Antlia M48 Adapter with H-alpha 3nm Pro Filter for Sony E-Mount Cameras (Antlia, SKU: M48-H-alpha3-E) 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 integrated narrowband filter transmits hydrogen Hα emission at a wavelength of 656.3 nm while strongly suppressing light outside the passband. 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 H-alpha 3nm Pro filter in one component
• M48 × 0.75 interface designed for use with a suitably terminated astrophotography imaging train
• 55 mm distance from the camera sensor to the M48 interface plane
• narrow transmission band with a 3 nm FWHM, centred on the hydrogen Hα line
• high Hα signal transmission with effective suppression of out-of-band radiation
• improved contrast of emission-nebula structures and reduced background brightness
• suitable for imaging from light-polluted areas and when the Moon is present
• transmission characteristics allowing use with optical systems as fast as f/3
• steep band profile reducing halo formation around bright stars
• designed for imaging objects emitting radiation in the Hα line

Set contents

• Antlia M48 adapter for Sony E-mount cameras with integrated H-alpha 3nm Pro Filter

Technical specifications

• product type: camera adapter with integrated narrowband filter
• camera mount: Sony E
• telescope-side interface: M48 × 0.75
• distance from the sensor to the M48 interface plane: 55 mm
• filter type: H-alpha Pro
• transmitted emission line: Hα
• central wavelength: 656.3 nm
• FWHM bandwidth: 3 nm
• transmission within the central passband: over 88%
• out-of-band blocking: OD5
• compatible optical-system focal ratio: down to f/3
• application: astrophotography of emission nebulae, planetary nebulae, Wolf-Rayet objects and supernova remnants
• suitable for visual observation: no
• suitable for solar imaging: no
• SKU: M48-H-alpha3-E

The Antlia adapter allows a Sony E-mount camera to be connected to an M48 astrophotography imaging train while isolating the narrowband Hα signal without requiring a separate filter holder.