A UHC filter suppresses the illumination of the background sky caused by artificial light. By contrast, the wavelengths primarily emitted by nebular celestial objects are allowed to pass through.
The effect for the observer is a significant increase in contrast. The use of a UHC filter is not only advisable in light-polluted areas. Contrast is increased even under dark skies.

Omegon
Filters Pro 1.25'' UHC filter
$ 69.00
ready for shipping in 24
h

Omegon
Filters Pro 2'' UHC filter
$ 99.00
ready for shipping in 24
h

Optolong
Filters L-eXtreme 2"
$ 342.00
ready for shipping in 24
h

Vaonis
Filters Dual Band Filter for VESPERA
$ 415.00
ready for shipping in 24
h

Optolong
Filters L-Ultimate 2"
$ 415.00
ready for shipping in 24
h

Optolong
Filters L-Para 2"
$ 311.00
ready for shipping in 24
h

ZWO
Filters 1.25" Duo band
RRP:
$ 135.00
Our price:
$ 134.00
ready for shipping in 24
h

STC
Filters Astro Duo Narrowband Filter 2"
$ 630.00
ready for shipping in 24
h

Astronomik
Filters UHC 1.25"
$ 103.00
ready for shipping in 24
h

Optolong
Filters L-eXtreme 1,25"
$ 259.00
ready for shipping in 24
h

Optolong
Filters L-eXtreme F2 (2")
$ 363.00
ready for shipping in 24
h

STC
Filters Duo-NB Clip Canon (Full Frame)
$ 488.00
ready for shipping in 1-2
weeks

ZWO
Filters 2" Duo band
RRP:
$ 280.00
Our price:
$ 259.00
ready for shipping in 24
h

Optolong
Filters UHC Filter, 2"
$ 155.00
ready for shipping in 24
h

Sharpstar
Filters D Duo-Band Filter SII & OIII 2"
$ 280.00
ready for shipping in 24
h

Baader
Filters UHC-L 1.25''
$ 102.00
ready for shipping in 1-2
weeks

Astronomik
Filters UHC 2"
$ 207.00
ready for shipping in 3-7
days

Explore Scientific
Filters Filter UHC 1,25"
$ 83.00
ready for shipping in 24
h

Astronomik
Filters UHC-E 1.25"
$ 78.00
ready for shipping in 24
h

Baader
Filters UHC-L 2"
$ 176.00
ready for shipping in 1-2
weeks

Astronomik
Filters UHC Clip Sony Alpha
$ 249.00
ready for shipping in 3-7
days

Astronomik
Filters UHC Clip Nikon XL
$ 249.00
ready for shipping in 3-7
days

Astronomik
Filters UHC Clip Nikon Z XL
$ 249.00
ready for shipping in 3-7
days

Astronomik
Filters UHC-E Sony Alpha Clip filter
$ 166.00
ready for shipping in 24
h

Astronomik
Filters UHC-E XL Clip Canon EOS
$ 155.00
ready for shipping in 3-7
days

Explore Scientific
Filters Filter UHC 2"
$ 114.00
ready for shipping in 24
h

Astronomik
Filters UHC Clip Canon EOS APS-C
$ 145.00
ready for shipping in 3-7
days

Astronomik
Filters UHC-E 2"
$ 145.00
ready for shipping in 3-7
days

IDAS
Filters Nebula Booster NB1 52mm
( 5 / 5 )
RRP:
$ 353.00
RRP:
$ 353.00
Our price:
$ 332.00
ready for shipping in 3-5
weeks

Astronomik
Filters UHC-E Clip Canon EOS M
$ 124.00
ready for shipping in 3-7
days

Astronomik
Filters UHC-E XT Clip EOS APS-C
$ 124.00
ready for shipping in 3-7
days

Astronomik
Filters UHC-E M58
$ 290.00
ready for shipping in 3-7
days

STC
Filters Duo-NB Clip-Filter Sony (APS-C)
$ 342.00
ready for shipping in 3-5
weeks

Astronomik
Filters UHC XL Clip Canon EOS
$ 228.00
ready for shipping in 3-7
days

Astronomik
Filters UHC XT Clip Canon EOS APS-C
$ 166.00
ready for shipping in 3-7
days

Astronomik
Filters UHC XL Clip Canon EOS R
$ 249.00
ready for shipping in 3-7
days