NICS - OCLI filters
The K, K', H and Js filters were manufactured by OCLI for the
consortium of astronomers headed by Alan Tokunaga. They are mounted
inside NICS tilted by about 5 degrees. Their transmission was
measured directly inside the instrument by taking a series of spectra
of a halogen lamp without and with the filter inserted
before the AMICI, IJ, JH, JK' and HK dispersers.
No significant (>10-4) out-of-band leak was found within the
0.8-2.6 µm wavelength range.
The resulting transmission curves, measured at a temperature of about 78 K,
are available in the following ASCII files.
For any comments please contact Vania Lorenzi.