Back NGC6888Crescent Nebula in Emission-Line Click to display the full resolution Object InfoTypeSupernova RemnantConstellationCygnusDistance5,000 ly Capture DetailsDateOctober 16, 2021LocationPalomar Mountain, CAExposureHa 10x15 (bin 1x1) EquipmentOpticsDSI RC10C Corrected RC AstrographFocal Length1867mm @f/7.3MountAstro-Physics 900GTOCameraFLI ML-6303EFocuserBuilt-in Secondary FocuserFiltersFLI CFW2-7, Astrodon 3nm HaSoftwareMaxIm DL, CCDStack, Photoshop