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Spectrum Thread-On Solar Film Filter for 37 mm Camera Lens

Spectrum 37 mm Threaded Optical Solar Film Filter - ST-37MM

SKU: SPR-ST-37MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$49.00
 
Spectrum Telescope Thread-On Solar Film Filter for 40.5 mm Camera Lens

Spectrum 40.5 mm Threaded Optical Solar Film Filter - ST-40.5MM

SKU: SPR-ST-40.5MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$49.00 $39.20
 
Spectrum Telescope Threaded Optical Solar Film Filter for 43 mm Camera Lens

Spectrum 43 mm Threaded Optical Solar Film Filter - ST-43MM

SKU: SPR-ST-43MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$49.00 $39.20
 
Spectrum Telescope Thread-On Solar Film Filter for 46 mm Camera Lens

Spectrum 46 mm Threaded Optical Solar Film Filter - ST-46MM

SKU: SPR-ST-46MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$49.00 $39.20
 
Spectrum 49 mm Threaded Camera Solar Film Filter

Spectrum 49 mm Threaded Optical Solar Film Filter - ST-49MM

SKU: SPR-ST-49MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$49.00 $39.20
 
Spectrum 52 mm Threaded Camera Solar Film Filter

Spectrum 52 mm Threaded Optical Solar Film Filter - ST-52MM

SKU: SPR-ST-52MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$52.00 $41.60
 
Spectrum Telescope Thread-On Solar Film Filter for 55 mm Camera Lenses

Spectrum 55 mm Threaded Optical Solar Film Filter - ST-55MM

SKU: SPR-ST-55MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$52.00 $41.60
 
Spectrum 58 mm Thread-On Solar Film Filter

Spectrum 58 mm Threaded Optical Solar Film Filter - ST-58MM

SKU: SPR-ST-58MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$52.00
 
Spectrum Telescope 62 mm Thread-On Solar Film Filter

Spectrum 62 mm Threaded Optical Solar Film Filter - ST-62MM

SKU: SPR-ST-62MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$55.00
 
Spectrum Threaded Optical Solar Film Filter - 67 mm

Spectrum 67 mm Threaded Optical Solar Film Filter - ST-67MM

SKU: SPR-ST-67MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$55.00 $44.00
 
Spectrum Telescope 72 mm Thread-On Solar Film Filter

Spectrum 72 mm Threaded Optical Solar Film Filter - ST-72MM

SKU: SPR-ST-72MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$69.00
 
Spectrum Thread-On Optical Solar Film Filter for 77 mm Camera Lens

Spectrum 77 mm Threaded Optical Solar Film Filter - ST-77MM

SKU: SPR-ST-77MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$69.00 $55.20
 
Spectrum Telescope 82 mm Thread-On Solar Film Filter

Spectrum 82 mm Threaded Optical Solar Film Filter - ST-82MM

SKU: SPR-ST-82MM
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Mylar Film
$69.00 $55.20
 
Spectrum Full Aperture Glass Solar Filter for 51 mm - 57 mm OD Telescopes

Spectrum Full Aperture Glass Solar Filter for 51 mm - 57 mm OD Telescopes - ST250G

SKU: SPR-ST250G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 2" (51 mm)
  • Filter Maximum Outside Diameter: 2.24" (57 mm)
$62.00
 
Spectrum 237 mm ID Full Aperture Glass Solar Filter

Spectrum Full Aperture Glass Solar Filter for 224 mm - 238 mm OD Telescopes - ST9312G

SKU: SPR-ST9312G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 8.81" (224 mm)
  • Filter Maximum Outside Diameter: 9.37" (238 mm)
$132.00
 
Spectrum Telescope Full Aperture Glass Solar Filter for 111 mm - 117 mm Outside Diameter Telescopes

Spectrum Full Aperture Glass Solar Filter for 111 mm - 117 mm OD Telescopes - ST475G

SKU: SPR-ST475G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 4.37" (111 mm)
  • Filter Maximum Outside Diameter: 4.60" (117 mm)
$82.00
 
Spectrum Telescope 127 mm ID Full Aperture Glass Solar Filter

Spectrum Full Aperture Glass Solar Filter for 117 mm - 124 mm OD Telescopes - ST500G

SKU: SPR-ST500G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 4.60" (117 mm)
  • Filter Maximum Outside Diameter: 4.88" (124 mm)
$82.00
 
