74
Sidereal Explorations
Figure 12a. Class A stars, in
the Taurus region, of
magnitudes 9.1 to 10.0.
Crosses indicate stars in
the Henry Draper Cata-
logue; dots indicate stars
in the Henry Draper Ex-
tension.
Figure 12b. Class A stars, in
the Taurus region, of
magnitudes 11.1 and
fainter, in the Henry
Draper Extension. Crosses
indicate stars from 11.1
to 11.5; dots indicate
stars fainter than 11.5.