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Hi, I've got a multi-extension fits file; I want to extract all the header information from the primary extension and combine it with the data in the next extension, i.e. the primary extension header has all the interesting information. To get the header, I can use fxheader or imheader, but I don't know how to set the next extension header "in bulk". Can anyone help?

It sounds like you're describing what the FITS kernel 'inherit' mechanism does, i.e. it inherits keywords from the PHU when looking at extensions. This is off by default but you can enable it by adding the 'inherit' flag to the extension number, for example

cl\$this->_split2($m[0]) imhead foo.fits[1,inherit] long+

will merge the PHU and EHU headers into a single output. Let me know if I missed the point of your question.

Hi Fitz,

Yes almost. What I'm doing is:


My problem then comes when I try to get the first extension data and insert it as the primary section data, e.g.

this doesn't work, I get the same as file foo.fits, i.e. I get a dummy primary data and my "real" data is in extension 1, with useless header data.

What I really need is to get a file with structure
PHU | PDATA | HDR1 | DATA1
and get a file with structure
PHU | DATA1