Infrared Transmission HD 1.25 Inch Filter IR800 Astronomical Telescope Accessories 31.7mm Nebula Filter

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Not only can it be used for shooting, but it can also be directly visualized:

IR800 infrared transmission filter – Shield the interference of visible light, can only pass through infrared light with a wavelength of 800nm or above, and can observe celestial bodies in infrared. Due to the absence of visible light interference, the edge effect is clearer and almost unaffected by visible light scattering and diffusion. The visual effect is stunning.

For example, when looking at a person’s fingers through a filter, it may not be visible, but the phone lens can capture them clearly.

The visual method is the same as a regular filter, which is directly screwed onto the eyepiece and has a stunning effect. Simple tests can be conducted by observing the moon.