Documentation [PDF] - Canada France Hawaii Telescope ...

D2 u−band (25% best−seeing images)
D2 u−band (85% best−seeing images)
3.0
ul ur ul ur
3.0
Dec [deg]
2.5
2.0
cc
Dec [deg]
2.5
2.0
cc
1.5
ll
lr
1.5
ll
lr
N
151.0
150.5
150.0
149.5
149.0
151.0
150.5
150.0
149.5
149.0
RA [deg]
RA [deg]
E
Figure 46: Locations of u ∗ -band pointings used to produced the D2-u ∗ stack. The colored squares represent the
different MegaCam fields, and the colored points are the center positions of each CFHTLS and COSMOS images
that are combined to produce the D-25-u ∗ and D-85u ∗ images. The dark squares are located at the D2 center
position and outline the contour of the final D2-u ∗ . The D2-u ∗ characteristics quoted in Tables 18 and 19 only
refer to the central regions delimited by the black squares. The bold squares show the central region containing
all exposures. The stacks inside this narrow region are extremely deep: 51012 s. for D2-u ∗ -25, and 142970 s. for
D2-u ∗ -85.
82