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Optolong OIII 6.5nm

optolong.com/.../62.html
Frozen as ambiguous
TypeOxygen-III (OIII)
SizeOther
Bandwidth6.5 nm
Users 594
Images 4069
Most often used with
ZWO ASI294MM Pro
Known retailers High Point Scientific
Also available in the following variants:
1.25"
2"
31 mm
36 mm