caption: PK 164+31.1, The Headphone Nebula
exif: {"Image ImageWidth": "3335", "Image ImageLength": "4500", "Image BitsPerSample": "[16, 16, 16]", "Image Compression": "Uncompressed", "Image PhotometricInterpretation": "2", "Image ImageDescription": "largish and very dim, planetary nebula.PK 164+31.1, sometimes known as a \"Jones-Emberson 1\" has an angular diameter of 6', 67\" x 6', 67\" and it locates in constellation Lynx. Distance from my home town Oulu, Finland, is about 1600 light years. \nThe tiny Blue central star is a white dwarf, the intense ultraviolet light emitted by this star makes elements in a ring glow. Ionized Hydrogen emits red light and the ionized Oxygen blue one.  \n  \nWhy the name \"PK 164+31.1\"? \nPK comes from the names of Czechoslovakian astronomers Perek and Kouhutec. 1967 they created an extensive catalog of all of the known planetary nebulae in  1964. The number indicates the position in the sky. The alternative name \"Jones-Emberson 1\" is after its discoveres.", "Image Orientation": "Horizontal (normal)", "Image SamplesPerPixel": "3", "Image XResolution": "72", "Image YResolution": "72", "Image PlanarConfiguration": "1", "Image ResolutionUnit": "Pixels/Inch", "Image Software": "Adobe Photoshop CS3 Windows", "Image DateTime": "2013:05:16 13:03:07", "Image Artist": "J-P Mets\u00e4vainio", "Image Copyright": "J-P Mets\u00e4vainio", "Image ExifOffset": "3142", "Image Padding": "[]", "Thumbnail Compression": "JPEG (old-style)", "Thumbnail XResolution": "96", "Thumbnail YResolution": "96", "Thumbnail ResolutionUnit": "Pixels/Inch", "Thumbnail JPEGInterchangeFormat": "5352", "Thumbnail JPEGInterchangeFormatLength": "5085", "EXIF ColorSpace": "sRGB", "EXIF ExifImageWidth": "1020", "EXIF ExifImageLength": "794", "EXIF ImageUniqueID": "672F2FB656044FDB9B8E511FBBA92FAA", "EXIF Padding": "[]"}