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Classic Hydrogen-alpha Narrowband Filter Massive 50% Savings [qtvoSm8P]
$55.99
$179.99
-69%
DescriptionH-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter is required to separate H-Alpha from the SII doublet (671.6nm and 673.1nm).SpecificationsParf
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Classic Hydrogen-alpha Narrowband Filter Massive 50% Savings [qtvoSm8P]
Description
H-alpha filters are essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 656.3nm, a narrow-band emission filter is required to separate H-Alpha from the SII doublet (671.6nm and 673.1nm).
Specifications
- Parfocal for systems f/4.0 or slower
- Transmitted wavefront better than 0.25 waves/inch
- Parallelism: less than 30 arcsec
- Made in America
What Our Customers Say
Absolutely no complaints!
A very dependable purchase.
- Kyler K..
Absolutely no complaints!
This is a very good buy.
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Absolutely no complaints!
Five stars! Works perfectly.
- Oliver R..
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