IDAS GNB Galaxy & Nebula Booster Filter - 1.25" Mounted (M28.6)

Name: IDAS GNB Galaxy & Nebula Booster Filter - 1.25" Mounted (M28.6)
Brand: IDAS

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.

imaging-filter budget

IDAS GNB Galaxy & Nebula Booster Filter - 1.25" Mounted (M28.6)

Best Current Offer

Starizona

In stock

$150.00

Other retailers

Cloud Break Optics (In stock)
$239.00

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

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Retailer	Price	Availability	View Offer
Starizona Starizona	$150.00	In stock Updated 9/20/2026	View Offer - $150.00
Cloud Break Optics Cloud Break Optics	$239.00	In stock Updated 9/20/2026	View Offer - $239.00

Price History

Chronological retailer pricing with out-of-stock points shown at reduced opacity.

Cloud Break Optics Starizona