The Iris Nebula from Egypt

This is the Iris Nebula (NGC7023) a very prominent reflection nebula located in Cepheus, and the interstellar cloud is reflecting the light of a young and very hot star inside the nebula

Nikon D3500 astromodified
Sigma 400mm F5.6
Skywatcher Tripod
Optolong L Pro filter

30s x 1160 iso 400 f8
45s x 549 iso 400 f8
About 16.5 hours of integration time
With darks, flats, and bias frames

Stacked and fully processed in Siril and Photopea.