The Christmas Tree Cluster also looks a bit like a Christmas tree as a nebula as well. This image shows the light from glowing hydrogen gas in this region. It's quite a wide shot for 600mm focal length due to the large area of the imaging chip.
Image Details
Camera: FLI Proline 16803 Optic: Veloce, RH-200 Mount: Paramount MYT Date: December, 2017 Narrowband Ha, 3 hours of integration time.