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Information for Observers on NIKA2 Bandpasses

Bandpasses of the NIKA2 Arrays

For convenience, we provide here the three bandpasses: nika2-2mm-band.dat, nika2-1mm-1.dat, nika2-1mm-2.dat. These bandpasses have already been corrected for the Rayleigh-Jeans source emission. They are shown in the figure below and also in Figure 1 of Perotto et al. (2020).

Atmospheric transmission curves

The ATM model of J.Pardo & P.Cernicharo was used to calculate the atmospheric transmission at Pico Veleta for three different amounts of precipitable water vapour: 2, 4, 7mm: atmos2mm.dat, atmos4mm.dat, atmos7mm.dat.

Figures

nika2-bandpasses3.png atmos-transmission2.png

Previous bandpasses of 2015

The spectral bands as measured in NĂ©el (note that the two 1.15mm arrays are pretty similar but there is a detectable difference):

xavier_v1.jpg

xavier_v2.jpg