ZWO Methane Band Filter 1.25 inches

ZWO Methane Band Filter 1.25 inches is a narrow-band interference filter developed specifically for infrared-sensitive astro cameras in planetary photography. By placing the passband exactly on the absorption line of methane (CH₄), you can take sharp contrast images of gas giants such as Jupiter and Saturn. Visual use is not possible; this filter is designed for photographic applications.

Key benefits
✓ Spectacular contrast enhancement on gas giants due to narrow half-value bandwidth of 200 Å
✓ Ideal for infrared cameras - blocks visible light and lets only methane band through
✓ Interference technology for clean passband and minimal leakage
✓ Easy to mount in 1.25-inch filter holder or filter wheel
✓ Receive striking details in cloud bands and storms on Jupiter and Saturn

Practical application
Use this filter in conjunction with an IR-sensitive ZWO ASI camera and a motorized filter wheel for automatic filter changes. Its focus on methane absorption allows you to capture deeper contrasts in the atmosphere of gas planets, which is not possible with standard visual filters.

Technical specifications
- Filter type: Methane band interference filter
- Size: 1.25 inches (31 mm)
- Half-value bandwidth: 200 Å
- Passband: CH₄-absorption line
- Application: Photographic (not usable visually)
- Mounting: 1.25-inch thread