Table 1: WFCAM filter specifications at operating temperature.

Filter	50%	50%	Average	Typical
	cut-on	cut-off	transmission	sky/Tel
				background
	m	m		elec/s/pixel
Z	0.83	0.925	0.94	50
Y	0.97	1.07	0.80	80
J	1.17	1.33	0.82	300
H	1.49	1.78	0.86	2300
K	2.03	2.37	0.78	2500
S1	2.111	2.132	0.79	100
Br	2.155	2.177	0.85	180

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