IDAS NGS1-DZ broadband nebula filter for astrophotography with IR block for ZWO filter drawers

IDAS NGS1 Night Glow Suppression Filter

The IDAS NGS1 (formerly LPS-D3) filters improve the contrast of astronomical emission nebulae against a sky with artificial and natural sky illumination, including white LED lights, while preserving the color balance of broadband emitting objects such as galaxies. As with other IDAS interference filters, the bandpass filters are designed to cope with very fast telescopes and lenses.

The most important spectral lines of hydrogen (H_α, H_β, H_γ), oxygen ([O III]), sulfur ([S II]) and comets (C₂ in the head and coma, CO⁺ in the ion tail) are transmitted.

Astrophotographic results achieved with this filter on Astrobin
Here you can find astrophotos taken with this filter: Link to Astrobin

Features are:

Ideal bandpass with uniformly high maximum transmission and moderate design

Excellent in-band transmission

Steep bandpass edges minimize internal reflections

Near IR (NIR) is blocked up to 1200 nm

2.5 mm thickness (parfocal with other IDAS LPS filters)

IDAS proprietary IGAD/MBT/UFP quality

Made in Japan

The advantages of DZ frames for filter drawers:
The Idas filters in the DZ frames are specially made for ZWO filter drawers (Gen. II). While classic 2" filters only have a clear aperture of 43 mm, the filter in the DZ frame has an impressive 47 mm clear aperture. This significantly reduces vignetting on cameras with larger sensors and telescopes with higher speed.

Safety informations: PDF Download