Summary of FITS file VI/122/watts.fit:
--- watts.fit ⇩Download⇩ file
ext xtension bpx (dim) x2880 extname
000 main 16 (91x81x1800) 9217b [LongitudeLibration=-9/9(0.2)deg] [LatitudeLibration=-8/8(0.2)deg] [PosAngle=0/359.8(0.2)deg]
001 IMAGE 8 (91x81x1800) 4610b Watts-Qualities [LongitudeLibration=-9/9(0.2)deg] [LatitudeLibration=-8/8(0.2)deg] [PosAngle=0/359.8(0.2)deg]
The header of the FITS file is listed below,
followed by a sample of values (limited to 1000 lines).
|
#--- watts.fit
#ext xtension bpx (dim) x2880 extname
#-------------------------------------------------------------------------------
#000 main 16 (91x81x1800) 9217b [LongitudeLibration=-9/9(0.2)deg] [La
titudeLibration=-8/8(0.2)deg] [PosAngle=0/359.8(0.2)deg]
#-------------------------------------------------------------------------------
SIMPLE = T / true FITS file
BITPIX = 16 / Short integer
NAXIS = 3 / number of dimensions
NAXIS1 = 91 / length of 3rd dimension
NAXIS2 = 81 / length of 2nd dimension
NAXIS3 = 1800 / length of 1st dimension
EXTEND = T / File May Contain Extensions
BSCALE = 0.01 / Binary units are 0.01arcsec
BZERO = 0.0
BUNIT = 'arcsec ' / Physical units of the height of limb
BTYPE = 'HeightOfLimb'
CRVAL1 = -0.0 / Longitude libration [-9.0 +9.0]
CRPIX1 = 46.0 / Reference pix axis#1
CDELT1 = -0.2 / Increment along axis#1
CUNIT1 = 'deg ' / Units of axis#1 are degrees
CTYPE1 = 'LongitudeLibration'
CRVAL2 = 0.0 / Latitude libration [+8.0 -8.0]
CRPIX2 = 41.0 / Reference pix axis#2
CDELT2 = 0.2 / Increment along axis#2
CUNIT2 = 'deg ' / Units of axis#2 are degrees
CTYPE2 = 'LatitudeLibration'
CRVAL3 = 0.0 / Position angle around the Moon
CRPIX3 = 1 / Reference pix axis#3
CDELT3 = 0.2 / Increment along axis#3
CUNIT3 = 'deg ' / Units of axis#3 are degrees
CTYPE3 = 'PosAngle'
DATE = '2006-05-31' / Creation date (CCYY-MM-DD) of FITS header
OBJECT = 'Moon Watt''s charts'
CDS-CAT = 'VI/122' / Catalogue designation in CDS nomenclature
AUTHOR = 'Watts C.B.'
REFERENC= 'Astron. Papers for the Nautical Almanach XVII (1963)'
COMMENT -------------------------------------------------------------------
COMMENT The WATTS' charts provide the elevation of the limb of the moon
COMMENT The contours of the maps were digitised by
COMMENT H.M. Nautical Almanac Office in the late 1960's, and then converted
COMMENT to a grid format by US Naval Observatory in the early 1970's.
COMMENT
COMMENT Note that the Chart corresponding to 36.0 degrees has been
COMMENT reconstructed and has less accuracy than the other zones.
COMMENT Notes provided by D. Herald, of Canberra Australia - May 2006
COMMENT -------------------------------------------------------------------
END
END
#001 IMAGE 8 (91x81x1800) 4610b Watts-Qualities [LongitudeLibration=-
9/9(0.2)deg] [LatitudeLibration=-8/8(0.2)deg] [PosAngle=0/359.8(0.2)deg]
#-------------------------------------------------------------------------------
XTENSION= 'IMAGE ' / FITS image extension
BITPIX = 8 / Values between 0 and 31
NAXIS = 3 / number of dimensions
NAXIS1 = 91 / length of 3rd dimension
NAXIS2 = 81 / length of 2nd dimension
NAXIS3 = 1800 / length of 1st dimension
PCOUNT = 0 / Useless, but required...
GCOUNT = 1 / Useless, but required...
EXTNAME = 'Watts-Qualities' / Quality indicators of the charts
COMMENT Quality values for the Watt's charts
CRVAL1 = 0.0 / Longitude libration [+9.0 -9.0]
CRPIX1 = 46.0 / Reference pix axis#1
CDELT1 = -0.2 / Increment along axis#1
CUNIT1 = 'deg ' / Units of axis#1 are degrees
CTYPE1 = 'LongitudeLibration'
CRVAL2 = 0.0 / Latitude libration [+8.0 -8.0]
CRPIX2 = 41.0 / Reference pix axis#2
CDELT2 = 0.2 / Increment along axis#2
CUNIT2 = 'deg ' / Units of axis#2 are degrees
CTYPE2 = 'LatitudeLibration'
CRVAL3 = 0.0 / Position angle around the Moon [0.0 359.8]
CRPIX3 = 1 / Reference pix axis#3
CDELT3 = 0.2 / Increment along axis#3
CUNIT3 = 'deg ' / Units of axis#1 are degrees
CTYPE3 = 'PosAngle'
OBJECT = 'Qualities Moon Watt''s charts'
CDS-CAT = 'VI/122' / Catalogue designation in CDS nomenclature
AUTHOR = 'Watts C.B.'
REFERENC= 'Astron. Papers for the Nautical Almanach XVII (1963)'
COMMENT -------------------------------------------------------------------
COMMENT Quality code is defined by
COMMENT Q = code*64 + a*8 + b
COMMENT and the value stored indicates the reliability in the ranges:
COMMENT Reliable: 0-127
COMMENT Uncertain: 128-191
COMMENT Unreliable: 192-255
COMMENT Refer to the documentation file 'doc.txt' for details
COMMENT -------------------------------------------------------------------
END
END