Notes on the FITS formats in this directory.

These files represent a variety of formats for testing FITS readers against. 
While far from an exhaustive compendium of common formats, it does represent a 
useful cross-section of data formats commonly provided through data services at 
IPAC, HST, ESO, NRAO, INT, DSS etc.


N44_Halpha.fits
From WFI at La Silla.



UVES.2003-05-01T12%3A01%3A23.991.fits
From UVES at VLT, Paranal.



EMMI.2004-03-17T07%3A06%3A44.812.fits
From Emmi at NTT, La Silla.



Ha_int.fits     
From Isaac Newton Telescope on La Palma. 
Ha_log_shallow.gif contains an 8-bit ‘snapshot’.



j8dt07011_drz.fits   
HST/ACS/HRC image.
hrc_250w.gif contains an 8-bit ‘snapshot’.



u2mh0108b.c0.fits
HST/WFPC2 image. NAXIS=4 I believe.
439wmoslin.gif contains an 8-bit ‘snapshot’ of the aligned mosaic’ed distortion 
corrected content of the four planes/chips.


dss2_40_blue.fits
Digitized Sky Survey image.
dss2_blue_log1.gif  contains an 8-bit ‘snapshot’.



2mass-montage.fits
64 bit float, galactic coordinates, minimal header



2mass.fits
Standard quicklook image, 16 bit integer, long header



iras-issa.fits
Standard IRAS plate, 16 bit integer (uses BSCALE/BZERO), NAXIS=3, but 3rd axis 
is 1D, used to encode wavelength of image



msx.fits
Standard MSX plate, 32 bit float, NAXIS=3, but 3rd axis is 1D, used to encode 
wavelength of image



nrao12m-cube.fits
16 bit integer (uses BSCALE/BZERO), image cube with 39 planes, NAXIS=4, but 4th 
axis used only to encode stokes parameter


nrao12m-gildas.fits
16 bit integer (uses BSCALE/BZERO), non-standard projection type, NAXIS=3, but 
3rd axis is undefined/unused



spitzer-irac.fits
Standard spitzer IRAC calibrated data, 32 bit float



spitzer-mips70.fits
Standard spitzer IRAC calibrated data, 32 bit float



vla-21cm.fits
16 bit integer (uses BSCALE/BZERO), NAXIS=4, but axes 3 & 4 are used for 
velocity and stokes (just a 2d image), VERY long header