Blocking filters block either short wavelength UV or long wavelength infrared light. There are also filters that block both of these wavelength regions.

Omegon
Blocking Filters Infrared band elimination filter
$ 24.90
ready for shipping in 24
h

Omegon
Blocking Filters 1.25''UV / IR cut-off filter
$ 79.00
ready for shipping in 24
h

Lumicon
Blocking Filters Minus Violet 1.25''
$ 115.00
Product can be shipped as of 01.01.2024

Lumicon
Blocking Filters Minus Violet 2''
$ 153.00
Product can be shipped as of 01.01.2024

Lumicon
Infrared blocking filter 1.25''
$ 252.00
ready for shipping in 24
h

Baader
Blocking Filters Solar Continuum 1.25"
Our price:
RRP:
$ 131.00
$ 130.00
ready for shipping in 1-2
weeks

Celestron
Blocking Filters Skyris IR-Cut Filter 1,25"
$ 31.90
ready for shipping in 1-2
weeks

Astronomik
Blocking Filters Infrared-cutting filter, SC
$ 153.00
ready for shipping in 24
h

Astrodon
Blocking Filters Exoplanet BB 1.25" filter
$ 323.00
Product can be shipped as of 01.01.2024

Astronomik
2'' IR blocking filter
$ 109.00
ready for shipping in 1-2
weeks

Astronomik
Blocking Filters Infrared cutting filter, T2
$ 98.00
ready for shipping in 1-2
weeks

ZWO
Blocking Filters UV/IR 1,25"
$ 77.00
ready for shipping in 24
h

Astrodon
Blocking Filters Exoplanet BB 49.7mm filter, unmounted
$ 483.00
Product can be shipped as of 01.01.2024

Astrodon
Blocking Filters Exoplanet BB 49.7 x 49.7mm filter, unmounted
$ 610.00
Product can be shipped as of 01.01.2024

Artesky
Blocking Filters IR-Cut 2"
$ 64.00
Product can be shipped as of 15.12.2023

ZWO
Blocking Filters IR-CUT Protect Window ASI D21
Our price:
RRP:
$ 32.90
$ 27.90
ready for shipping in 24
h

DayStar
Blocking Filters UV/IR 2"
$ 208.00
ready for shipping in 6-10
weeks

ZWO
Blocking Filters IR-CUT Protect Window ASI D25
$ 32.90
ready for shipping in 3-5
weeks

Baader
Blocking Filters Solar Continuum 2"
$ 218.00
Product can be shipped as of 24.01.2024

Astronomik
1.25" IR blocking filter
$ 65.00
ready for shipping in 24
h