NICS - Barr Filters
"J" is the "standard" filter manufactured by Barr.
It is mounted inside NICS tilted by about 3 degrees. Its 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 and JH 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,
is available in the following ASCII file.
For any comments please contact Vania Lorenzi.