Antlia M48 Adapter with Quad Band Anti-Light Pollution Filter for Sony E cameras (Antlia) connects a Sony E-mount camera to an M48 × 0.75 interface, allowing it to be attached to a suitably terminated astrophotography imaging train. The Quad Band filter installed in the adapter suppresses selected artificial-lighting bands while transmitting useful visible, near-ultraviolet and near-infrared ranges. The construction provides a distance of 55 mm from the camera sensor to the M48 interface plane.

Key features

• combination of a Sony E camera adapter and light-pollution filter in one component
• M48 × 0.75 interface designed for use with suitably terminated astrophotography imaging-train components
• 55 mm distance from the camera sensor to the M48 interface plane
• multi-band transmission characteristics covering visible light, near-ultraviolet and near-infrared
• high transmission of the important Hα, SII, OIII, H-beta and NII emission lines
• suppression of selected artificial-lighting components, including part of the radiation from sodium lamps and LED sources
• suitable for imaging galaxies, emission and reflection nebulae, and star clusters
• broad transmission bands designed for use with optical systems as fast as f/2
• filter characteristics suitable for use with colour and monochrome sensors
• near-infrared transmission best utilised by cameras without a UV/IR-cut filter

Set contents

• Antlia M48 adapter for Sony E cameras with Quad Band Anti-Light Pollution Filter

Technical specifications

• product type: camera adapter with light-pollution filter
• camera mount: Sony E
• telescope-side interface: M48 × 0.75
• distance from the sensor to the M48 interface plane: 55 mm
• filter type: Quad Band Anti-Light Pollution multi-band filter
• transmitted spectral ranges: visible light, near-ultraviolet and near-infrared
• Hα wavelength: 656.3 nm
• SII wavelengths: 671.6 nm and 673.1 nm
• OIII wavelengths: 495.9 nm and 500.7 nm
• H-beta wavelength: 486.1 nm
• NII wavelengths: 654.8 nm and 658.3 nm
• peak transmission: over 92% for Hα, SII, OIII and H-beta; 92% for NII
• out-of-band blocking: at least OD4 over the 300–1050 nm range
• filter substrate thickness: 2 ± 0.05 mm
• compatible optical-system focal ratio: down to f/2
• application: deep-sky astrophotography
• suitable for visual observation: no
• suitable for solar imaging: no

The Antlia adapter allows a Sony E camera to be connected to an M48 astrophotography imaging train while reducing the effects of light pollution, combining adapter and filter functions in one component.