IDAS NBZEX 12nm narrow band nebula filter O-III, H-Alpha 2".

IDAS NBZEX 12nm narrow band nebula filter O-III, H-Alpha 2".

The NBZEX from IDAS is a dual-band nebula filter with O-III and H-Alpha transmission - thanks to an improved arrangement of the transmission curves, the filter works with lenses and telescopes with f/1.8 and weaker light.

2" filter mounted with M48x0.75 thread connection - low-profile filter holder
Suitable for monochrome and color cameras
Can be used with all telescopes with f/1.8 and weaker light
The filter is very suitable for recording diffuse and planetary nebulae.
Transmission 12 nm (+/- 0.4 nm) in H-Alpha and O-III
The artificial brightening of the sky (scattered light) is practically completely blocked.
High-quality anti-reflective coating thanks to an anti-reflective layer - no halo problem around bright stars.
Scratch-resistant hard coating
2.5 mm thickness - parfocal to other IDAS filters
The infrared light is blocked
IDAS filters are produced in Japan


IDAS NBZEX-48 dual-band nebula filter also for high-speed telescopes and lenses
The NBZ filter is a dual line pass filter that can be used with one-shot color cameras (DSLR, mirrorless system cameras, color astro cameras) and monochrome cameras. It supports all telescopes and camera lenses from f/1.8 and weaker.

The NBZ filter passes the red H-alpha line and the blue-green [O III] lines and increases the contrast. You get narrowband images with just one series of exposures. The bandwidth is about 12 nm.

The special thing about the NBZEX nebula filter is that it is also suitable for very bright optics from f/1.8. This means you can use the nebula filter on practically all common camera lenses and telescopes. The bandwidth of 12 nm is slightly larger on the NBZEX. This slightly larger bandwidth has the advantage that the filter can also be used on bright optics with a similar contrast, without any significant loss in transmission. So you don't have to buy a special narrow band filter for fast camera lenses, the NBZEX can be used universally.

Technology: interference filter
Bandwidth: approx. 12 nm
Filter glass thickness: 2.5 mm +/- 0.1 mm
Socket: 2" with M48x0.75 thread

Mist filter
Plastic container