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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Cluster page
System
Parameters
Data sources (Number of stars)
UBV
V
B-V
U-B
371
( 9)
1853
( 23)
2038
( 5)
DDO data
C4548
C4245
C4142
117
( 5)
byHalpha
V
b-y
y-Ha
449
( 352)
UBV pg
V
B-V
U-B
52
( 73)