M45 – Pleiades, open star cluster
The Pleiades also known as the Seven Sisters and Messier 45, are an open star cluster containing middle-aged, hot B-type stars located in the constellation of Taurus. It is among the star clusters nearest Earth and is the cluster most obvious to the naked eye in the night sky.
The cluster is dominated by hot blue and luminous stars that have formed within the last 100 million years. Reflection nebulae around the brightest stars were once thought to be left over material from the formation of the cluster, but are now considered likely to be an unrelated dust cloud in the interstellar medium through which the stars are currently passing.
Location: La Palma 12.2020
ATIK Horizon RGB,
IDAS IR Cut filter,
Hypergraph TS 150mm f/2,8 OTA PH6,
iOptron CEM25P with small self made tuning
Processing: APP + RT + GIMP + add-ons (Linux),
Summary exposure: 6h
Calibration frames: Darks, Bias, Flats