Fluxes from a Zero mag Source and Conversion of Magnitudes to Janskys and F-Lambda

The tables below give bandpass, effective or isophotal wavelength or frequency for the bandpass (see this discussion for important notes on definitions), flux in Wm^-2 µm^-1 and Jansky, and AB mags, for a zero magnitude source. One Jansky represents an incident energy flux density of 10^-26 W m^-2 Hz^-1. The two datasets below were calculated in slightly different ways, but the results agree within 2%.

WFCAM ZY and Mauna Kea Filter Bandpasses

Tokunaga & Vacca 2005 PASP and priv. comm.						P. Hewett priv. comm.
Band	Isophotal Wavelenth (µm)	Flux (Wm-2µm-1)	Isophotal Frequency (Hz)	S (Jy)	AB mag	Effective Wavelength (µm)	Flux (Wm-2 µm-1)	S (Jy)	AB mag
V	0.5450	3.58E-08	5.490E+14	3630	0.026
Z	0.9206	8.74e-09	3.071E+14	2270	0.535	0.8817	8.59E-09	2232	0.528
Y	1.036	5.81e-09	2.870E+14	2060	0.640	1.0305	5.71E-09	2026	0.634
J	1.250	3.01e-09	2.394E+14	1560	0.941	1.2483	2.94E-09	1530	0.938
H	1.644	1.18e-09	1.802E+14	1040	1.38	1.6313	1.14E-09	1019	1.379
K’	2.121	4.57e-10	1.413E+14	686	1.84
Ks	2.149	4.35e-10	1.395E+14	670	1.86
K	2.198	4.00e-10	1.364E+14	645	1.90	2.2010	3.89E-10	630	1.900
L’	3.754	5.31e-11	7.982E+13	249	2.93
M’	4.702	2.22e-11	6.350E+13	163	3.40

Older Filter Bandpasses
Beckwith et al. (1976, ApJ, 208, 390), with modifications at
10 and 20 microns to be consistent with Tokunaga (1984, AJ, 89, 172)

Band (µm)	S (Jy)	Flux (Wm-2 µm-1)
V (0.5556)	3540	3.44e-08
I (0.9)	2250	8.25e-09
J (1.25)	1600	3.07e-09
H (1.65)	1020	1.12e-09
K (2.20)	657	4.07e-10
L (3.45)	290	7.30e-11
L'(3.80)	252	5.24e-11
M (4.80)	163	2.12e-11
(7.8)	65.3	3.22e-12
(8.7)	53.0	2.10e-12
(9.8)	42.3	1.32e-12
N (10.1)	39.8	1.17e-12
(10.3)	38.5	1.09e-12
(11.6)	30.5	6.81e-13
(12.5)	26.4	5.07e-13
Q (20.0)	10.4	7.80e-14