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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 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
$49.95
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
$49.95 $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
$49.95 $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
$49.95 $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
$49.95 $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
$52.95
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
$52.95
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
$52.95
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
$55.95
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
$55.95
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
$69.95
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
$69.95
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 41 mm - 48 mm Outside Diameter Telescopes

Spectrum Full Aperture Glass Solar Filter for 41 mm - 48 mm OD Telescopes - ST200G

SKU: SPR-ST200G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 1.61" (41 mm)
  • Filter Maximum Outside Diameter: 1.89" (48 mm)
$76.95
Spectrum Full Aperture Glass Solar Filter for 48 mm - 54 mm OD Telescopes

Spectrum Full Aperture Glass Solar Filter for 48 mm - 54 mm OD Telescopes - ST225G

SKU: SPR-ST225G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 1.89" (48 mm)
  • Filter Maximum Outside Diameter: 2.12" (54 mm)
$76.95
Spectrum Telescope ST275G Full Aperture Glass Solar Filter

Spectrum Full Aperture Glass Solar Filter for 60 mm - 67 mm OD Telescopes - ST275G

SKU: SPR-ST275G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 2.36" (60 mm)
  • Filter Maximum Outside Diameter: 2.63" (67 mm)
$86.95
Spectrum Full Aperture Glass Solar Filter for 67 mm - 73 mm Outside Diameter Optical Tubes

Spectrum Full Aperture Glass Solar Filter for 67 mm - 73 mm OD Telescopes - ST300G

SKU: SPR-ST300G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 2.63" (67 mm)
  • Filter Maximum Outside Diameter: 2.87" (73 mm)
$86.95
Spectrum Telescope ST325G Full Aperture Glass Solar Filter

Spectrum Full Aperture Glass Solar Filter for 73 mm - 79 mm OD Telescopes - ST325G

SKU: SPR-ST325G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 2.87" (73 mm)
  • Filter Maximum Outside Diameter: 3.11" (79 mm)
$86.95
Spectrum Telescope ST350G Full Aperture Glass Solar Filter

Spectrum Full Aperture Glass Solar Filter for 79 mm - 86 mm OD Telescopes - ST350G

SKU: SPR-ST350G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 3.11" (79 mm)
  • Filter Maximum Outside Diameter: 3.38" (86 mm)
$86.95
Spectrum ST375G Full Aperture Glass Solar Filter - 95 mm ID

Spectrum Full Aperture Glass Solar Filter for 86 mm - 92 mm OD Telescopes - ST375G

SKU: SPR-ST375G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 3.38" (86 mm)
  • Filter Maximum Outside Diameter: 3.62" (92 mm)
$86.95
Spectrum 101 mm ID Full Aperture Glass Solar Filter

Spectrum Full Aperture Glass Solar Filter for 92 mm - 98 mm OD Telescopes - ST400G

SKU: SPR-ST400G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 3.62" (92 mm)
  • Filter Maximum Outside Diameter: 3.85" (98 mm)
$86.95
Spectrum ST425G 108 mm ID Full Aperture Glass Solar Filter

Spectrum Full Aperture Glass Solar Filter for 98 mm - 105 mm OD Telescopes - ST425G

SKU: SPR-ST425G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 3.85" (98 mm)
  • Filter Maximum Outside Diameter: 4.13" (105 mm)
$96.95
Spectrum Full Aperture Glass Solar Filter - 114 mm ID

Spectrum Full Aperture Glass Solar Filter for 105 mm - 111 mm OD Telescopes - ST450G

SKU: SPR-ST450G
  • Filtering Wavelength: White Light
  • White Light Solar Filter Material: Glass
  • Minimum Inside Diameter of Filter: 4.13" (105 mm)
  • Filter Maximum Outside Diameter: 4.37" (111 mm)
$96.95
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)
$96.95

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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