Back NGC6888Crescent Nebula in Emission-Line Click to display the full resolution Object InfoTypeSupernova RemnantConstellationCygnusDistance5,000 ly Capture DetailsDateSeptember 15, 2008LocationCarlsbad, CAExposureHa 12x15 (bin 1x1) EquipmentOpticsTakahashi MT200 NewtonianFocal Length1200mm @f/6MountAstro-Physics 900GTOCameraSBIG ST-2000XMFiltersCFW10A, Astrodon 6nm HaSoftwareMaxim DL, CCDStack, Photoshop