ZWO 2" SHO Narrowband Filters

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Filter
Filters	Ha: 653-660 nm, SII: 669-676 nm, OIII: 497-504 nm The above are estimations, please see the transmission curve for exact values.
Size	2"
Thread	M48 * 0.75
Transmission	90 %
Blocked Transmission	<0.1 % transmission of off-band, OD3
FWHM	7±0.5 nm
Infrared Cut-off	700-1100 nm
Optical flatness	1/4 lambda
Glass Thickness	1.85 mm
Total Thickness	7.5 mm

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