Correction for colours using stellar colour-colour diagram
We have developed a method to correct colours (or relative magnitudes between filters) for INT/WFC photometry. See
here
for how this is performed.
WFC exposures used to obtain colours [
html table
]
Analysis of the colours
shifts of the colours in the data w.r.t. the ELAIS stellar colours
list of fields sorted by RA [
html
] [
ascii
] [
old html
] [
old ascii
]
list of fields sorted by minimum shifts [
html
] [
ascii
]
fields for photometric re-calibration in Jan'04 run [
html
] [
ascii
]
plots of shifts of the colours
all available data [
r-i v. g-r
] [
r-i x. i-z
] [
g-r v. U-g
]
images with ERRZPT<0.03 only [
r-i v. g-r
] [
r-i x. i-z
] [
g-r v. U-g
]
histogram of shifts of the colours
|shift| <0.3: [
histogram
] [
cumulative
] full range: [
histogram
] [
cumulative
] single plot g-r: [
cumulative
]
images with ERRZPT<0.03 only [
|shift| <0.3
]
minimum (absolute) shift among the four colours (Galactic plane fields excluded) [
differential
] [
cumulative
]
histogram
of statistical colour errors due to CASU pipeline zero point errors
histogram of the ratio of colour shifts to zero point errors [
full range
]
histogram of RA [
fields with minimun shift >=0.05
] [
rest fields
]
How the colour correction is done
Last modified: Mon Aug 2 11:11:10 2004