IDAS NBZ-II Dualband Highspeed Narrowband Nebula Fliter O-III, H-Alpha - EOS drop-in holder

IDAS NBZ-II-DRE dual band nebula filter for fast telescopes and lenses

The NBZ filter is a dual line pass filter especially for EOS cameras. It is the successor to the NBZ/NBZex filter and is suitable for all telescopes and camera lenses from f/1.9 and slower.

The NBZ filter passes the red H-alpha line and the blue-green [O III] lines and increases the contrast. You obtain narrow-band images with only one exposure series.

The special feature of the NBZ-II nebula filter is that it is also suitable for very fast optics up to a focal ratio of 1:1.9, even with obstructed systems. This means that you can use the nebula filter on practically all common telescopes and most camera lenses.

The bandwidth of 10 nm for H-alpha and 8 nm for [O III] is slightly wider with the NBZ-II than with comparable 7 nm dual-band filters from other manufacturers. This somewhat wider bandwidth has the advantage that the filter can also be used on fast optics with similar contrast without a significant loss of transmission. This means that you do not have to buy a special narrow band filter for fast systems, as the NBZ-II can be used universally. In contrast, some of the competing filters with 7 nm or narrower bandwidth reduce transmission by 50 % or more when used in a fast optical system (around f/2).

Adapter from Canon EF to Canon R/RP
Here you can find the Meike adapter from Canon EF to Canon R/RP with the slot for the DRE filters: Meike-Shop

Safety informations: PDF Download