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Re: read FITS header keyword using IDL Astronomy users's library [message #73344 is a reply to message #73210]

Tue, 02 November 2010 07:57

Jeremy Bailin
Messages: 618
Registered: April 2008

Senior Member

On Nov 1, 1:08 pm, polystethylene <polystethyl...@hotmail.com> wrote:
> On Nov 1, 4:47 pm, Truong Le <truong...@gmail.com> wrote:
>
>> All,
>
>> Does anyone know if one can use the IDL astronomy users's library to
>> obtain just the header
>> keyword (in other word, I want to check if a header keyword exist in
>> the FITS file)?
>
>> I checked the library but could really see any procedure that actually
>> does what I really wanted.
>
>> Thanks
>
> SXPAR will do this for you...
>
> i.e...
>
> fits = READFITS('data',header)
> result = SXPAR(header,'keyword',COUNT=A)
>
> I think if you then do
>
> print,COUNT
>
> and zero is returned, the keyword isn't present...

Also note that if you only want to read in the header and not the rest
of the file, you can use HEADFITS instead of READFITS.

-Jeremy.

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[Message index]

		read FITS header keyword using IDL Astronomy users's library By: Truong Le on Mon, 01 November 2010 09:47
		Re: read FITS header keyword using IDL Astronomy users's library By: Jeremy Bailin on Tue, 02 November 2010 07:57
		Re: read FITS header keyword using IDL Astronomy users's library By: wlandsman on Mon, 01 November 2010 10:26
		Re: read FITS header keyword using IDL Astronomy users's library By: Truong Le on Mon, 01 November 2010 10:26
		Re: read FITS header keyword using IDL Astronomy users's library By: polystethylene on Mon, 01 November 2010 10:08

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