Chroma Technology 3nm/5nm/8nm H-alpha Filters (27001/27002/27003)
Chroma Technology 3nm/5nm/8nm H-alpha Filters (27001/27002/27003)
Other Options
$561 3nm (CT-27001) / 50x50mm Unmounted (-50X50)
$1,506 3nm (CT-27001) / 2" Mounted (-2M)
$1,481 5nm (CT-27002) / 2" Mounted (-2M)
$1,359 5nm (CT-27002) / 50x50mm Unmounted (-50X50)
$1,341 3nm (CT-27001) / 50mm Unmounted (-50D)
$1,215 5nm (CT-27002) / 50mm Unmounted (-50D)
$899 8nm (CT-27003) / 2" Mounted (-2M)
$777 8nm (CT-27003) / 50x50mm Unmounted (-50X50)
$769 8nm (CT-27003) / 50mm Unmounted (-50D)
$759 3nm (CT-27001) / 36mm Unmounted (-36D)
$755 3nm (CT-27001) / 31mm Unmounted (-31D)
$608 5nm (CT-27002) / 36mm Unmounted (-36D)
$604 5nm (CT-27002) / 31mm Unmounted (-31D)
$453 5nm (CT-27002) / 1.25" Mounted (-1.25M)
$450 8nm (CT-27003) / 36mm Unmounted (-36D)
$345 8nm (CT-27003) / 31mm Unmounted (-31D)
$270 8nm (CT-27003) / 1.25" Mounted (-1.25M)
$259
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Product 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
3nm Transmission Curve
5nm Transmission Curve
8nm Transmission Curve
Note: All transmission and blocking (OD) data are actual, measured spectra of representative production lots. Spectra varies slightly from lot to lot. Optical density values in excess of 6 may appear noisy because such evaluations push the resolution limit of low light level measurements.
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