Astronomik ProPlanet 742 50mm (SKU: 10225050 / 8h00g6)

Astronomik ProPlanet 742 50 mm, with protective ring (Astronomik, SKU: 10225050) is a long-pass filter for near-infrared imaging, with a passband starting at 742 nm. In lunar and planetary photography it records wavelengths less affected by atmospheric turbulence than shorter wavelengths.

Key features

• records near-infrared images
• reduces the effects of seeing in lunar and planetary photography
• enables daylight IR photography with a suitably modified camera
• ring protects the glass edge during installation in a filter wheel
• durable coatings resistant to scratches and moisture

Included items

• filter, Astronomik ProPlanet 742 50 mm, with protective ring
• protective filter box

Technical specifications

• manufacturer: Astronomik
• manufacturer SKU: 10225050
• type: IR long-pass filter
• range with transmission above 96%: 742–1100 nm
• blocked short-wavelength range: 350–730 nm
• requirements: camera sensitive within the transmitted band
• shape: round
• nominal size: 50 mm
• construction: protective ring, without a screw thread
• mechanical thickness including ring: 3 mm
• glass thickness: 1 mm
• parfocality: with standard Astronomik filters using 1 mm glass
• country of manufacture: Germany

Infrared recording helps reveal lunar and planetary detail when seeing is less favourable.