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| AnTaR3s |
04/10/2010 10:51AM (Read 1551 times)
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Status: offline
Registered: 10/24/2009
Posts: 58
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HiI've got a simple question, just to understand what IRAF does:Consider this:
I've got images with a resolution of 1536x1024 an 16bit. This makes a 3MB file for each image and this is also what I get.
But when I process the images with IRAF (ccdproc, etc.) the resulting images have 6MB at the same resolution. Is IRAF stretching the data producing 32bit images, or happens something else?cheers
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| fitz |
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04/10/2010 10:51AM
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Status: offline
Registered: 09/30/2005
Posts: 4040
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Some types of processing produce floating-point output, taking your 16-bit int data to 32-bit floating-point. You can use IMHEAD to verify the larger image is now real.
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| AnTaR3s |
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04/10/2010 10:51AM
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Status: offline
Registered: 10/24/2009
Posts: 58
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Had something like that in mind, thanks! 
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16bit images -> 6MB?
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