02/2015
Posts: 10
Hello,

Is there a task in iraf that can convert units of a 2D image? For example, from deg vs. wavelength to arcsec vs. velocity?

Thanks!
SS

 
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fitz
 10/21/2015 04:01PM  
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Registered: 09/30/2005
Posts: 4040
There's no specific task I know of to do this. The units are defined by the image WCS so you could edit the values using tasks like HEDIT to convert them manually or from a script, however this assumes you won't need to also remap the pixels in some way. Have a look at the SPECWCS help page for additional information on spectral WCS headers as well.

 
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