That was the case for my files and I was reading those two variables in and treating them as if they were my width and height in the perl script along side the width and height from my old canon raw files. Converting those simplifies my logic, so I’m all for it. Don’t know if other user might have a different view.
This line is what I’m unsure of in the definition:
Flexible Image Transport System (FITS) is an open standard[3] defining a digital file format useful for storage, transmission and processing of data: formatted as N-dimensional arrays (for example a 2D image), or tables.
Is it just that 2d images work out to use those as width and height? Or maybe you add those two values as width and height but also allow them to read out with their original names so people with more than 2d can read them however it makes sense in their use?