SPHERE Filters


IRDIS filters

Broad-band filters

Filter Name Central Wavelength (nm) Width (nm) Transmission
B_Y 1043 140 Plot - Numerical values
B_J 1245 240 Plot - Numerical values
B_H 1625 290 Plot - Numerical values
B_Ks 2182 300 Plot - Numerical values

Dual-band filters

Filter Name Central Wavelength (nm) Width (nm) Transmission
D_Y23
1022 , 1076 49 , 50 Plot - Numerical values
D_J23
1190 , 1273 42 , 46 Plot - Numerical values
D_H23
1593 , 1667 52 , 54 Plot - Numerical values
D_ND-H23
1593 , 1667 52 , 54 Plot - Numerical values
D_H34 1667 , 1733 54 , 57 Plot - Numerical values
D_K12
2110 , 2251 102 , 109 Plot - Numerical values

Narrow-band filters

Filter Name Central Wavelength (nm) Width (nm) Transmission
N_HeI
1085 14
Plot - Numerical values
N_CntJ
1213 17
Plot - Numerical values
N_PaB
1283 18
Plot - Numerical values
N_CntH
1573 23
Plot - Numerical values
N_FeII
1642 24
Plot - Numerical values
N_CntK1
2091 34
Plot - Numerical values
N_H2
2124 31
Plot - Numerical values
N_BrG
2170 31
Plot - Numerical values
N_CntK2
2266 32
Plot - Numerical values
N_CO
2290 33
Plot - Numerical values

Near-infrared neutral density filters

Near-infrared neutral density filters

ZIMPOL filters

Very broad-band and broad-band filters

Filter Name Central Wavelength (nm) Width (nm) Transmission
VBB
735.4
290.5 Plot - Numerical values
R_PRIM
626.3 148.6
Plot - Numerical values
I_PRIM
789.7 152.7
Plot - Numerical values

Medium-band filters

Filter Name Central Wavelength (nm) Width (nm) Transmission
V
554
80.6
Plot - Numerical values
V_S 531.6 37.2 Plot - Numerical values
V_L 581.5 41.1 Plot - Numerical values
N_R 645.9 56.7 Plot - Numerical values
730_NB 733 54.9 Plot - Numerical values
N_I 816.8 80.5 Plot - Numerical values
I_L 870.6 56.4 Plot - Numerical values
KI 770.2 21.2 Plot - Numerical values
TiO_717 716.8 19.7 Plot - Numerical values
CH4_727 730.3 20.5 Plot - Numerical values
Cnt748 747.4 20.6 Plot - Numerical values
Cnt820 817.3 19.8 Plot - Numerical values

Narrow-band filters

Filter Name Central Wavelength (nm) Width (nm) Transmission
B_Ha
655.6
5.5
Plot - Numerical values
Cnt_Ha
644.9 4.1 Plot - Numerical values
HeI 588 5.4 Plot - Numerical values
OI_630 629.5 5.4 Plot - Numerical values
N_Ha 656.34 0.97 Plot - Numerical values
Ha_NB 656.49 0.98 NA

Visible neutral density filters

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