Deep Space Products carries the full range of Chroma filter sizes to match your camera and filter wheel. Contact us to discuss which configuration fits your imaging train.

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H-alpha Center Wavelength	656.3nm
H-alpha Bandwidth (FWHM)	3nm
H-alpha Peak Transmission	>95%
Substrate Thickness	3.0mm single substrate
Substrate Type	Single substrate optical glass (no lamination)
Cell Height (mounted versions)	7mm
Thread Specification (2" mounted)	M48×0.75
Available Sizes	1.25" mounted, 2" mounted, 31mm, 36mm, 50mm round, 50×50mm square
Minimum Focal Ratio	f/4 standard (custom f/2 available)
Coating Type	Hard sputtered front + anti-reflection rear
Parfocal	Yes (within set)
Temperature/Humidity Stability	Spectrally stable through environmental extremes
Manufacturer Certifications	ISO 9001, B Corporation
Warranty	Lifetime warranty against defects; satisfaction guarantee