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
$ 89.00
ready for shipping in 24
h

Optolong
Filters L-eXtreme 2"
RRP:
$ 386.00
Our price:
$ 308.00
ready for shipping in 24
h

Optolong
Filters L-Ultimate 2"
RRP:
$ 444.00
Our price:
$ 355.00
ready for shipping in 24
h

Optolong
Filters L-Para 2"
RRP:
$ 292.00
Our price:
$ 233.00
ready for shipping in 3-5
weeks

Omegon
Filters Pro UHC filter M56
( 1 / 5 )
$ 99.00
ready for shipping in 24
h

Astronomik
Filters UHC 1.25"
$ 116.00
ready for shipping in 24
h

Optolong
Filters L-eXtreme 1,25"
RRP:
$ 304.00
Our price:
$ 243.00
ready for shipping in 24
h

Astronomik
Filters UHC 2"
$ 233.00
ready for shipping in 24
h

ZWO
Filters 2" Duo band
RRP:
$ 351.00
Our price:
$ 325.00
ready for shipping in 24
h

ZWO
Filters 1.25" Duo band
RRP:
$ 187.00
Our price:
$ 178.00
ready for shipping in 24
h

Vaonis
Filters Dual Band VESPERA
$ 468.00
ready for shipping in 24
h

Baader
Filters UHC-L 1.25''
$ 115.00
ready for shipping in 24
h

Baader
Filters UHC-L 2"
$ 198.00
ready for shipping in 24
h

Astronomik
Filters UHC-E 1.25"
$ 88.00
ready for shipping in 24
h

STC
Filters Astro Duo Narrowband Filter 2"
$ 660.00
ready for shipping in 24
h

Explore Scientific
Filters Filter UHC 1,25"
$ 93.00
ready for shipping in 24
h

Optolong
Filters UHC Filter, 2"
RRP:
$ 116.00
Our price:
$ 93.00
ready for shipping in 24
h

Astronomik
Filters UHC-E M77
$ 351.00
ready for shipping in 3-7
days

Astronomik
Filters UHC-E M72
$ 351.00
ready for shipping in 24
h

Astronomik
Filters UHC XL Clip Canon EOS R
$ 280.00
ready for shipping in 3-7
days

Astronomik
Filters UHC Clip Sony Alpha
$ 280.00
ready for shipping in 3-7
days

Astronomik
Filters UHC M52
$ 269.00
ready for shipping in 3-7
days

Astronomik
Filters UHC-E XL Clip Canon EOS R
$ 198.00
ready for shipping in 3-7
days

Explore Scientific
Filters Filter UHC 2"
$ 128.00
ready for shipping in 24
h

Astronomik
Filters UHC-E 2"
$ 163.00
ready for shipping in 24
h

Astronomik
Filters UHC Clip Canon EOS APS-C
$ 163.00
ready for shipping in 3-7
days

Astronomik
Filters UHC 36mm mounted filter
$ 163.00
ready for shipping in 24
h

Antlia
Filters ALP-T Dual Band H-Alpha & OIII 5nm 2"
$ 670.00
ready for shipping in 1-2
weeks

Astronomik
Filters Canon EOS UHC-E clip filter APS-C
$ 128.00
ready for shipping in 24
h

Optolong
Filters UHC Filter 1,25
( 5 / 5 )
RRP:
$ 81.00
RRP:
$ 81.00
Our price:
$ 65.00
ready for shipping in 3-5
weeks

Hutech Astro
Filters Nebula Contrast Booster 2"
$ 540.00
ready for shipping in 24
h

Hutech Astro
Filters Sightron Quad BP 2"
RRP:
$ 351.00
Our price:
$ 293.00
ready for shipping in 3-5
weeks

Astronomik
Filters UHC Clip Nikon Z XL
$ 280.00
ready for shipping in 3-7
days

Astronomik
Filters UHC Clip Nikon XL
$ 280.00
ready for shipping in 24
h

Baader
Filters UHC-L 36mm
$ 162.00
ready for shipping in 1-2
weeks