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Observing the Sun with an optical instrument is extremely dangerous. The concentrated energy from the Sun damages the human eye or a camera. Therefore, there is a wide range of filters available that reduce the light from the Sun. Generally, any telescope with a closed tube (i.e. not a truss-tube) can be converted into a solar telescope.

Filters can be distinguished between those that are mounted in front of the telescope lens and those that are attached to the front of the eyepiece. The former is especially safe, because dangerous radiation does not enter the telescope at all.

Another distinction is whether the filter simply reduces the light, or whether it allow only certain spectral lines to pass through. The first variant is also called a white light filter. These filters preserve the natural view of the Sun and enable the photosphere with its sunspots to be observed. The second variant is usually seen in H-Alpha filters. These allow only a certain wavelength of hydrogen atoms to pass through, and show the structures of the Sun's chromosphere.

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Baader Sun filter foil AstroSolar® ECO-size OD 5.0 140x155mm
Baader
Sun filter foil AstroSolar® ECO-size OD 5.0 140x155mm
( 5 / 5 )
$ 26.90
ready for shipping in 24 h
Baader Sun filter foil 20 x 29 cm
Baader
Sun filter foil 20 x 29 cm
( 5 / 5 )
$ 33.90
ready for shipping in 24 h
Omegon solar filter, 60-80mm
Omegon
solar filter, 60-80mm
$ 19.90
ready for shipping in 24 h
Astroprints Solar Filters ZWO Seestar S50
Astroprints
Solar Filters ZWO Seestar S50
$ 35.90
ready for shipping in 24 h
Omegon solar filter, 130mm
Omegon
solar filter, 130mm
$ 24.90
ready for shipping in 24 h
Baader AstroSolar Photo Film OD 3.8
Baader
AstroSolar Photo Film OD 3.8
$ 39.90
ready for shipping in 24 h
Omegon solar filter, 150mm (6'')
Omegon
solar filter, 150mm (6'')
( 4 / 5 )
$ 59.00
Product can be shipped as of 01.08.2025
Omegon solar filter, 90mm
Omegon
solar filter, 90mm
$ 24.90
ready for shipping in 24 h
Omegon solar filter, 114mm
Omegon
solar filter, 114mm
( 4 / 5 )
$ 24.90
ready for shipping in 24 h
Explore Scientific Solarix solar filter foil with DIN A4 and ND5 cutout sheets
Explore Scientific
Solarix solar filter foil with DIN A4 and ND5 cutout sheets
$ 33.90
ready for shipping in 24 h
Unistellar Solar Filters Smart eQuinox/eVscope
Unistellar
Solar Filters Smart eQuinox/eVscope
$ 292.00
ready for shipping in 24 h
Omegon 173mm-193mm solar filter
Omegon
173mm-193mm solar filter
$ 89.00
ready for shipping in 24 h
Omegon 138mm-153mm solar filter
Omegon
138mm-153mm solar filter
$ 69.00
Product can be shipped as of 01.08.2025
Vaonis Solar Filters VESPERA
Vaonis
Solar Filters VESPERA
$ 210.00
ready for shipping in 24 h
DayStar Combo QUARK H-Alpha solar filter, for chromosphere
DayStar
Combo QUARK H-Alpha solar filter, for chromosphere
$ 1,800.00
ready for shipping in 24 h
euro EMC SF100 size 6: 129mm to 157mm AstroSolar
euro EMC
SF100 size 6: 129mm to 157mm AstroSolar
$ 95.00
ready for shipping in 24 h
Artesky Solar Filters 95mm
Artesky
Solar Filters 95mm
$ 65.00
ready for shipping in 24 h
Lunt Solar Systems 1.25" Herschel wedge with ND3.0 filter LS1.25HW
Lunt Solar Systems
1.25" Herschel wedge with ND3.0 filter LS1.25HW
$ 269.00
ready for shipping in 24 h
Lunt Solar Systems Filters Double-Stack Filter DSII for Solar telescopes LS80MT & LS100MT
Lunt Solar Systems
Filters Double-Stack Filter DSII for Solar telescopes LS80MT & LS100MT
$ 4,330.00
ready for shipping in 1-2 weeks
euro EMC SF100 size 4: 83mm to 105mm AstroSolar
euro EMC
SF100 size 4: 83mm to 105mm AstroSolar
$ 67.00
ready for shipping in 24 h
euro EMC SF100 Size 5: 103mm to 131mm AstroSolar
euro EMC
SF100 Size 5: 103mm to 131mm AstroSolar
$ 82.00
ready for shipping in 24 h
Unistellar Solar Filters Odyssey/Odyssey Pro
Unistellar
Solar Filters Odyssey/Odyssey Pro
$ 234.00
ready for shipping in 24 h
euro EMC SF100 size 7 for 155mm to 189mm AstroSolar
euro EMC
SF100 size 7 for 155mm to 189mm AstroSolar
$ 113.00
ready for shipping in 24 h
Artesky Solar Filters 115mm
Artesky
Solar Filters 115mm
$ 81.00
ready for shipping in 24 h
Explore Scientific Sun Catcher solar filter for 229-254mm (9"-10") SCs
Explore Scientific
Sun Catcher solar filter for 229-254mm (9"-10") SCs
RRP:  $ 71.00
Our price:
$ 35.90
ready for shipping in 1-2 weeks
Lunt Solar Systems Filters Double-Stack Filter DSII for Solar telescope LS130MT Ha
Lunt Solar Systems
Filters Double-Stack Filter DSII for Solar telescope LS130MT Ha
$ 6,800.00
ready for shipping in 1-2 weeks
Explore Scientific Sun Catcher solar filter for 80-102mm telescopes
Explore Scientific
Sun Catcher solar filter for 80-102mm telescopes
$ 32.90
ready for shipping in 24 h
TS Optics Solar Prism with Polarizing and Narrowband Filter 1,25"
TS Optics
Solar Prism with Polarizing and Narrowband Filter 1,25"
( 2.5 / 5 )
$ 187.00
ready for shipping in 3-7 days
DayStar QUARK H-alpha filter, prominences
DayStar
QUARK H-alpha filter, prominences
$ 1,800.00
ready for shipping in 24 h
Meade Filters Glass Solar Filter 1200
Meade
Filters Glass Solar Filter 1200
$ 444.00
ready for shipping in 24 h
euro EMC Solar Filters SF100 size 10: 269mm to 327mm Thousand Oaks
euro EMC
Solar Filters SF100 size 10: 269mm to 327mm Thousand Oaks
$ 177.00
ready for shipping in 24 h
DayStar Filters 0.5Å H-alpha Quantum PE filter
DayStar
Filters 0.5Å H-alpha Quantum PE filter
$ 30,600.00
ready for shipping in 3-6 months
euro EMC Solar Filters SF100 size 9: 215mm to 273mm Thousand Oaks
euro EMC
Solar Filters SF100 size 9: 215mm to 273mm Thousand Oaks
$ 155.00
ready for shipping in 24 h
Baader AstroSolar solar filter for ASBF 100mm binoculars
Baader
AstroSolar solar filter for ASBF 100mm binoculars
$ 78.00
ready for shipping in 1-2 weeks
Lunt Solar Systems Filters B3400 Blocking-Filter in 2" extension tube
Lunt Solar Systems
Filters B3400 Blocking-Filter in 2" extension tube
$ 4,100.00
ready for shipping in 1-2 weeks
Lunt Solar Systems Solar Filters Ca-K-Module for LS130MT/B3400
Lunt Solar Systems
Solar Filters Ca-K-Module for LS130MT/B3400
$ 4,100.00
ready for shipping in 1-2 weeks
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