The tables below list which filters are available to observers each night.
Order Sorting Filters | |||||
---|---|---|---|---|---|
Name | Trans Curve Click on a thumbnail to enlarge Click again to shrink down |
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 Click on a thumbnail to enlarge Click again to shrink down |
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.