Top Pick
Top Pick
Who it's for
- Exceptional Spectral Performance
- Superior Light Pollution Rejection
- Highly Durable and Stable Coatings
Who should skip it
- Premium Price Point
- Requires Longer Exposure Times
- Sensitivity to Fast Optics (f/ratio)
Key Specs
Filter Type
OIII
Size
31mm
Parfocal for systems f/4.0 or slower
Transmitted wavefront better than 0.25 waves/inch
Parallelism
less than 30 arcsec
Material
Glass
Connection Interface
1.25 inch, 2 inch
Accessory Type
Filter
Barrel Diameter
31.0 inches
Filter Type
Nebula
Still have a question?
Ask Metto anything about the Chroma OIII Narrowband Filter before you decide.
