Our galactic neighbor, the Andromeda galaxy (M31) is one of the most widely and studied object. Even then an stunning discovery was made by amateur Astrophotographers where they discovered a faint O3 arc. This is my attempt to recreate that discovery with deepest narrowband image ever done by a single astrophotographer. With over 399 hours of integration, this image not only shows that amazing O3 arc, but also the deepest image of the nebulae in the andromeda galaxy’s arms.