"# Known units, taken from Pence et al, the OGIP specification, and the CDS specification",,,,,
"# In the FITS/OGIP/CDS columns, a 1 indicates that the unit is permitted,",,,,,
"# s indicates that SI prefixes are allowed,",,,,,
"# b that IEC binary prefixes are allowed,",,,,,,
# d that the unit is deprecated in some way.,,,,,
# and p that the symbol is the preferred one in this syntax (where there is more than one symbol that maps to this unit),,,,,
# The CDS standard doesn’t indicate which units may or may not take SI prefixes:,,,,,
"# in the table below, we generally follow the FITS prescription, except where the CDS specification suggests otherwise.",,,,,
# Where there are two possible abbreviations for a unit in a syntax,,,,,
"# (eg FITS allows ‘pixel’ and ‘pix’), we prefer the one marked with a 'p'",,,,,
# unit,meaning,FITS,OGIP,CDS,VOUnits
# This is a bloody weird unit....,,,,,
#Sun,relative to sun,1,,1,1s
%,qudt:Percent,,,1,
A,qudt:Ampere,1s,1s,1s,1s
a,unity:JulianYear,1s,,1s,1s
adu,unity:ADU,1,,,1s
Angstrom,qudt:Angstrom,1d,,1,1dp
angstrom,qudt:Angstrom,,1,,1d
arcmin,qudt:ArcMinute,1,1,1,1s
arcsec,qudt:ArcSecond,1,1,1s,1s
AU,qudt:AstronomicalUnit,1,1,1,1p
au,qudt:AstronomicalUnit,,,,1
Ba,unity:BesselianYear,1d,,,1d
barn,qudt:Barn,1sd,1,1s,1sd
beam,unity:Beam,1,,,1s
bin,unity:DistributionBin,1,1,,1s
bit,qudt:Bit,1s,,1s,1sb
byte,qudt:Byte,1s,1,1s,1sbp
# Note that 'B' is byte rather than bel; cf ISO/IEC-80000-13 item 13-9c
B,qudt:Byte,,,,1sb
C,qudt:Coulomb,1s,1s,1s,1s
cd,qudt:Candela,1s,1s,1s,1s
chan,unity:DetectorChannel,1,1,,1s
count,qudt:Number,1,1,,1sp
Crab,unity:Crab,,1s,,
ct,qudt:Number,1,,1,1s
cy,unity:JulianCentury,1,,,
d,qudt:Day,1,1,1,1s
# Decibel is anomalous in that we regard it as a unit by itself, rather than 10^-1 Bel.
dB,qudt:Decibel,,,,1
D,qudt:Debye,1,,1,1s
deg,qudt:DegreeAngle,1,1,1,1s
erg,qudt:Erg,1d,1,,1sd
eV,qudt:ElectronVolt,1s,1s,1s,1s
F,qudt:Farad,1s,1s,1s,1s
g,qudt:Gram,1s,1s,1s,1s
G,qudt:Gauss,1sd,1,,1sd
H,qudt:Henry,1s,1s,1s,1s
h,qudt:Hour,1,1,1,1s
Hz,qudt:Hertz,1s,1s,1s,1s
J,qudt:Joule,1s,1s,1s,1s
Jy,unity:Jansky,1s,1s,1s,1s
K,qudt:Kelvin,1s,1s,1s,1s
lm,qudt:Lumen,1s,1s,1s,1s
lx,qudt:Lux,1s,1s,1s,1s
lyr,qudt:LightYear,1,1,,1s
m,qudt:Meter,1s,1s,1s,1s
mag,unity:StellarMagnitude,1s,1,1s,1s
mas,unity:MilliArcSecond,1,,1,1
min,qudt:MinuteTime,1,1,1,1s
mol,qudt:Mole,1s,1s,1s,1s
N,qudt:Newton,1s,1s,1s,1s
Ohm,qudt:Ohm,1s,,1s,1s
ohm,qudt:Ohm,,1s,,
Pa,qudt:Pascal,1s,1s,1s,1s
pc,qudt:Parsec,1s,1s,1s,1s
ph,unity:Photon,1,,,1s
photon,unity:Photon,1p,1,,1sp
pix,unity:Pixel,1,,1,1s
pixel,unity:Pixel,1p,1,,1sp
R,unity:Rayleigh,1s,,,1s
rad,qudt:Radian,1s,1s,1s,1s
Ry,unity:Rydberg,1,,1s,1s
s,qudt:SecondTime,1s,1s,1s,1s
S,qudt:Siemens,1s,1s,1s,1s
solLum,unity:SolarLuminosity,1,,1,1s
solMass,unity:SolarMass,1,,1,1s
solRad,unity:SolarRadius,1,,1,1s
sr,qudt:Steradian,1s,1s,1s,1s
T,qudt:Tesla,1s,1s,1s,1s
ta,qudt:YearTropical,1d,,,1d
u,qudt:UnifiedAtomicMassUnit,1,,,1s
V,qudt:Volt,1s,1s,1s,1s
voxel,unity:Voxel,1,1,,1s
W,qudt:Watt,1s,1s,1s,1s
Wb,qudt:Weber,1s,1s,1s,1s
yr,unity:JulianYear,1sp,1,1sp,1sp
