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Antlia 3.5nm Narrowband Oxygen III

optcorp.com/.../antlia-filters-o-iii-3-5-nm-filter-1-25-inch
Frozen as ambiguous
TypeOxygen-III (OIII)
SizeOther
Bandwidth3.5 nm
Users 287
Images 1818
Most often used with
ZWO ASI294MM Pro
Also available in the following variants:
1.25"
2"
36 mm
50 mm