Narrow Band Oxygen III Nebula Filter - 1.25" and 2" sizes
These are very similar to a standard Oxygen 3 filter, but with
slightly wider bandwidth, and almost no transmission of the
640nm and higher lines that are common in other O3 filters.
The bandpass cutoff lines are very steep and transmission is
very high, common in high quality filters. Don't be fooled by
the price, these premium filters compare very well to the big
names. Standard 1.25" or 2" threads fit eyepieces and diagonals.
Made in Japan.
Prices include shipping in the USA!
Ordering Information
Typical Transmission Values:
30% 486nm Hydrogen-Beta
97% 496nm Oxygen III
97% 501nm Oxygen III
<2% 546nm Hg
<2% 570nm Na2
<2% 579nm Hg
<2% 583nm Na2
<2% 600nm Na2
<2% 656nm Hydrogen-Alpha
Transmission Curves Are Here!
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