Optolong H-alpha 3nm 2" | PixelSkiesAstro
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  • Optolong H-alpha 3nm 2" | PixelSkiesAstro

Optolong H-alpha 3nm 2"

€389.00
Tax included

Optolong H-alpha 3nm filter 2" Optolong's H-alpha 3 nm narrowband filter passes a 3 nm band centred on 656 nm for high-contrast hydrogen-alpha imaging with monochrome cameras or modified DSLRs, rejecting mercury and sodium lighting and natural skyglow.

Manufacturer model: Optolong H-alpha 3nm 2" · Specifications checked against manufacturer data on 2026-11-03

Optolong H-alpha 3nm filter 2"

Optolong's H-alpha 3 nm narrowband filter passes a 3 nm band centred on 656 nm for high-contrast hydrogen-alpha imaging with monochrome cameras or modified DSLRs, rejecting mercury and sodium lighting and natural skyglow.

Specifications

Format 2" mounted
Bandwidth 3 nm
Centre wavelength 656 nm
Use Monochrome CCD/CMOS cameras and modified DSLRs

Coating

Multi-layer anti-reflection coating on a non-cemented substrate, applied by ion-assisted deposition for durability and a stable centre wavelength with temperature.

Manufacturer documentation

Optolong H-alpha 3nm 2"

Compatibility notes

Single 2in mounted 3nm filter from the SHO-3nm range.

Additional specifications

Centre wavelength656 nm
73721

Data sheet

Bandwidth
3 nm
Format
2" mounted
Use
Monochrome CCD/CMOS cameras and modified DSLRs
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