Deepsky
The target of deepsky photography is the nebulae and galaxies, with the equipments more specialized. Due to the very bad environment in Beijing, extremely bad light pollution and poor seeing, the results below are far from contentment.
A Ha filter was used throughout to fight against light pollution, with the negative effect that the details of the galaxies are affected, but the emission nebulae are still well rendered.
December, 2022
M31|Andromeda Galaxy
IC1805|Heart Nebula
NGC1499|California Nebula