Chroma Technology Jovian Methane Filter

This filter isolates the 889nm methane absorption band, which causes methane-rich areas in a planet's atmosphere to appear significantly darker. By increasing the contrast between these features and the surrounding cloud structures, it allows you to resolve atmospheric details that are otherwise washed out.

Yes, the filter is available in both mounted and unmounted formats to fit standard 1.25-inch and 2-inch filter wheels, as well as various unmounted sizes like 31mm, 36mm, and 50mm. Be sure to check your specific filter wheel's requirements before selecting the mounting type.

While it is specifically optimized for the methane-rich atmospheres of Jupiter and Saturn, it can be used for any object with significant methane absorption in its atmosphere. However, it is not intended for general-purpose lunar or deep-sky imaging.

Unlike standard filters, this unit uses high-grade optical glass with sputtered hard coatings. These coatings are exceptionally durable and resistant to environmental wear, ensuring the filter maintains its precision and anti-reflective properties over long-term use.

You need a camera that is sensitive to the near-infrared spectrum, specifically around 889nm. Many dedicated planetary CMOS cameras have sufficient sensitivity in this range, but you should verify your camera's spectral response curve to ensure it can capture light at this wavelength.