Optolong SHO 7nm Filter Set - 1.25" Mounted
Optolong
Optolong SHO 7nm (3 Filter Set) - 1.25" Mounted is a narrowband filter in 1.25" for mono emission-line imaging.
imaging-filter midrange
Best Current Offer
Mile High Astronomy
In stock
Specifications
Filter
- Filter type
- SHO narrowband filter set
- Filter size
- 1.25" / Mounted
Spectral
- Passbands
- SII 672.4 nm (7 nm) / H-alpha 656.3 nm (7 nm) / OIII 500.7 nm (7 nm)
- Band count
- 3 bands
- Narrowest bandpass
- 7 nm
Specifications
- Substrate / coating
- Non-cementing optical glass
Use
- Camera use
- Mono astronomy cameras
Astrophotography Fit
Best for isolating emission lines with a mono camera and filter wheel.
Optolong SHO 7nm (3 Filter Set) - 1.25" Mounted is a midrange narrowband filter (1.25").
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
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| Retailer | Price | Availability | View Offer |
|---|---|---|---|
| Mile High Astronomy Mile High Astronomy | $465.00 | In stock Updated 5/12/2026 | View Offer - $465.00 |