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Ships within 48 hours · Estimated delivery Aug 30 - Sep 4
Glass thickness: 1mm
read noise will drop below 2e but same dynamic range (13 stops)
6nm filters are the best choice for observing sites with extremely strong light pollution
compatible with almost all 3
ZWO 2" H-alpha 7nm Narrowband Filter pattern Glass thickness: 1mmZWO 2" H alpha 7nm Narrowband Filter The ZWO 2" H alpha 7nm Narrowband Filter is designed to dramatically improve deep sky image contrast and detail by isolating the 656 nm hydrogen alpha emission linethe dominant wavelength emitted by many nebulae. By aggressively rejecting unwanted wavelengths, this filter suppresses light pollution, moonlight, and sky glow, allowing faint nebulosity to stand out cleanly against a dark background. The result is
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