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Position of the targets
CFHTLS Wide : W3 pointing description

- Each image is one CFHTLS-Wide pointing, with 1 deg. x 1 deg.
- Assumed: the camera scientific FOV is 1 deg. x 1 deg., as expected from the optical+megacam design
- Pointings separated by 57' in RA (3' overlap in RA) and 56' in DEC (4' overlap in : larger than in RA to take into account the 62" gaps between CCD rows during the shift sequences for each pointing exposure).
- Areas are referred as W3: (n,m), (n=-3,+3; m=-3,+3) are the RA and DEC offsets respectively, with respect to the W center position adopted by the CFHTLS working group (ie: the (0,0) position in the following table).
The total FOV is 7 deg. in RA and 7 deg. in DEC

CFHTLS: W3 field, 49 pointings
W3: (+3,*) W3: (+2,*) W3: (+1,*) W3: (0,*) W3: (-1,*) W3: (-2,*) W3: (-3,*) -
W3: (*,3) W3: (*,+3)
W3: (*,+2) W3: (*,+2)
W3: (*,+1) W3: (*,+1)
W3: (*,0) W3: (*,0)
W3: (*,-1) W3: (*,-1)
W3: (*,-2) W3: (*,-2)
W3: (*,-3) W3: (*,-3)
W3: (+3,*) W3: (+2,*) W3: (+1,*) W3: (0,*) W3: (-1,*) W3: (-2,*) W3: (-3,*) -


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