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 1.25''UV / IR cut-off filter
$ 79.00
ready for shipping in 24
h
ZWO
Blocking Filters UV/IR 1.25"
$ 95.00
ready for shipping in 24
h
Lumicon
Infrared blocking filter 1.25''
$ 211.00
Sale price:
$ 157.37
ready for shipping in 24
h
Baader
Blocking Filters Solar Continuum 2"
$ 210.00
ready for shipping in 1-2
weeks
Omegon
Blocking Filters Infrared band elimination filter
( 5 / 5 )
$ 24.90
ready for shipping in 24
h
Astronomik
Blocking Filters Infrared-cutting filter, SC
$ 147.00
Sale price:
$ 95.06
ready for shipping in 24
h
Baader
Blocking Filters Solar Continuum 1.25"
RRP:
$ 126.00
Our price:
$ 125.00
ready for shipping in 24
h
TS Optics
Blocking Filters UV/IR 1.25"
$ 64.00
ready for shipping in 3-7
days
Astronomik
1.25" IR blocking filter
$ 63.00
ready for shipping in 24
h
ZWO
Blocking Filters IR-CUT Protect Window ASI D21
RRP:
$ 31.90
Our price:
$ 26.90
ready for shipping in 3-5
weeks
DayStar
Blocking Filters UV/IR 2"
$ 200.00
ready for shipping in 3-6
months
Astronomik
2'' IR blocking filter
$ 105.00
ready for shipping in 3-7
days
Astronomik
Blocking Filters Infrared cutting filter, T2
$ 95.00
ready for shipping in 3-7
days
ZWO
Blocking Filters IR-CUT Protect Window ASI D25
$ 31.90
ready for shipping in 3-5
weeks
Celestron
Blocking Filters Skyris IR-Cut Filter 1,25"
$ 30.90
ready for shipping in 1-2
weeks
Artesky
Blocking Filters IR-Cut 2"
$ 62.00
ready for shipping in 3-5
weeks