Spectrum Solar Filter

This filter is designed to fit telescope tubes with an outside diameter between 203 mm and 210 mm. Before purchasing, measure the outside diameter of your telescope's optical tube to ensure it falls within this specific range.

Because this is a full-aperture glass filter, it utilizes the entire opening of your telescope to provide maximum resolution. You will see a crisp, steady, yellowish-orange image of the sun, which is ideal for observing sunspots and solar granulation.

Yes, the filter features a durable aluminum cell equipped with felt padding and nylon thumb screws. These allow you to create a snug, customized fit that holds the filter firmly in place on your telescope tube.

To maintain the integrity of the reflective coatings, keep the glass surface clean and free of fingerprints. The filter arrives in a foam-lined box, which is the best place to store it when not in use to protect it from dust and accidental damage.

Absolutely. The high-quality glass and reflective coatings are suitable for both visual observation and solar astrophotography. Just ensure your camera setup is properly balanced and secured to the telescope.