Canon 30D Unmodified with Astronomik CLS filter
32x360sec at iso 1600
30 Darks/Flats/Bias
Vintage Orange Tube C8 reduced 0.63Named for it's resemblance to the beautiful blue/purple Iris flower, LBN487 is a pure reflection nebula, caused by light from the central magnitude 7 star, SAO 19158, being reflected off dust particles left over from when the star was formed. NGC 7023 refers to the open cluster in the triangular gap in the nebulous region.Infrared observations indicate that this nebula may contain complex carbon molecules known as
PAHs. The Iris nebula is about 6 light-years across.
July 15, 2007
