Available filters | Observatorio de Sierra Nevada

All filters are available for both CCD cameras since the filter wheels are identical. The following tables show the characteristics of each set of filters:

The central wavelength (λc) as well as the full width at half maximum (FWHM or Δλ) have been measured in the IAA optics laboratory.
Most filters are square and their dimensions (side, side, thickness) are given in millimeters as well as the circular filters (diameter, thickness) for which an adapter is available.
Transmittance and Absorbance are provided for each filter in the form of graphs and data.

Note: Those filters that have different transmittance zones, these are well specified in the figure as in the data, being z1, z2, etc ... the different zones in which the filter is divided. The values of λc and Δλ shown in the table correspond to the zone of greater size (Z1) where the transmittance is greater.

Filter request: contact OSN operators before each campaign indicating which filters will be used. Rember that the filter wheel has six positions.

Johnson-Cousin

Number	Name	λc (Å)	Δλ (Å)	Size (mm)	Transmittance		Absorbance
J01	U	3634	560	(50, 50, 5)	Graph	Data	Graph	Data
J02	B	4359	939	(50, 50, 5)	Graph	Data	Graph	Data
J03	V	5389	956	(50, 50, 5)	Graph	Data	Graph	Data
J04	R	6294	1289	(50, 50, 5)	Graph	Data	Graph	Data
J05	I	8782	3118	(50, 50, 5)	Graph	Data	Graph	Data
J06	U	3641	535	(50, 50, 7)	Graph	Data	Graph	Data
J07	B	4318	1102	(50, 50, 7)	Graph	Data	Graph	Data
J08	V	5404	911	(50, 50, 7)	Graph	Data	Graph	Data
J09	R	6396	1513	(50, 50, 7)	Graph	Data	Graph	Data
J10	I	8839	3103	(50, 50, 7)	Graph	Data	Graph	Data
J11	I	8812	3073	(50, 50, 7)	Graph	Data	Graph	Data
J12	I	8809	3065	(50, 50, 7)	Graph	Data	Graph	Data
J13	R	6390	1519	(42, 7)	Graph	Data	Graph	Data
J14	I	8818	3110	(42,7)	Graph	Data	Graph	Data

Strömgren

Number	Name	λc (Å)	Δλ (Å)	Size (mm)	Transmisión		Absorbance
S01	u	3493	307	(50, 50, 5)	Graph	Data	Graph	Data
S02	v	4115	215	(50, 50, 5)	Graph	Data	Graph	Data
S03	b	4676	188	(50, 50, 5)	Graph	Data	Graph	Data
S04	y	5505	219	(50, 50, 5)	Graph	Data	Graph	Data
S05	Hβ(w)	4862	207	(50, 50, 5)	Graph	Data	Graph	Data
S06	Hβ(n)	4863	28	(50, 50, 5)	Graph	Data	Graph	Data
S07	u	3421	294	(50, 50, 7)	Graph	Data	Graph	Data
S08	v	4130	198	(50, 50, 7)	Figure	Data: Z1, Z2, Z3	Graph	Data
S09	b	4728	192	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data
S10	y	5508	217	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data
S11	Hβ(w)	4886	99	(50, 50, 7)	Figure	Data: Z1, Z2, Z3	Graph	Data
S12	Hβ(n)	4880	29	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data

Gunn

Number	Name	λc (Å)	Δλ (Å)	Size (mm)	Transmisión		Absorbance
G01	v	4014	388	(50.8, 50.8, 6.7)	Graph	Data	Graph	Data
G02	g	4921	684	(50.8, 50.8, 6.4)	Graph	Data	Graph	Data
G03	r	6516	884	(50.8, 50.8, 6.7)	Graph	Data	Graph	Data

Molecular Filters

Number	Name	λc (Å)	Δλ (Å)	Size (mm)	Transmittance		Absorbance
M01	3700/150	3704	142	(50, 50, 7)	Graph	Data	Graph	Data
M02	4500/150	4522	140	(50, 50, 7)	Graph	Data	Graph	Data
M03	5430/100	5438	92	(50, 50, 7)	Figure	Data: Z1, Z2, Z3, Z4	Graph	Data
M04	6184/20	6180	22	(50, 50, 7)	Figure	Data: Z1, Z2, Z3	Graph	Data
M05	7270/20	7268	19	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data
M06	7500/50	7494	45	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data
M07	8920/50	8913	60	(50, 50, 7)	Graph	Data	Graph	Data
M08	9480/50	9509	75	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data

