Astronomik infrared (IR) pass filters

Astronomik infrared (IR) pass filters enable high-resolution lunar and planetary imaging, daylight IR-photography and, in the case of the Astronomik ProPlanet 642 BP filter, also deep-sky astrophotography of H-alpha nebulae.

We offer three different Astronomik infrared pass filters that allow IR light to pass through above graduated wavelengths: 642nm, 742nm and 807nm.

High-resolution lunar and planetary imaging

The poorer the seeing, the more sensible it is to suppress shorter wavelengths. The Astronomik ProPlanet 642 BP and 742 filters have proven to be particularly effective here, as they enable improved image quality even under difficult conditions. The Astronomik ProPlanet 807 filter blocks even more disturbing light, but requires a large telescope with at least 10" (250mm) aperture to collect sufficient light due to its strong filtering effect.

Daylight IR-photography

The Astronomik ProPlanet 742 filter is the filter that best emphasises the "Wood-Effect". The Astronomik ProPlanet 642 BP filter also shows the "Wood-Effect" well. It additionally reduces the hot spots caused by longer wavelength IR light when using lenses that are unfavourably coated for IR light.

Deep-sky astrophotography of H-alpha nebulae

The Astronomik ProPlanet 642 BP filter is also an inexpensive filter for entry-level H-alpha photography with astro-modified DSLR and system cameras.

Detailed insights into each filter’s specific applications can be found on the individual product pages.