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Optolong
SII 6.5nm
optolong.com/.../68.html
Frozen as ambiguous
Type
Sulfur-II (SII)
Size
Other
Bandwidth
6.5 nm
Users
579
Images
3254
Most often used with
ZWO
ASI294MM Pro
More
Known retailers
High Point Scientific
Also available in the following variants:
1.25"
2"
31 mm
36 mm
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