Benn_LaPalma_sky_converted

The full file can be found in the Simulation Model repository here.

The first 30 lines of the file are:

# Nightsky spectrum from Benn & Ellison (astro-ph/9909153 actually), in original units and converted
# to photons per wavelength interval, time, area, and solid angle.
#
# Conversion factor from column two [microJy/(arcsec)^2] to column 3 [10^9 ph. / (nm s m^2 sr)] is
# 1e-6*1e-23*1e-7*1e4/(lambda*1e-9/6.6260696e-34)*(pi/180./3600.)**(-2)/1e9/1e9 = 642.09/lambda
# [micro][Jy->erg][erg->J][cm**-2->m**-2][1/(h*nu)/(d lambda/d nu)][arcsec**-2->sr**-1][1/m->1/nm][1/s->1/ns]
# where lambda is the value in column one [nm] and (h*nu)*(d lambda/d nu) = h * lambda, using
# h = 6.6260696e-34 J*s,
# 1 Jy = 10^-23 erg s^-1 cm^-2 Hz^-1,
# 1 microJy = 1e-6 * 1e-23 erg / s / cm^2 / Hz = 1e-6 * 1e-23 * 1e-7 J / s * 1e4 / m^2 / Hz = 1e-32 J / (s m^2 Hz).
#
# See also notes at the end of this file for further units and other sources of NSB.
#
# Lambda     fnu (original)     diff. photon rate
#  [nm ]   [microJy/(arcsec)^2] [10^9 / (nm s m^2 sr)]
300.00		0.000000	0          # Extrapolation, zero transparency in ozone layer
315.00		0.300000	0.612      # Extrapolation
330.00		1.000000	1.95       # Extrapolation
350.16		1.824212	3.34512
350.60		1.658375	3.03722
351.26		1.160862	2.12209
351.69		2.155887	3.93612
352.13		2.653400	4.83844
353.22		2.155887	3.91907
353.66		3.814262	6.92517
354.10		4.477612	8.11951
354.54		3.814262	6.90809
354.75		2.653400	4.80267
355.19		2.487562	4.49696
355.63		2.985075	5.38972