IDAS Nebula Booster NBZ UHS 48 mm IDAS filter for RASA and HyperStar

IDAS Nebula Booster NBZ UHS 48 mm IDAS filter for RASA and HyperStar

The Hutech IDAS NBZ lets through O-III and H-Alpha and the UHS version is especially suitable for high-speed optics such as Celestron RASA or Hyperstar.

♦ 2" filter mounted with M48x0.75 thread connection - low profile filter mount

♦ Suitable for monochrome and color cameras

♦ Especially suitable for focal ratios from 1:1.8 to 1:2.8 (a 1:4 or smaller, the NBZ-48 is better )

♦ Therefore, it can be used especially with fast telescopes like RASA or HyperStar

♦ The filter is very suitable for recording gas nebulae and planetary nebulae

♦ Artificial sky glow (stray light) is almost completely blocked

♦ High quality anti-reflective coating with an anti-reflective coating

♦ Scratch resistant hard coating

♦ Thickness of 2,5 mm - parfocal to other IDAS filters

♦ Infrared light is blocked

♦ IDAS filters are manufactured in Japan

The NBZ-UHS filter is a dual line pass filter that can be used with single-shot color cameras (DSLRs, system cameras, color astronomy cameras) and monochrome cameras.

The NBZ UHS filter lets through the red H-alpha line and blue-green lines [O III] and increases contrast . Itobtains narrow-band recordings with a single exposure series.

The special thing about the NBZ UHS haze filter is that it is particularly suitable for very fast lenses between 1:1.4 and 1:2.8. Other narrow band filters cut too much. Instead of 90%, there may only be 30-40% light transmission. Fog is barely visible. Not so with the NBZ UHS, even at 1:1.4 you still have more than 85%. This makes the filter ideal for fast telescopes like Celestron RASA or Starizona HyperStar.

The IDAS NBZ UHS allows an extension of the exposure time by a factor of 4. However, 90% of the most important lines in the deep sky area (H-alpha and O-III) are missed.

In short, you can expose about four times longer until the sky background appears, but the object appears much stronger and contrasting against the background than without a filter.

Delivered:

Plastic container

Nebula filter