{"product_id":"antlia-quad-anti-light-pollution-filter-2-quad-anti-lp-2","title":"Antlia Quad Anti-Light Pollution Filter - 2\" - QUAD-ANTI-LP-2","description":"\u003ch3 style=\"text-align: center;\"\u003eAntlia Quad Anti Light Pollution Filter - 2\" Mounted\u003c\/h3\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/Antila_QUAD_LP_Filter_Specs.png?v=1740087537\" style=\"display: block; margin-left: auto; margin-right: auto;\"\u003e\u003c\/p\u003e\n\u003cp\u003eThe Antlia Quad Band Anti-Light Pollution Filter is a light suppression filter for color and monochrome cameras. It is able to shoot most deep sky objects like galaxies, reflection nebulae, emission nebula, and star clusters from a Bortle 1-8 location as its spectral transmission passes through the visible light region, near-ultraviolet (NUV) and near-infrared (NIR) region.\u003c\/p\u003e\n\u003cp\u003eThe Antlia Quad Band filter has a broad bandpass designed to cope with faster optics up to the f\/2 focal ratio.\u003c\/p\u003e\n\u003cp\u003eConsidering the high quantum efficiency (QE) characteristics of the latest cameras in the near-infrared region and this region is less susceptible to artificial light pollution, the Antlia Quad Band Light-Pollution Filter adds high transmission in the near-infrared (NIR) band. This spectrum design improves image signal-to-noise ratio and contrast by capturing signals in visible bands and NIR region, while also maintaining ood color balance and being easier to manage in post-processing. \u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eCertain full-spectrum objects like M51, M83 possess significant signal in the near-infrared (NIR) region, you can possibly capture these deep sky objects more contrasted with the Antlia Quad Band filter under light polluted condition.\u003c\/p\u003e\n\u003cp\u003eWhen using this filter with a camera that has UV\/IR cut protective glass, the visible band transmission signal is retained, but the IR cut limits your ability to capture targets with infrared signal.\u003c\/p\u003e\n\u003cp\u003eTherefore, the Antlia Quad Band filter is more suitable for cameras with AR protective glass as they can capture both NIR and visible band signals.\u003c\/p\u003e\n\u003ch3\u003eHighlights and Application\u003c\/h3\u003e\n\u003cp\u003e- Anti-Light Pollution\u003c\/p\u003e\n\u003cp\u003eThe Antlia Quad Band filter is an effective solution for reducing light pollution, as it cuts out most of the orange-yellow lights from 589nm and part of blue lights from LEDs\u003c\/p\u003e\n\u003cp\u003e- Possible to shoot over 95% of deep sky objects\u003c\/p\u003e\n\u003cp\u003e- Unique spectral design offers more possibilities for astrophotography\u003c\/p\u003e\n\u003cp\u003e- High transmittance of the main emission lines Ha\/SII\/OIII\/H-Beta in the visible region, enhances the astrophotography's high SNR and contrast;\u003c\/p\u003e\n\u003cp\u003e- Near-infrared (NIR) region transmittance\u003c\/p\u003e\n\u003cp\u003e- Passing near infrared region is for shooting deep sky objects that cannot be shot with other filters without NIR transmission\u003c\/p\u003e\n\u003cp\u003e- The broad bandpass designed to cope with faster optics up to the f\/2 focal ratio.\u003c\/p\u003e\n\u003cp\u003e- Good color balance\u003c\/p\u003e\n\u003cp\u003e- It is easier to achieve color balance by adding the short-wavelength transmission\u003c\/p\u003e\n\u003cp\u003e- Superior optical reliability reduces post image processing\u003c\/p\u003e\n\u003cp\u003e- Basic Substrate: Optical, Single \/ Non-glued substrate\u003c\/p\u003e\n\u003cp\u003e- Surface Quality: S\/D (scratch\/dig)= 60\/40 (Refer to MIL-O-13830)\u003c\/p\u003e\n\u003cp\u003e- Transmitted Wavefront: Lambda\/4 or better.\u003c\/p\u003e\n\u003cp\u003e- Parallelism: less than 30 arcsec\u003c\/p\u003e\n\u003cp\u003e- Warranty: 3-years against delamination\u003c\/p\u003e\n\u003ch3\u003eFilter Specifications\u003c\/h3\u003e\n\u003cp\u003eH-Alpha Wavelength:  656.3nm\u003c\/p\u003e\n\u003cp\u003eSII Wavelength:  671.6nm \u0026amp; 672.4nm\u003c\/p\u003e\n\u003cp\u003eOIII Wavelength:  495.9nm \u0026amp; 500.7nm\u003c\/p\u003e\n\u003cp\u003eH-Beta Wavelength:  486.1nm\u003c\/p\u003e\n\u003cp\u003eNII Wavelength:  658.3nm \u0026amp; 654.8nm\u003c\/p\u003e\n\u003cp\u003ePeak Transmission for All Wavelengths:  \u0026lt;92%\u003c\/p\u003e\n\u003cp\u003eBlocking:  +\/-OD4 @ 300-1050nm\u003c\/p\u003e\n\u003cp\u003eFilter Thickness:  2 mm +\/- 0.05mm\u003c\/p\u003e\n\u003cp\u003eFilter Ring:  2\" - M48*0.75, black anodized, laser engraved\u003c\/p\u003e","brand":"Antlia","offers":[{"title":"Default Title","offer_id":41674721263729,"sku":"ATL-QUAD-ANTI-LP-2","price":180.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/2766\/files\/QUAD-ANTI-LP-2.jpg?v=1776459255","url":"https:\/\/khanscope.com\/fr-fr\/products\/antlia-quad-anti-light-pollution-filter-2-quad-anti-lp-2","provider":"Khan Scope Centre","version":"1.0","type":"link"}