UIST has two 24-slot filter wheels which contain filters for both imaging and for blocking the spectroscopy grisms. The MKO consortium filter set is installed where possible (see the discussion of new JHK standards for example). We list the imaging filters in the table below, the actual population of the filter wheels is also available. Click on the filter name to see an image of the profile; text files are also available giving transmission profiles for some of the filters, contact Watson P. Varricatt. The 3.6nbL’ filter appears to have some surface damage and produces trailed images at a low level. 

Filter	50% Cut on, micron	50% Cut off, micron	Peak Transmission, %
Y[MK]	0.966	1.078	94.12
Z[MK]	1.008	1.058	60
J[MK]	1.17	1.33	91
H[MK]	1.49	1.78	90
K[MK]	2.03	2.37	97
L'[MK]	3.248	4.108	92
M'[MK]	4.572	4.800	84
1.57(cont)[MK]	1.561	1.583	70
CH4_s	1.550	1.657	84
FeII[MK]	1.630	1.656	73
CH4_I	1.617	1.730	90
2.122(S1)	2.106	2.124	60
2.122 MK	2.103	2.134	85
BrG MK	2.150	2.182	69
2.248(S1)	2.234	2.269	66
2.248 MK	2.235	2.270	57
2.7cont[98]	2.257	2.291	66
2.42CO	2.413	2.436	66
K_s_MK	1.990	2.310	95.4
Klong	2.019	2.434	~95
3.05ice MK	2.970	3.125	74
3.28″Dust”	3.250	3.305	48
3.29 PAH MK	3.264	3.318	70
3.4nbL	3.379	3.451	85
3.5mbL	3.383	3.594	82
3.6nbL’	3.560	3.625	73
3.99(cont)	3.964	4.016	80
BrA	4.025	4.080	85