Above image shows:
Oxygen III Filter, 48mm
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List of all products made by
Lumicon
Manufactured by: Lumicon
The renowned, original Lumicon OIII narrow bandpass filter (11nm) isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light. The result is ex (read more)
