Iris Nebula – Ha with LRGB

The Iris Nebula (also known as NGC 7023 and Caldwell 4) is a bright reflection nebula in the constellation Cepheus. The nebula is illuminated by a magnitude +7.4 star designated HD 200775 and it’s located 1 300 light years from earth.

It was one of those nights, you get a clear night unexpectedly, but the moon is very bright, and you have very limited options. I could only image to the north and only with narrowband filters, so I thought why not gather some Ha data on the Iris Nebula. I ended up with almost 10 hours of usable Ha data and started to think about how to blend that in with my existing LGRB data.