Spectrum 133 mm ID Full Aperture Glass Solar Filter for 124 mm - 130 mm OD Telescopes

Spectrum Full Aperture Glass Solar Filter for 124 mm - 130 mm OD Telescopes - ST525G

SKU: SPR-ST525G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 4.88" (124 mm)
  • Filter Maximum Outside Diameter: 5.11" (130 mm)
$82.00
 
Spectrum Telescope ST575G Full Aperture Glass Solar Filter with 146 mm ID

Spectrum Full Aperture Glass Solar Filter for 137 mm - 143 mm OD Telescopes - ST575G

SKU: SPR-ST575G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 5.39" (137 mm)
  • Filter Maximum Outside Diameter: 5.63" (143 mm)
$102.00
 
Spectrum 152 mm ID Full Aperture Glass Solar Filter

Spectrum Full Aperture Glass Solar Filter for 143 mm - 149 mm OD Telescopes - ST600G

SKU: SPR-ST600G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 5.63" (143 mm)
  • Filter Maximum Outside Diameter: 5.86" (149 mm)
$102.00
 
Spectrum Telescope Full Aperture Glass Solar Filter for 149 mm - 156 mm Outside Diameter Telescopes

Spectrum Full Aperture Glass Solar Filter for 149 mm - 156 mm OD Telescopes - ST625G

SKU: SPR-ST625G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 5.86" (149 mm)
  • Filter Maximum Outside Diameter: 6.14" (156 mm)
$102.00
 
Spectrum Telescope Full Aperture Glass Solar Filter with 165 mm Inside Diameter

Spectrum Full Aperture Glass Solar Filter for 156 mm - 162 mm OD Telescopes - ST650G

SKU: SPR-ST650G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 6.14" (156 mm)
  • Filter Maximum Outside Diameter: 6.37" (162 mm)
$102.00
 
Spectrum 181 mm ID Full Aperture Glass Solar Filter

Spectrum Full Aperture Glass Solar Filter for 171 mm - 178 mm OD Telescopes - ST712G

SKU: SPR-ST712G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 6.73" (171 mm)
  • Filter Maximum Outside Diameter: 7" (178 mm)
$112.00
 
Spectrum 190 mm ID Full Aperture Glass Solar Filter

Spectrum Full Aperture Glass Solar Filter for 181 mm - 187 mm OD Telescopes - ST750G

SKU: SPR-ST750G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 7.12" (181 mm)
  • Filter Maximum Outside Diameter: 7.36" (187 mm)
$112.00
 
Spectrum Telescope Full Aperture Glass Solar Filter - 203 mm ID

Spectrum Full Aperture Glass Solar Filter for 194 mm - 199 mm OD Telescopes - ST800G

SKU: SPR-ST800G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 7.64" (194 mm)
  • Filter Maximum Outside Diameter: 7.83 (199 mm)
$112.00
 

Spectrum Telescope designs a full array of solar filters to suit your needs. This includes full aperture glass filters as well as threaded optical film filters. While a film filter is often a budget-friendly option, a glass filter is more sturdy; which type you choose depends on what you decide to use the Spectrum solar filter for. Both glass and film filters are white light solar filters. This means these are neutral density filters, and will not distort the colors visible. However, due to the nature of white light solar filters, over 99.99% of sunlight is blocked. These factors mean a white light filter will typically show the Sun white in color, although many show the Sun in a yellow-orange color that we are familiar with.


Although these filters block over 99.99% of the Sun’s harmful rays, they allow the full wavelength spectrum to shine through. This means you will see the Sun’s photosphere. The photosphere is often considered the easiest layer of the Sun to see because it generates the most amount of light. At this layer, you will be able to see sunspots, solar flares, and even granulation, the texture of the Sun’s surface.


Spectrum Telescope’s solar filters come in many sizes to fit your telescope or finderscope. You will find the full aperture glass filter anywhere from 41mm to 403mm. The threaded optical film filters are available in 37mm to 82mm sizes.


There are certain precautions you must take in order to safely view the Sun. Before viewing, always inspect your filters and accessories and do not use if there is any sign of damage. Older solar filters recommend discarding the product after 3 years, as the filter gradually loses its effectiveness. However, this is not the case for many modern Sun-viewing accessories. Always consult an expert to confirm if you can safely use your older solar filters.

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