This general adapter was designed to ease the adaptation of Baader's 2" filters onto most camera lenses. You can use it to convert from the ASTRO-2" Standard (M48) into a more common photo-standard of SP54 mm. Individual lens adapters for most camera-lens threads are available to fit onto this filter holder. Larger lens threads may be utilized by adding another 62 mm stepper-ring.
How It Works:
The lens thread adapter (M62, M55, or M49) fastens onto the camera lens. Next is the filter holder DSLR-2. Lastly is any 2" (M48) Baader filter that will thread onto the assembly.
- Optical Length: 5 mm
- Inner Diameter / Clear Aperture: 47 mm
- Outer Diameter: 56 mm
- Inner Connection (Lens Sided): Thread, 2" (50.8 mm)
- Inner Connection (Eyepiece / Camera-Sided): Thread, M48
- Outer Connection (Eyepiece / Camera-Sided): Thread, SP54