The tables below list which filters are available to observers each night.

Order Sorting Filters
Name Trans Curve
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λC
(μm)
FWHM
(μm)
Notes
Manufacturer
Y ASCII 1.048 0.152
J ASCII 1.253 0.200 J2 can access a region
that J does not cover.
H ASCII 1.637 0.341
K ASCII 2.162 0.483 Not intended for imaging
Ks ASCII 2.147 0.314
Intermediate Band Filters
Name Trans Curve
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λC
(μm)
FWHM
(μm)
Manufacturer
J2 ASCII 1.181 0.129
J3 ASCII 1.288 0.122
H1 ASCII 1.556 0.165
H2 ASCII 1.709 0.167

Image showing the broadband filter curves.


Image showing the transmission curves of the J2,J3,H1, & H2 filters relative to the order sorting filters.