Narrowband

3nm OIII Filter Optimized for f/2.8-f/3.6

Chroma

~$907.75

SHO-3nm 2" Filter Set

Optolong

~$1,177.72

4.5nm Narrowband OIII EDGE Filter - 50mm Unmounted

Antlia

$385.00

UBVRI Photometric Filter 1.25"

Baader

~$824.05

ALP-T Dual Band 5nm Ha/OIII

Antlia

~$309.13

Ultra High Contrast Telescope Filter - 1.25"

Optolong

$55.00

NB1 Nebula Booster Filter - 52mm

IDAS

~$217.05

Colour Magic H-alpha SII OIII 3nm 2"

Askar

~$1,364.42

Color Magic Ultra E 2" Duo-band Filter Package

Askar

$1,199.00

4.5nm Narrowband H-Alpha EDGE Filter - 50mm Unmounted

Antlia

$385.00

CaK 3nm 393.3nm Filter

Antlia

~$248.47

Colour Magic 2" Duo-Narrowband 3nm

Askar

~$438.48

ALP-T Dual Narrowband 3.5nm SII & H-Beta

Antlia

~$373.59

ALP-T Dual Band 5nm H-Beta and SII

Antlia

~$363.21

Ultra High Contrast Telescope Filter - 2"

Optolong

$85.00

OIII 6.5nm Filter 1.25"

Optolong

$159.00

2" H-alpha 3nm Telescope Filter

Chroma

$1,300.00

Nebula Filter Oxygen III 1.25-inch 6.5nm

Explore Scientific

~$104.92

2.5nm Narrowband Oxygen III (OIII) Ultra Imaging Filter - 2"

Antlia

$649.00

OIII 6nm CCD MaxFR Clip-Filter EOS XL

Astronomik

$649.95

C2 Swan-Band Filter 15nm O-III 2"

Baader

~$169.55

Bandmate Type 2 OIII Filter - 1.25"

TeleVue

$125.00

SV115

SVBONY

~$61.39

3nm H-Alpha Pro Filter - 50mm Unmounted

Antlia

$539.00

SII 6.5nm Filter - 1.25"

Optolong

$159.00

SHO (S-II, H-α & O-III) Narrowband 3nm Pro Filter Set - 2"

Antlia

$1,303.50

SV227 SHO 5nm Narrowband Filter Set 2"

SVBONY

~$464.79

3nm Narrowband Sulfur II - 2" Mounted

Antlia

$434.50