Nominal LSST passbands:
Canon 5D bayer bands, with NIR block installed:
with NIR filter removed:
But note we are likely to use a broader y band, filling in the water notice at 940 nm.
The fisheye lenses have a provision for a film filter to be inserted. Kodak Wratten filters are typically used for this purpose. Edmund optics sells them from stock, with response curves of:
| band | closest corresponding Wratten filter plus Canon |
|---|---|
| u | none (optics in lens won't work anyway) |
| g | native B+G, with IR blocker installed |
| r | Wratten 12, G+R. Or just Canon native R? |
| i | ? |
| z | Wratten 87 with full-response B+G+R, NIR block removed |
| y | ? |