IDAS GNB Galaxy & Nebula Booster Filter - 1.25" Mounted (M28.6)
IDAS
IDAS GNB Galaxy & Nebula Booster Narrowband Imaging Filter 1.25" Mounted (M28.6) is a multi-band nebula filter in 1.25" for nebula imaging and light-polluted skies.
Specifications
Filter
- Filter type
- Dual-band / multi-band nebula filter
- Filter size
- 1.25" / Mounted / M28
Spectral
- Passbands
- Imaging passband specified by filter model
Use
- Camera use
- Mono astronomy cameras
Astrophotography Fit
Best for emission nebulae with one-shot color cameras, especially from light-polluted skies.
IDAS GNB Galaxy & Nebula Booster Narrowband Imaging Filter 1.25" Mounted (M28.6) is a budget-friendly multi-band nebula filter (1.25").
Best for emission nebulae with one-shot color cameras, especially from light-polluted skies.
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
- One-shot color cooled cameras or modified DSLRs
- Emission nebulae rich in H-alpha, OIII, SII, or H-beta signal
- Filter drawer or wheel sized to avoid vignetting
Not recommended for
- Broadband galaxies, reflection nebulae, or clusters as the main use case
- Monochrome SHO workflows that need separate channels
- Very fast optics unless bandpass shift and halos have been checked
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 |
|---|---|---|---|
| Starizona Starizona | $150.00 | In stock Updated 8/5/2026 | View Offer - $150.00 |
| Cloud Break Optics Cloud Break Optics | $239.00 | In stock Updated 8/5/2026 | View Offer - $239.00 |
Price History
Chronological retailer pricing with out-of-stock points shown at reduced opacity.