IC 1318, Sadr izarraren edo Gamma Cygniren inguruan dagoen igortze nebulosa da, Tximeleta nebulosa bezala ezaguna ere. Gamma Cygni izarraren inguruan nebulosa ilun asko daude, igortze nebulosez gain. Sadr izarraren distira 2,2 magnitude ingurukoa da gutxi gorabehera eta inguruko nebulosak ere nahiko distiratsuak dira.

IC 1318, is the diffuse emission nebula surrounding Sadr or Gamma Cygni (the star of the center of Cygnus's cross), known also as Buttefly Nebula. This region contains many dark nebulae in addition to the emission diffuse nebulae. Sadr itself has approximately a magnitude of 2.2 and the nebulous regions around it are also fairly bright.