
Spectrum Full-Aperture Glass Solar Filter 4.00" ID – ST400G
Spectrum Full-Aperture Glass Solar Filter 4.00" ID – ST400G is designed for safe, full-aperture solar observation through compatible telescopes. The premium glass filter helps produce a natural yellow-orange solar image for viewing sunspots, eclipse phases, and solar detail.
- Full-aperture glass solar filter
- Aluminum cell with nylon thumb screw and felt padding
- Designed to slip over the front of the optical tube
- Use the filter ID / internal diameter to select the correct fit
Fit note: Measure the outside diameter of your telescope tube and order the next larger filter size for a secure fit.
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Spectrum Full-Aperture Glass Solar Filter 4.00" ID – ST400G
Sale price$106.95
