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Antlia 3.5nm Narrowband H-alpha

testar.com.au/.../antlia-ha-3-5nm-ultra-narrowband-filter-36mm

Frozen as ambiguous

Type	Hydrogen-alpha (Hα)
Size	Other
Bandwidth	3.5 nm
Users	305
Images	2063
Most often used with	ZWO ASI294MM Pro

Also available in the following variants:

1.25"

36 mm

50 mm