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Optolong SHO-3nm narrowband filter kit 2"
Optolong's SHO-3nm kit combines SII, H-alpha and OIII 3 nm narrowband filters for Hubble-palette imaging with monochrome cameras. The narrow bands reject mercury and sodium lighting and skyglow for high contrast even from light-polluted sites.
Specifications
Format
3 × 2" mounted
Kit contents
SII 3 nm, H-alpha 3 nm (656 nm), OIII 3 nm (500 nm)
Bandwidth
3 nm each
Use
Monochrome CCD/CMOS cameras and modified DSLRs, one channel per filter
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 SHO-3nm kit 2"
Compatibility notes 2in mounted kit, not 36 mm unmounted.
Additional specifications Kit contents SII 3 nm, H-alpha 3 nm (656 nm), OIII 3 nm (500 nm)
Reference
73684
Data sheet
Bandwidth
3 nm each
Format
3 × 2" mounted
Use
Monochrome CCD/CMOS cameras and modified DSLRs, one channel per filter
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Optolong SHO-3nm narrowband filter kit 2" Optolong's SHO-3nm kit combines SII, H-alpha and OIII 3 nm narrowband filters for Hubble-palette imaging with monochrome cameras. The narrow bands reject mercury and sodium lighting and skyglow for high contrast even from light-polluted sites.
Manufacturer model: Optolong SHO-3nm kit 2" · Specifications checked against manufacturer data on 2026-11-03
