1.25″ O-III (Oxygen 3) Filter
Includes plastic case for storage
Local Australian Delivery – NOT “dropshipped”
This is a line filter – very narrow bandpass centered on green doubly ionized oxygen emission lines. It has the highest contrast and maximum blocking of light pollution, so it perfect for the light polluted backyard. It is good for planetary benulas and super-nova remnants. It is particularly suited to fast focal-ratio telescopes.
|Dimensions||8 × 7 × 2.5 cm|
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