![M27 Nebula, a first light color image, exp. 300sec frame, org. rev. image. Filter: 2" Triad Ultra Quad-Band Narrowband Filter ( Niels V. Christensen ) - AstroBin M27 Nebula, a first light color image, exp. 300sec frame, org. rev. image. Filter: 2" Triad Ultra Quad-Band Narrowband Filter ( Niels V. Christensen ) - AstroBin](https://cdn.astrobin.com/thumbs/SP4cH6dV6CKp_1824x0_0g_DZ9w-.jpg)
M27 Nebula, a first light color image, exp. 300sec frame, org. rev. image. Filter: 2" Triad Ultra Quad-Band Narrowband Filter ( Niels V. Christensen ) - AstroBin
Astro Pixel Processor - APP 1.068: I have added 4 new debayer algorithms, especially for so-called Multiple NarrowBand filters like the STC Astro Duo Narrowband filter & OPT TRIAD Tri-Band Narrowband filter.
![Red halos with Radian Triad Ultra Quad-Band Narrowband Filter – General – Astro Pixel Processor Forum Red halos with Radian Triad Ultra Quad-Band Narrowband Filter – General – Astro Pixel Processor Forum](https://i0.wp.com/www.astropixelprocessor.com/wp-content/uploads/wpforo/attachments/2204/5717-stars.jpg?ssl=1)
Red halos with Radian Triad Ultra Quad-Band Narrowband Filter – General – Astro Pixel Processor Forum
![Rosette with the OPT Quadband filter and ASI294mc-pro - Experienced Deep Sky Imaging - Cloudy Nights Rosette with the OPT Quadband filter and ASI294mc-pro - Experienced Deep Sky Imaging - Cloudy Nights](https://www.cloudynights.com/uploads/monthly_02_2019/post-217044-0-44930400-1549861450.jpeg)
Rosette with the OPT Quadband filter and ASI294mc-pro - Experienced Deep Sky Imaging - Cloudy Nights
OPT Telescopes - Have you heard about the Radian Triad Ultra Filter? This Filter allows you to cut straight through light pollution in even the most heavily light-polluted cities. This image was
![OPT just announced their Quad-Band narrowband filter - Page 3 - Beginning Deep Sky Imaging - Cloudy Nights OPT just announced their Quad-Band narrowband filter - Page 3 - Beginning Deep Sky Imaging - Cloudy Nights](https://www.cloudynights.com/uploads/monthly_01_2019/post-229565-0-07671100-1547807189.jpeg)
OPT just announced their Quad-Band narrowband filter - Page 3 - Beginning Deep Sky Imaging - Cloudy Nights
![Amateur AstroImaging on Twitter: "OPT TRIAD TRI-BAND NARROWBAND FILTER https://t.co/Sgx2S4XJhL https://t.co/RExxrOIWa2" / Twitter Amateur AstroImaging on Twitter: "OPT TRIAD TRI-BAND NARROWBAND FILTER https://t.co/Sgx2S4XJhL https://t.co/RExxrOIWa2" / Twitter](https://pbs.twimg.com/media/Di2pZyeX4AAT5Cg.jpg)