Top Pick
Top Pick
Who it's for
- Ultra-Narrow Bandwidth (5nm)
- Superior Optical Coating Quality
- Optimized for Advanced Imaging Setups
Who should skip it
- Premium Price Point
- Demanding Exposure Requirements
- Sensitivity to Fast Optics (f/ratio)
Key Specs
Filter Shape
Round
Filter Type
SII
Size
31mm
Parfocal for systems f/4.0 or slower
Transmitted wavefront better than 0.25 waves/inch
Parallelism
less than 30 arcsec
Made in the U.S.A.
Material
Glass
Accessory Type
Filter
Filter Type
Nebula
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