| URL | Priority | Change frequency | Last modified (GMT) |
|---|---|---|---|
| https://spectrumtelescope.com/product-category/thin-film-sheets/ | 30% | Weekly | |
| https://spectrumtelescope.com/product-category/the-universal-mobile-phone-telescope-kit/ | 30% | Weekly | |
| https://spectrumtelescope.com/product-category/thin-film-solar-filters/ | 30% | Weekly | |
| https://spectrumtelescope.com/product-category/threaded-camera-solar-filters/ | 30% | Weekly |