To make a plot
Select one or two photometric systems,
Select one or two parameters,
Select one or two data sources,
Click on "Plot".
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System
Parameters
Data sources (Number of stars)
UBV
V
B-V
U-B
322
( 165)
Geneva
V
U-B
B-V
U-B1
B2-V1
d
delta
m2
g
Washington
T1
C-M
M-T1
T1-T2
M51
18
( 5)
UBV CCD
V
B-V
U-B
42
( 111)
VIc CCD
V
V-I
42
( 111)
da CCD
V
a
g1-y
Da
32
( 50)
UBV pg
V
B-V
U-B
125
( 114)