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Astronomik H-beta

astronomik.com/.../h-beta-filter-visuell.html
Frozen as ambiguous
TypeHydrogen-beta (Hβ)
SizeOther
Bandwidthn/a
Users 5
Images 7
Most often used with

There doesn't seem to be anything here.

Also available in the following variants:
1.25"
2"
SCT