The Iris Nebula (also known as NGC 7023) is a bright reflection nebula in the constellation Cepheus. The designation NGC 7023 refers to the open cluster within the larger reflection nebula designated LBN 487. The nebula lies 1,300 light-years away and is six light-years across. The Iris Nebula is illuminated by the hot, blue, massive star SAO 19158 (HD 200775). The star lights up the surrounding particles of dust that are 10 to 100 times smaller than dust particles on Earth. These particles diffuse the star’s glare, producing the image of a nebula that glows in bluish light. The nebula’s hourglass shape is the result of interactions of HD 200775 with the surrounding dust cloud. The cavity was likely formed by the young star when it was at an earlier stage of forming. Telescope: Esprit 120  Camera: ASI1600MM Pro Filters: Antlia LRGB pro series Integration time: 40hours (over the summer) Guide camera: 290MM mini Control unit: Eagle 4 and Asiair Plus Mount: EQ6r Pro Post-Processing: Pixinsight