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In the nebula filters category you will find both broadband and line filters. The latter only selectively allow the light of a certain spectral line through. OIII and H alpha filters are especially popular. Many deep sky objects will only reveal their full glory when observing using these filters!

As the name suggests, wideband and narrowband filters pass a wider range and narrower of the spectrum. They are used primarily to suppress light pollution.

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Omegon Filters Nebula/ city light filter 1.25 ''
Omegon
Filters Nebula/ city light filter 1.25 ''
( 3.5 / 5 )
$ 39.90
ready for shipping in 24 h
Omegon Filters Light Pollution Filter, 2”
Omegon
Filters Light Pollution Filter, 2”
( 3.33 / 5 )
$ 59.00
ready for shipping in 24 h
Omegon Filters UHC Filter, 1.25“
Omegon
Filters UHC Filter, 1.25“
$ 69.00
ready for shipping in 24 h
Omegon Filters Pro 1.25'' UHC filter
Omegon
Filters Pro 1.25'' UHC filter
$ 69.00
ready for shipping in 24 h
Omegon Filters Pro 2'' UHC filter
Omegon
Filters Pro 2'' UHC filter
$ 99.00
ready for shipping in 24 h
Optolong Filters L-eXtreme 2"
Optolong
Filters L-eXtreme 2"
$ 359.00
ready for shipping in 24 h
Optolong Filters L-eNhance 2"
Optolong
Filters L-eNhance 2"
( 5 / 5 )
$ 261.00
ready for shipping in 24 h
Omegon Filters Pro UHC filter M56
Omegon
Filters Pro UHC filter M56
( 1 / 5 )
$ 99.00
ready for shipping in 24 h
OPT Filters Triad Ultra Quad-Band Narrowband Filter 2"
OPT
Filters Triad Ultra Quad-Band Narrowband Filter 2"
$ 2,280.00
ready for shipping in 24 h
Optolong Filters L-Pro 2''
Optolong
Filters L-Pro 2''
( 5 / 5 )
RRP:  $ 228.00
Our price:
$ 217.00
ready for shipping in 3-5 weeks
Omegon Filters 1.25'' deep sky filter
Omegon
Filters 1.25'' deep sky filter
$ 89.00
ready for shipping in 24 h
Vaonis Filters CLS Filter for VESPERA
Vaonis
Filters CLS Filter for VESPERA
$ 250.00
ready for shipping in 3-5 weeks
Optolong Filters L-Quad Enhance 2"
Optolong
Filters L-Quad Enhance 2"
RRP:  $ 261.00
Our price:
$ 250.00
ready for shipping in 24 h
Astronomik Filters UHC 1.25"
Astronomik
Filters UHC 1.25"
$ 108.00
ready for shipping in 24 h
Optolong Filters L-Ultimate 2"
Optolong
Filters L-Ultimate 2"
$ 435.00
ready for shipping in 24 h
Vaonis Filters Dual Band Filter for VESPERA
Vaonis
Filters Dual Band Filter for VESPERA
$ 435.00
ready for shipping in 3-5 weeks
Optolong Filters L-Pro 1.25''
Optolong
Filters L-Pro 1.25''
RRP:  $ 174.00
Our price:
$ 163.00
ready for shipping in 24 h
Optolong Filters L-eXtreme F2 (2")
Optolong
Filters L-eXtreme F2 (2")
$ 380.00
ready for shipping in 24 h
Explore Scientific Filters Filter UHC 1,25"
Explore Scientific
Filters Filter UHC 1,25"
$ 86.00
ready for shipping in 24 h
ZWO Filters 1.25" filter set: H-alpha, SII, OIII
ZWO
Filters 1.25" filter set: H-alpha, SII, OIII
RRP:  $ 620.00
Our price:
$ 548.00
ready for shipping in 3-5 weeks
Omegon Filters OIII filter 1.25''
Omegon
Filters OIII filter 1.25''
$ 89.00
ready for shipping in 24 h
Astrodon Filters H-Alpha 5nm
Astrodon
Filters H-Alpha 5nm
$ 710.00
Sale price:
$ 486.43
ready for shipping in 24 h
Baader Filters H-alpha/OIII/SII CMOS f/2 Highspeed 2"
Baader
Filters H-alpha/OIII/SII CMOS f/2 Highspeed 2"
$ 750.00
ready for shipping in 1-2 weeks
Omegon Filters Pro Nebula CLS Deep Sky Filter 1,25''
Omegon
Filters Pro Nebula CLS Deep Sky Filter 1,25''
$ 69.00
ready for shipping in 24 h
Omegon Filters Pro 2'' CLS filter
Omegon
Filters Pro 2'' CLS filter
$ 99.00
ready for shipping in 3-5 weeks
Baader Filters H-alpha/OIII/SII CMOS Narrowband 2"
Baader
Filters H-alpha/OIII/SII CMOS Narrowband 2"
$ 720.00
ready for shipping in 1-2 weeks
Omegon Filters OIII Filter 2"
Omegon
Filters OIII Filter 2"
( 5 / 5 )
$ 119.00
ready for shipping in 24 h
Optolong Filters L-eXtreme 1,25"
Optolong
Filters L-eXtreme 1,25"
$ 271.00
ready for shipping in 24 h
ZWO Filters 1.25" Duo band
ZWO
Filters 1.25" Duo band
RRP:  $ 141.00
Our price:
$ 134.00
ready for shipping in 24 h
Astronomik Filters H-alpha 6nm CCD MaxFR 2"
Astronomik
Filters H-alpha 6nm CCD MaxFR 2"
$ 740.00
ready for shipping in 3-7 days
Optolong Filters L-Ultimate 1,25"
Optolong
Filters L-Ultimate 1,25"
$ 282.00
ready for shipping in 24 h
Baader Filters H-alpha CMOS f/2 Ultra-Highspeed 2"
Baader
Filters H-alpha CMOS f/2 Ultra-Highspeed 2"
$ 472.00
ready for shipping in 1-2 weeks
Astronomik Filters 2" OIII filter
Astronomik
Filters 2" OIII filter
$ 217.00
ready for shipping in 24 h
Astronomik Filters UHC 2"
Astronomik
Filters UHC 2"
$ 217.00
ready for shipping in 24 h
Optolong Filters SHO Filter Kit 3nm 2"
Optolong
Filters SHO Filter Kit 3nm 2"
$ 1,400.00
ready for shipping in 3-5 weeks
Optolong Filters L-eNhance 1.25
Optolong
Filters L-eNhance 1.25
RRP:  $ 206.00
Our price:
$ 195.00
ready for shipping in 24 h