jmoore Posted January 5, 2023 Share Posted January 5, 2023 Has anyone used a duo narrowband filter and separated the channels in affinity photo? I have a modded DSLR and L enhance filter and would like to make a false color image by separating and remapping the color data. Thanks in advance for your help! Quote Link to comment Share on other sites More sharing options...
Staff Callum Posted February 22, 2023 Staff Share Posted February 22, 2023 Hi Jmoore, Welcome to the forums I apologise for the delayed response to your post. Unfortunately Astrophotography isn't my area of expertise however does the following help article help with this at all? V1 help article:https://affinity.help/photo/en-US.lproj/index.html?page=pages/Astrophotography/astro_narrowband.html?title=Compositing narrowband astrophotography V2 help article:https://affinity.help/photo2/English.lproj/index.html?page=pages/Astrophotography/astro_narrowband.html?title=Compositing narrowband astrophotography Thanks C Quote Please tag me using @ in your reply so I can be sure to respond ASAP. Link to comment Share on other sites More sharing options...
irandar Posted January 23 Share Posted January 23 Hi Callum. I think this does not answer the question of separating the filter bands. I have read that Siril will do it but have not been able to find anything on this subject for Affinity. Regards Irving Quote Link to comment Share on other sites More sharing options...
NotMyFault Posted January 23 Share Posted January 23 Should be quite easy. use 2 channel mixer adjustments. one passes red channel only, the other passes green/blue filter only (weighted average). then use gradient map or any other method to assign colors to the greyscale images. can someone provide example images? Quote Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. Link to comment Share on other sites More sharing options...
irandar Posted January 23 Share Posted January 23 Where does one find the 2 channel mixer adjustments? Thanks Quote Link to comment Share on other sites More sharing options...
NotMyFault Posted January 23 Share Posted January 23 5 hours ago, irandar said: Where does one find the 2 channel mixer adjustments? Thanks What I tried to express is you add 2 instances of the channel mixer adjustment, and adjust the settings accordingly. This allows to mimic the "math equations" of Siril. I have no more details or tutorials about the actual formulas for users coming from Siril. Quote Mac mini M1 A2348 | Windows 10 - AMD Ryzen 9 5900x - 32 GB RAM - Nvidia GTX 1080 LG34WK950U-W, calibrated to DCI-P3 with LG Calibration Studio / Spider 5 iPad Air Gen 5 (2022) A2589 Special interest into procedural texture filter, edit alpha channel, RGB/16 and RGB/32 color formats, stacking, finding root causes for misbehaving files, finding creative solutions for unsolvable tasks, finding bugs in Apps. Link to comment Share on other sites More sharing options...
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