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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
Optolong Filters L-eXtreme 2"
Optolong
Filters L-eXtreme 2"
$ 359.00
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
Omegon Filters 1.25'' deep sky filter
Omegon
Filters 1.25'' deep sky filter
$ 89.00
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-eNhance 2"
Optolong
Filters L-eNhance 2"
( 5 / 5 )
$ 261.00
ready for shipping in 24 h
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
Optolong Filters L-Ultimate 2"
Optolong
Filters L-Ultimate 2"
$ 435.00
ready for shipping in 24 h
Omegon Filters OIII Filter 2"
Omegon
Filters OIII Filter 2"
( 5 / 5 )
$ 119.00
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
Omegon Filters Pro UHC filter M56
Omegon
Filters Pro UHC filter M56
( 1 / 5 )
$ 99.00
ready for shipping in 24 h
Baader Filters H-alpha/OIII/SII CMOS f/2 Highspeed 1.25"
Baader
Filters H-alpha/OIII/SII CMOS f/2 Highspeed 1.25"
$ 457.00
ready for shipping in 1-2 weeks
Optolong Filters SHO Filter Kit 3nm 2"
Optolong
Filters SHO Filter Kit 3nm 2"
$ 1,400.00
ready for shipping in 3-5 weeks
Vaonis Filters CLS Filter for VESPERA
Vaonis
Filters CLS Filter for VESPERA
$ 250.00
ready for shipping in 3-5 weeks
Optolong Filters L-eXtreme F2 (2")
Optolong
Filters L-eXtreme F2 (2")
$ 381.00
ready for shipping in 24 h
Optolong Filters SHO Filter Kit 2"
Optolong
Filters SHO Filter Kit 2"
$ 790.00
ready for shipping in 24 h
Omegon Filters Pro 2'' SII CCD filter
Omegon
Filters Pro 2'' SII CCD filter
( 1 / 5 )
$ 189.00
ready for shipping in 24 h
STC Filters Duo-NB Clip-Filter Canon (Full Frame)
STC
Filters Duo-NB Clip-Filter Canon (Full Frame)
$ 520.00
ready for shipping in 24 h
Baader Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 50x50mm
Baader
Filters H-alpha/OIII/SII CMOS Ultra-Narrowband 50x50mm
$ 1,320.00
ready for shipping in 1-2 weeks
Astronomik Filters UHC 1.25"
Astronomik
Filters UHC 1.25"
$ 108.00
ready for shipping in 24 h
Baader Filters H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 2"
Baader
Filters H-alpha/OIII/SII CMOS f/2 Ultra-Highspeed 2"
$ 1,200.00
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
Omegon Filters Pro 1.25'' OIII CCD filter
Omegon
Filters Pro 1.25'' OIII CCD filter
$ 129.00
ready for shipping in 24 h
Explore Scientific Filters SII 6.5nm 2"
Explore Scientific
Filters SII 6.5nm 2"
RRP:  $ 250.00
Our price:
$ 126.00
ready for shipping in 24 h
Explore Scientific Filters H-alpha 7nm 2"
Explore Scientific
Filters H-alpha 7nm 2"
$ 250.00
ready for shipping in 24 h
IDAS Filters SHO Filter Set 50.8mm
IDAS
Filters SHO Filter Set 50.8mm
$ 1,390.00
ready for shipping in 3-5 weeks
Optolong Filters SII Filter 2"
Optolong
Filters SII Filter 2"
RRP:  $ 261.00
Our price:
$ 250.00
ready for shipping in 24 h
STC Filters Astro Duo Narrowband Filter 2"
STC
Filters Astro Duo Narrowband Filter 2"
$ 660.00
Sale price:
$ 587.35
ready for shipping in 24 h
Explore Scientific Filters H-alpha 12nm 1.25"
Explore Scientific
Filters H-alpha 12nm 1.25"
$ 174.00
ready for shipping in 1-2 weeks
Omegon Filters 1.25'' Clear Sky filter
Omegon
Filters 1.25'' Clear Sky filter
$ 129.00
ready for shipping in 24 h
Astrodon Filters H-Alpha 5nm
Astrodon
Filters H-Alpha 5nm
$ 710.00
Sale price:
$ 487.10
ready for shipping in 24 h
Omegon Filters Pro 1.25'' SII CCD filter
Omegon
Filters Pro 1.25'' SII CCD filter
$ 129.00
ready for shipping in 24 h
Explore Scientific Filters SII 12nm 2"
Explore Scientific
Filters SII 12nm 2"
RRP:  $ 206.00
Our price:
$ 104.00
ready for shipping in 1-2 weeks