Astronomik L-2 UV-IR Block 2" (M48) (SKU: 10162200 / 8h00pl)

Astronomik L-2 UV-IR Block 2", M48 (Astronomik, SKU: 10162200) is a luminance filter that blocks ultraviolet and infrared light when recording visible light. The L-2 version has the intermediate spectral window in the L-1/L-2/L-3 series and is intended for well-corrected APO refractors and doublets at their native focal length, and reflecting telescopes with a reducer.

Key features

• ultraviolet and infrared rejection when recording the luminance channel
• passband width matched to the optical system’s colour correction
• coatings using Astronomik MFR technology that reduce unwanted reflections
• threaded cell for compatible 2" accessories with an M48 thread
• durable coatings resistant to scratches and moisture

Included items

• filter, Astronomik L-2 UV-IR Block 2", M48
• protective filter box

Technical specifications

• manufacturer: Astronomik
• manufacturer SKU: 10162200
• type: UV-IR Block luminance filter
• version: L-2
• spectral window within the series: intermediate
• transmitted spectral region: visible light
• rejected regions: ultraviolet and infrared
• coatings: Astronomik MFR
• cell: threaded 2"
• thread: M48 × 0.75
• cell height excluding male thread: 4.5 mm
• male thread length: 2.6 mm
• glass thickness: 1 mm
• parfocality: with standard Astronomik filters using 1 mm glass
• country of manufacture: Germany

Choosing the appropriate luminance version helps make use of the optics’ correction when recording image detail.