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
Omegon
Blocking Filters Infrared band elimination filter
( 5 / 5 )
$ 24.90
ready for shipping in 24
h
Baader
Blocking Filters Solar Continuum 1.25"
RRP:
$ 137.00
Our price:
$ 136.00
ready for shipping in 24
h
ZWO
Blocking Filters UV/IR 1.25"
$ 103.00
ready for shipping in 24
h
TS Optics
Blocking Filters UV/IR 1.25"
$ 69.00
ready for shipping in 24
h
Astronomik
2'' IR blocking filter
$ 114.00
ready for shipping in 3-7
days
Baader
Blocking Filters Solar Continuum 2"
$ 228.00
ready for shipping in 1-2
weeks
ZWO
Blocking Filters IR ASI D21
RRP:
$ 34.90
Our price:
$ 28.90
ready for shipping in 3-5
weeks
Celestron
Blocking Filters Skyris IR-Cut Filter 1,25"
$ 33.90
ready for shipping in 1-2
weeks
Astronomik
Blocking Filters Infrared cutting filter, T2
$ 103.00
ready for shipping in 24
h
Astronomik
1.25" IR blocking filter
$ 68.00
ready for shipping in 24
h
Lumicon
Infrared blocking filter 1.25''
$ 264.00
ready for shipping in 24
h
Astronomik
Blocking Filters Infrared-cutting filter, SC
$ 161.00
ready for shipping in 24
h
DayStar
Blocking Filters UV/IR 2"
$ 218.00
ready for shipping in 3-6
months
Artesky
Blocking Filters IR-Cut 2"
$ 68.00
ready for shipping in 3-5
weeks
ZWO
Blocking Filters IR ASI D25
$ 34.90
ready for shipping in 3-5
weeks
Optolong
Blocking Filters UV/IR D=32mm CMOS
$ 44.90
ready for shipping in 1-2
weeks