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The Iris Nebula, also NGC 7023 and Caldwell 4, is a bright reflection nebula in the constellation of Cepheus. It lies 1,300 light-years away and is six light-years across. It is called the Iris nebula due to the way it is framed within the huge dust clouds surrounding it. These types of dusty targets are rather tricky as it's difficult to get any form of separation from the reflection of the Iris and the actual dust.
This is a total of 50 hours worth of exposure and it took a few weeks to gather all the data.
Each exposure in the luminance filter that provides the detail is 10 minutes and the colour filters were 5 mins exposures.
NGC7023 - Iris nebula by Sara Wager, on Flickr
This is a total of 50 hours worth of exposure and it took a few weeks to gather all the data.
Each exposure in the luminance filter that provides the detail is 10 minutes and the colour filters were 5 mins exposures.
NGC7023 - Iris nebula by Sara Wager, on Flickr