Thé Horsehead Nebula appears as a dark silhouette in the vast Orion Molecular Cloud Complex behind it. It is too faint to see without a telescope. It was first identified by the Scottish astronomer Williamina Fleming in 1888. The deep red colour is caused by the ionized hydrogen that dominates this area. It is about 1,400 light-years away. This image is a composite of 54 photos, where each is a 3 minute exposure. I used an special filter to highlight the ionized hydrogen. I captured this image from my balcony in Strasbourg France in early February 2023. #horseheadnebula #barnard33 #ngc2023 #orionmolecularcloudcomplex #orionbelt #astronomy #astrophotography #astronomiefrance #astropgotographie (at Strasbourg, France) https://www.instagram.com/p/Coh7ppvstFv/?igshid=NGJjMDIxMWI=