SVO Filter Profile Service

Keck :W.M. Keck Observatory
Keck/LWS :The Long Wavelength Spectrometer (LWS) is a Keck facility instrument offering diffraction-limited imaging and spectroscopy in the 3-25 Âµm range from the forward Cassegrain focus on Keck I.

Keck filters: ESI LRIS LWS NIRC2 NIRSPEC OSIRIS

Filter ID	λ_ref	λ_mean	λ_eff	λ_min	λ_max	W_eff	ZP_ν	ZP_λ	Obs. Facility	Instrument	Description
Keck/LWS.0800	83621.16	83848.39	83249.87	75585.97	94239.81	11239.31	54.75	2.37e-13	Keck	LWS	LWS 8.0, 7.81-8.94
Keck/LWS.0890	88186.17	88310.07	87987.00	82133.59	95439.44	8178.02	49.42	1.91e-13	Keck	LWS	LWS 8.9, 8.39-9.27
Keck/LWS.0990	100386.96	100468.48	100252.73	94902.09	106799.58	7448.99	38.50	1.15e-13	Keck	LWS	LWS 9.9, 9.67-10.42
Keck/LWS.Nwide	101095.38	104871.31	95317.17	73559.35	137327.02	52412.14	36.98	1.22e-13	Keck	LWS	LWS Nwide, 7.73-13.31
Keck/LWS.1070	106692.03	107099.57	106025.98	89710.00	129900.00	15698.97	34.05	9.08e-14	Keck	LWS	LWS 10.7, 9.92-11.47
Keck/LWS.Spec10	107837.08	114452.14	98001.94	72999.19	154200.00	68146.79	32.10	1.0e-13	Keck	LWS	LWS Spec 10, >7.52 µm (long pass)
Keck/LWS.1170	116779.87	116928.66	116543.05	109007.19	125423.43	10433.13	28.57	6.31e-14	Keck	LWS	LWS 11.7, 11.15-12.25
Keck/LWS.SiC	117037.57	117666.68	116007.42	100724.57	133615.15	22190.58	28.36	6.32e-14	Keck	LWS	LWS SiC, 10.64-12.96
Keck/LWS.1250	126138.63	126320.84	125843.39	117069.89	136331.94	11779.82	24.56	4.65e-14	Keck	LWS	LWS 12.5, 12.01-13.25
Keck/LWS.1765	177315.20	177400.71	177174.39	167592.96	187781.45	8881.96	12.57	1.2e-14	Keck	LWS	LWS 17.65, 17.31-18.16
Keck/LWS.1875	187397.87	187474.97	187264.34	177868.02	196880.31	9066.17	11.22	9.6e-15	Keck	LWS	LWS 18.75, 18.31-19.20
Keck/LWS.2310	230978.24	231033.80	230886.21	220595.57	241806.14	7881.79	7.43	4.18e-15	Keck	LWS	LWS 23.1, 22.74 - 23.47
Keck/LWS.2450	245219.25	245271.42	245133.44	235056.43	255735.63	8001.37	6.60	3.29e-15	Keck	LWS	LWS 24.5, 24.16 - 24.90

Filter Plots (using a common λ range)

(Plot them zoomed to their own λ range)

If your research benefits from the use of the SVO Filter Profile Service, we would appreciate if you could include the following acknowledgement in your publication:

This research has made use of the Spanish Virtual Observatory (https://svo.cab.inta-csic.es) project funded by MCIN/AEI/10.13039/501100011033/ through grant PID2020-112949GB-I00

and we would appreciate if you could include the following references in your publication:

The SVO Filter Profile Service. Rodrigo, C., Solano, E., Bayo, A., 2012; https://ui.adsabs.harvard.edu/abs/2012ivoa.rept.1015R/abstract
The SVO Filter Profile Service. Rodrigo, C., Solano, E., 2020; https://ui.adsabs.harvard.edu/abs/2020sea..confE.182R/abstract