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
90
( 101)
435
( 14)
uvby
V
b-y
m1
c1
405
( 63)
420
( 10)
uvby mean
V
b-y
m1
c1
ß data
Hbeta
405
( 16)
420
( 8)
ß mean
Hbeta
Eggen uvby
V
b-y
M1
C1
39
( 17)
Geneva
V
U-B
B-V
U-B1
B2-V1
d
delta
m2
g
DDO data
C4548
C4245
C4142
59
( 14)
Washington
T1
C-M
M-T1
T1-T2
M51
10
( 13)
VRIe data
V
V-R
R-I
64
( 13)
UBV CCD
V
B-V
U-B
11
( 114)
32
( 165)
uvby CCD
V
b-y
m1
c1
7
( 135)
232
( 386)
252
(15822)
ß CCD
Hbeta
232
( 344)
VIc CCD
V
V-I
170
( 178)
UBV pg
V
B-V
U-B
141
( 264)
159
( 275)