Chroma SHO 3nm Filter Set - 2" Mounted
Chroma
Chroma 3 nm Narrowband Filters is a Premium narrowband filter set in Common mounted and unmounted astronomy sizes for mono emission-line imaging.
Best Current Offer
Specifications
Filter
- Filter type
- SHO narrowband filter set
- Filter size
- 2" Mounted
Spectral
- Passbands
- H-alpha 656.3 nm (3 nm) / OIII 500.7 nm (3 nm) / SII 672 nm (3 nm)
- Band count
- 3 bands
- Narrowest bandpass
- 3 nm
- Blocking
- High out-of-band blocking for faint emission-line imaging
Construction
- Substrate / coating
- Premium hard-coated narrowband filters
Use
- Camera use
- Mono astronomy cameras
- Best for
- High-contrast SHO and emission-line nebula imaging
- Fast optics note
- Use fast-system variants where appropriate for very fast optical trains
Astrophotography Fit
Best for isolating emission lines with a mono camera and filter wheel.
Chroma 3 nm Narrowband Filters is a flagship Premium narrowband filter set (Common mounted and unmounted astronomy sizes). Passbands: H-alpha 656.3 nm (3 nm) / OIII 500.7 nm (3 nm) / SII 672 nm (3 nm).
Best for isolating emission lines with a mono camera and filter wheel.
Choose filter size around the sensor diagonal, telescope speed, and filter-wheel or drawer geometry. Flats are still required; a filter can improve contrast, but it will not rescue tilt, bad focus, or poor calibration.
Best paired with
- Monochrome camera, matching filter wheel, and autofocus offsets
- Ha/OIII/SII emission nebula projects
- Long integrations with darks, flats, and careful star handling
Not recommended for
- Unmodified color cameras as the primary workflow
- Targets dominated by broadband continuum signal
- Users who want natural star color with minimal processing
Where To Buy
Some links on this page are affiliate links. Prices and availability are pulled automatically from each retailer and updated daily.
| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| Agena AstroProducts Agena AstroProducts | $3,850.00 | In stock Updated 5/15/2026 | View Offer - $3,850.00 |
| Telescopes.net Telescopes.net | $3,900.00 | In stock Updated 5/13/2026 | View Offer - $3,900.00 |