Hα Redshifts

Number	Name	λc (Å)	Δλ (Å)	Size (mm)	Transmittance		Absorbance
H01	Hα(n) 6563	6565	13	(50, 50, 5)	Graph	Data	Graph	Data
H02	Hα(w) 6563	6570	52	(50, 50, 7)	Graph	Data	Graph	Data
H03	Hα 6607	6615	44	(50, 50, 7)	Graph	Data	Graph	Data
H04	Hα 6652	6661	55	(50, 50, 7)	Figure	Data	Graph	Data
H05	Hα 6700	6704	44	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data
H06	Hα 6742	6742	44	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data
H07	Hα 6789	6797	51	(50, 50, 7)	Graph	Data	Graph	Data
H08	Hα 6835	6841	58	(50, 50, 7)	Graph	Data	Graph	Data
H09	Hα 6877	6885	72	(50, 50, 7)	Graph	Data	Graph	Data
H10	Hα 6925	6931	47	(50, 50, 7)	Graph	Data	Graph	Data
H11	Hα 6970	6975	54	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data

Emission Lines

Number	Name	λc (Å)	Δλ (Å)	Size (mm)	Transmittance		Absorbance
E01	OII 3731	3727	46	(50, 50, 7)	Graph	Data	Graph	Data
E02	NeII 3869	3868	50	(50, 50, 7)	Graph	Data	Graph	Data
E03	CaII 3950	3931	71	(50, 50, 5)	Figure	Data: Z1, Z2	Graph	Data
E04	Hδ 4101	4103	55	(50, 50, 7)	Figure	Data: Z1, Z2, Z3	Graph	Data
E05	Hγ 4340	4348	29	(50, 50, 7)	Figure	Data: Z1, Z2, Z3	Graph	Data
E06	HeI 4471	4479	51	(50, 50, 7)	Figure	Data: Z1, Z2, Z3	Graph	Data
E07	HeII 4691	4695	53	(50, 50, 7)	Figure	Data: Z1, Z2, Z3	Graph	Data
E08	Hβ 4866	4874	42	(50, 50, 7)	Figure	Data: Z1, Z2, Z3	Graph	Data
E09	OIII 5000	4992	153	(50, 50, 5)	Graph	Data	Graph	Data
E10	O III 5007	5015	50	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data
E11	O III 5057	5087	45	(50, 50, 7)	Figure	Data: Z1, Z2, Z3	Graph	Data
E12	OIII 5107	5115	55	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data
E13	OIII 5157	5165	47	(50, 50, 7)	Figure	Data: Z1, Z2	Graph	Data
E14	HeI 5876	5881	56	(50, 50, 7)	Figure	Data: Z1, Z2, Z3	Graph	Data
E15	OI 6300	6311	60	(50, 50, 7)	Graph	Data	Graph	Data
E16	NII 6584	6583	13	(50, 50, 5)	Graph	Data	Graph	Data
E17	SII 6716	6713	10	(50, 50, 6.2)	Graph	Data	Graph	Data
E18	SII 6723	6729	49	(50, 50, 7)	Graph	Data	Graph	Data
E19	SII 6731	6730	10	(50, 50, 5.9)	Figure	Data: Z1, Z2	Graph	Data

Cometary Filters

With the cometary filters of 25 mm diameter, the CCDT150 FoV maximun is 5,73 arcmin.

Number	Name	λc (Å)	Δλ(Å)	Size (mm)	Transmittance		Absorbance
C01	CN	3859	53	(50, 9.15)	Graph	Data	Graph	Data
C02	C₃	4056	73	(50, 9.15)	Figure	Data: Z1, Z2	Graph	Data
C03	Continuum 4430	4429	37	(50, 9.15)	Graph	Data	Graph	Data
C04	C₂	5116	122	(50, 9.15)	Graph	Data	Graph	Data
C05	NH₂	6623	35	(50, 9.15)	Graph	Data	Graph	Data
C06	Continuum 6840	6841	84	(50, 9.15)	Graph	Data	Graph	Data
C07	CO+	4315	73	(25, 6.5)	Graph	Data	Graph	Data
C08	C₂	5162	88	(25, 6.5)	Graph	Data	Graph	Data
C09	Continuum 6840	6847	91	(25, 6.5)	Graph	Data	Graph	Data
C10	H₂O+	7043	161	(25, 6.5)	Graph	Data	Graph	Data