M45
"Pleiades"

IMAGE DETAILS

Object ............................................ M 45 - " Pleiades "
Constellation ..............................  Taurus
Distance + Ap. Magnitude.......  391 - 456  Light Years - 1.6
Date + Time ...............................  9 & 12 / 12 /2020 - 20:00 UTC
Location ....................................  "Nunki Observatory" - Skiathos
Optics ......................................... 
 Officina Stellare Advanced RILA 400 
f/5.25
Tools ..........................................   The Sky X , ACP
Camera .....................................   SBIG STXL11002  with FW8G-STXL (Astrodon filters)
Exposure Time.......................     Luminance: 36 X 300sec RGB: 12 X 300sec
More Details ...........................    Environment Temperature : 13C Camera Temperature -25C
Mount .......................................   Paramount ME
Guiding ....................................   Self guided
Processing Details ................    Photoshop , Maxim , Pixinsight
Notes ........................................   Weather: Weather:8/10 - Transparence: 4/6 - Humidity : 75 %
Moon Illumination ...............    5%


Target details .........................  Iastronomy, the Pleiades, or Seven Sisters (Messier object 45), is an open star cluster containing middle-aged hot B-type stars located in the constellation of Taurus. It is among the nearest star clusters to Earth and is the cluster most obvious to the naked eye in the night sky. Pleiades has several meanings in different cultures and traditions. The cluster is dominated by hot blue and extremely luminous stars that have formed within the last 100 million years. Dust that forms a faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the alternate name Maia Nebula after the star Maia), but is now known to be an unrelated dust cloud in the interstellar medium that the stars are currently passing through. Astronomers estimate that the cluster will survive for about another 250 million years, after which it will disperse due to gravitational interactions with its galactic neighborhood.
 

Nikos Paschalis