IDAS NGS1 / LPS-D3 filter IDAS LPS-D3(formerly NGS1) filters enhance the contrast of astronomical emission nebulae against a sky with both man-made and natural* sky glow sources, yet preserve color balance of broadband objects such as galaxies. As with other IDAS interference filters, the bandpasses are designed to accommodate the steep ray angles of fast optical systems. Technical Specification Ideal flat-top and moderate bandpassExcellent in-band transmissionSteep bandpass edges minimize internal reflectionsNear IR (NIR) is blocked up to 1200nmAvailable in 52mm and 48mm sizes2.5mm thickness (parfocal with other IDAS LPS filters)IDAS-proprietary IGAD/MBT/UFP qualityMade in Japan In the Box LPS-D3 Filter Manual & Warranty IDAS 3-Year Warranty
