Caldwell 4 Iris Nebula

For this image I used siril to stack the images together, plate solve and spectrophotometric colour calibrate the image.  I then used ZWO ASIFitsView to stretch the image, before some final processing in Photoshop.

The Iris Nebula (also known as NGC 7023 or Caldwell 4) is a bright reflection nebula located about 1,300 light years from Earth in the constellation of Cepheus. It is six light-years across. The nebula is illuminated by a magnitude +7.4 star designated HD 200775. It is six light-years across.The nebula was discovered in 1794 by Sir William Herschel, a astronomer, where it was then added to the New General Catalogue (NGC).