Iris Nebula ( C4)

C4 “THE IRIS NEBULA” (NGC 7023) Taken during the week of October 12th to 17th, in Scoudouc, NB , Canada The Iris Nebula, also designated as Caldwell 4 (C4) or NGC 7023, is a bright and colorful reflection nebula in the constellation Cepheus. Key Facts Type: Reflection nebula (cloud of interstellar dust reflecting starlight). Distance: About 1,300 to 1,400 light-years from Earth. Size: Roughly 6 light-years across. Constellation: Cepheus. Discovery: Sir William Herschel on October 18, 1794. Illuminating Star: HD 200775 (SAO 19158), a hot, young, bright binary star. Color: Predominantly blue from light scattering off tiny dust grains, with faint red filaments caused by photoluminescent hydrocarbon compounds

10-19 01:56 · Canada Nova Scotia

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