Posted by
Sergei Goshko on
Jun 01, 2009; 7:02am
URL: http://imagej.273.s1.nabble.com/cannot-open-FITS-image-with-extended-header-tp3692336.html
Hi,
I cannot open FITS file downloaded from HLA (i.e.
http://archive.stsci.edu/cgi-bin/hla/getdata.cgi?download=1&dataset=hlsp_coma_hst_acs-wfc_v19_f814w&filename=hlsp_coma_hst_acs-wfc_v19_f814w_v1_ivm-drz-cl.fits )
The file has extended FITS header and I believe it confuses ImageJ.
The message I get is "This does not appear to be a FITS file."
The image can be opened with no problem by SAO DS9 viewer. SAO shows both headers.
I just downloaded latest release of ImageJ 1.41 and the problem is still there.
Is there any work around?
Thank you.
Sergei
The header of the image above looks like:
SIMPLE = T / Fits standard
BITPIX = 16 / Bits per pixel
NAXIS = 0 / Number of axes
EXTEND = T / File may contain extensions
ORIGIN = 'NOAO-IRAF FITS Image Kernel July 2003' / FITS file originator
IRAF-TLM= '10:58:58 (24/07/2007)' / Time of last modification
NEXTEND = 3 / Number of standard extensions
DATE = '2007-02-19T22:26:34' / date this file was written (yyyy-mm-dd)
.............
END
XTENSION= 'IMAGE ' / Image extension
BITPIX = -32 / Bits per pixel
NAXIS = 2 / Number of axes
NAXIS1 = 4225 / Axis length
NAXIS2 = 4300 / Axis length
PCOUNT = 0 / No 'random' parameters
GCOUNT = 1 / Only one group
ORIGIN = 'NOAO-IRAF FITS Image Kernel July 2003' / FITS file originator
EXTNAME = 'SCI ' / Extension name
EXTVER = 1 / Extension version
DATE = '2007-02-19T22:26:35' / Date FITS file was generated
IRAF-TLM= '11:00:08 (24/07/2007)' / Time of last modification
INHERIT = T / inherit the primary header
EXPNAME = 'j9ty19xyq ' / exposure identifier
BUNIT = 'ELECTRONS' / brightness units
....................
END
<binary data>