Back IC1805Heart Nebula in Emission-Line Click to display the full resolution Object InfoTypeEmission NebulaConstellationCassiopeiaDistance7,500 ly Capture DetailsDateSeptember 16, 2006LocationCarlsbad, CAExposureSII 4x15 (bin 2x2), Ha 9x15 (bin 1x1), OIII 4x15 (bin 2x2) as RGBNotesHa also used as the Luminance layer EquipmentOpticsTakahashi FSQ-106N RefractorFocal Length530mm @f/5MountCelestron CGECameraSBIG ST-2000XMFocuserRobo-FocusFiltersCFW10A, Astrodon 6nm SII, Ha, OIIISoftwareMaxim DL, RegiStar, Photoshop