M45 Pleiades ( Kharan )

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M45 Pleiades

Imaging telescope or lens:Skywatcher Explorer 200PDS

Imaging camera:Nikon D810A

Mount:Skywatcher NEQ6 PRO Synscan

Guiding telescope or lens:Skywatcher 9x50 finderscope

Guiding camera:QHYCCD QHY5L-IIc

Focal reducer:Baader MPCC Mk III

Software:Photoshop , Pixinsight

Accessory:Seletek Armadillo

Dates:Nov. 2, 2018

Frames: 16x600"

Integration: 2.7 hours

Avg. Moon age: 24.09 days

Avg. Moon phase: 29.97%

Astrometry.net job: 2380891

RA center: 3h 47' 18"

DEC center: +24° 12' 22"

Pixel scale: 0.994 arcsec/pixel

Orientation: 146.837 degrees

Field radius: 1.006 degrees

Resolution: 5972x4200

Locations: Puolivälinkangas - Oulu, Oulu, Finland

Data source: Backyard

The Pleiades (/ˈplaɪ.ədiːz, ˈpliːə-/), 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 nearest star clusters to 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. A faint reflection nebulosity around the brightest stars was thought at first to be left over from the formation of the cluster (hence the alternative name Maia Nebula after the star Maia), but is now likely an unrelated foreground dust cloud in the interstellar medium, through which the stars are currently passing.[7]

Computer simulations have shown that the Pleiades were probably formed from a compact configuration that resembled the Orion Nebula.[8] 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.[9]