Open star cluster M46. 19th-century astronomical observation of the open star cluster M46 (NGC 2437). North is at top. Also visible near centre as a nebulosity around one of the stars is the planetary nebula Herschel IV 39 Argus (H IV.39,NGC 2438). M46 is around 5500 light years away,in the constellation of Puppis. This 90-minute exposure was obtained on 24 February 1894,from the observatory in Crowborough,Sussex,UK. This observatory was built and operated by British amateur astronomer Isaac Roberts (1829-1904),one of the pioneers of the new techniques of astrophotography | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Royal Astronomical Society |
Bildgröße: | 3753 px × 4715 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |