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== NIKA2 Bandpasses == == Information for Observers on NIKA2 Bandpasses ==
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=== Information for Observers === === Bandpasses of the NIKA2 Arrays ===
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=== Atmospheric transmission curves ===
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=== Bandpasses of 2015 === 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: [[attachment:atmos2mm.dat]], [[attachment:atmos4mm.dat]], [[attachment:atmos7mm.dat]].

{{attachment:atmos-transmission.png}}

=== Previous bandpasses of 2015 ===

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Information for Observers on NIKA2 Bandpasses

Bandpasses of the NIKA2 Arrays

NIKA2 bandpasses of the 3 arrays are described in Section 2.5 and Figure 1 of Perotto et al. (2020). For convenience, we provide here a fits file Transmission_2017_Jan_NIKA2_v1.fits (priv. com. Juan-Macias Perez 12-Jun-2020). The 2mm bandpass is valid since September 2016 (Run N2R5). The following figure shows a resulting plot:

nika2_bands.png

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.

atmos-transmission.png

Previous bandpasses of 2015

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

xavier_v1.jpg

xavier_v2.jpg

Spectral bands (last edited 2020-06-15 12:16:37 by CarstenKramer)