The near-infrared airglow continuum conundrum - Constraints for ground-based faint object spectroscopy

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Table 3

Apparent observed and inferred zenith equivalent airglow continuum radiance.

Band	ID	Total continuum apparent observed		Zodiacal light Kelsall et al. (1998)		Airglow continuum zenith, emitted		Airglow continuum zenith, emitted + scattered
Å	N^o	ph s⁻¹m⁻²μm⁻¹ arcsec⁻²	mag arcsec⁻²	ph s⁻¹m⁻²μm⁻¹ arcsec⁻²	mag arcsec⁻²	ph s⁻¹m⁻²μm⁻¹ arcsec⁻²	mag arcsec⁻²	ph s⁻¹m⁻²μm⁻¹ arcsec⁻²	mag arcsec⁻²
6720	3	271 ±99	${21.20}_{- 0.34}^{+ 0.49}$ $\[21.20_{-0.34}^{+0.49}\]$	59	22.85	53 ±19	${22.97}_{- 0.33}^{+ 0.48}$ $\[22.97_{-0.33}^{+0.48}\]$	73 ±27	${22.62}_{- 0.34}^{+ 0.50}$ $\[22.62_{-0.34}^{+0.50}\]$
6720	5	255 ±75	${21.26}_{- 0.28}^{+ 0.38}$ $\[21.26_{-0.28}^{+0.38}\]$	59	22.85	48 ±14	${23.08}_{- 0.28}^{+ 0.37}$ $\[23.08_{-0.28}^{+0.37}\]$	67 ±20	${22.71}_{- 0.28}^{+ 0.38}$ $\[22.71_{-0.28}^{+0.38}\]$
6720	12	525 ±32	${20.48}_{- 0.06}^{+ 0.07}$ $\[20.48_{-0.06}^{+0.07}\]$	64	22.76	78 ±5	${22.55}_{- 0.07}^{+ 0.07}$ $\[22.55_{-0.07}^{+0.07}\]$	107 ±7	${22.20}_{- 0.07}^{+ 0.07}$ $\[22.20_{-0.07}^{+0.07}\]$
6720	13	440 ±64	${20.67}_{- 0.15}^{+ 0.17}$ $\[20.67_{-0.15}^{+0.17}\]$	64	22.76	74 ±11	${22.61}_{- 0.15}^{+ 0.17}$ $\[22.61_{-0.15}^{+0.17}\]$	102 ±15	${22.26}_{- 0.15}^{+ 0.17}$ $\[22.26_{-0.15}^{+0.17}\]$
6720	14	316 ±64	${21.03}_{- 0.20}^{+ 0.25}$ $\[21.03_{-0.20}^{+0.25}\]$	64	22.76	46 ±9	${23.12}_{- 0.19}^{+ 0.24}$ $\[23.12_{-0.19}^{+0.24}\]$	63 ±13	${22.78}_{- 0.20}^{+ 0.25}$ $\[22.78_{-0.20}^{+0.25}\]$
7700	1	≲560	≲20.26	49	22.91	≲92	≲22.22	≲126	≲21.88
7700	10	≲560	≲20.26	50	22.88	≲79	≲22.39	≲109	≲ 22.04
8700	2	536 ±216	${20.18}_{- 0.37}^{+ 0.56}$ $\[20.18_{-0.37}^{+0.56}\]$	41	22.97	80 ±32	${22.24}_{- 0.37}^{+ 0.55}$ $\[22.24_{-0.37}^{+0.55}\]$	110 ±44	${21.89}_{- 0.37}^{+ 0.55}$ $\[21.89_{-0.37}^{+0.55}\]$
8700	6	914 ±233	${19.60}_{- 0.25}^{+ 0.32}$ $\[19.60_{-0.25}^{+0.32}\]$	41	22.97	139 ±35	${21.64}_{- 0.24}^{+ 0.31}$ $\[21.64_{-0.24}^{+0.31}\]$	191 ±49	${21.30}_{- 0.25}^{+ 0.32}$ $\[21.30_{-0.25}^{+0.32}\]$
8700	7	434 ±242	${20.40}_{- 0.48}^{+ 0.89}$ $\[20.40_{-0.48}^{+0.89}\]$	41	22.97	58 ±43	${22.59}_{- 0.60}^{+ 1.47}$ $\[22.59_{-0.60}^{+1.47}\]$	79 ±59	${22.25}_{- 0.61}^{+ 1.49}$ $\[22.25_{-0.61}^{+1.49}\]$
8700	11	510 ±199	${20.23}_{- 0.36}^{+ 0.54}$ $\[20.23_{-0.36}^{+0.54}\]$	43	22.91	64 ±25	${22.48}_{- 0.36}^{+ 0.54}$ $\[22.48_{-0.36}^{+0.54}\]$	88 ±34	${22.14}_{- 0.35}^{+ 0.53}$ $\[22.14_{-0.35}^{+0.53}\]$
8700	15	710 ±196	${19.87}_{- 0.26}^{+ 0.35}$ $\[19.87_{-0.26}^{+0.35}\]$	45	22.87	88 ±24	${22.14}_{- 0.26}^{+ 0.35}$ $\[22.14_{-0.26}^{+0.35}\]$	120 ±33	${21.80}_{- 0.26}^{+ 0.35}$ $\[21.80_{-0.26}^{+0.35}\]$
8700	16	887 ±222	${19.63}_{- 0.24}^{+ 0.31}$ $\[19.63_{-0.24}^{+0.31}\]$	45	22.87	120 ±30	${21.80}_{- 0.24}^{+ 0.31}$ $\[21.80_{-0.24}^{+0.31}\]$	165 ±41	${21.45}_{- 0.24}^{+ 0.31}$ $\[21.45_{-0.24}^{+0.31}\]$
8700	17	751 ±248	${19.81}_{- 0.31}^{+ 0.44}$ $\[19.81_{-0.31}^{+0.44}\]$	45	22.87	100 ±33	${22.00}_{- 0.31}^{+ 0.43}$ $\[22.00_{-0.31}^{+0.43}\]$	138 ±46	${21.65}_{- 0.31}^{+ 0.44}$ $\[21.65_{-0.31}^{+0.44}\]$
8700	18	563 ±194	${20.12}_{- 0.32}^{+ 0.46}$ $\[20.12_{-0.32}^{+0.46}\]$	42	22.94	66 ±23	${22.45}_{- 0.32}^{+ 0.47}$ $\[22.45_{-0.32}^{+0.47}\]$	90 ±31	${22.11}_{- 0.32}^{+ 0.46}$ $\[22.11_{-0.32}^{+0.46}\]$
8700	19	618 ±255	${20.02}_{- 0.38}^{+ 0.58}$ $\[20.02_{-0.38}^{+0.58}\]$	45	22.87	79 ±33	${22.25}_{- 0.38}^{+ 0.59}$ $\[22.25_{-0.38}^{+0.59}\]$	109 ±45	${21.90}_{- 0.38}^{+ 0.58}$ $\[21.90_{-0.38}^{+0.58}\]$
10 500^†	4	≲3153	≲18.05	31	23.07	≲402	≲20.28	≲553	≲19.94
10 500^†	8	≲1922	≲18.58	32	23.03	≲240	≲20.84	≲330	≲20.50
10 500^†	9	≲1508	≲18.85	32	23.03	≲181	≲21.15	≲249	≲20.80

Notes. Apparent airglow continuum radiance at high air masses reported without any corrections. zenith, emitted + scattered corresponds directly to Eq. (13). ID can be compared against the table of observations, Table 2. ^(†)No detection, upper limit.

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