Top Pick
Top Pick
Who it's for
- Exceptional Optical Performance
- Superior Light Pollution Rejection
- Large Format Compatibility
Who should skip it
- Premium Price Point
- Extended Exposure Times Required
- Potential for Internal Reflections
Key Specs
Filter Shape
Square
Filter Type
SII
Size
50mm
Parfocal for systems f/4.0 or slower
Transmitted wavefront better than 0.25 waves/inch
Parallelism
less than 30 arcsec
Material
Glass
Accessory Type
Filter
Filter Type
Nebula
Still have a question?
Ask Metto anything about the Chroma SII Narrowband Filter before you decide.
