M45 Pleiades - a photo on Flickriver

M45 Pleiades

            Commonly called the Pleiades or Seven Sisters, M45 is an open star cluster. It contains over a thousand stars that are loosely bound by gravity, but it is visually dominated by a handful of its brightest members.

The nearly straight, blue-white wisps are streams of large dust particles. As the cloud moves toward Merope, its smaller dust particles are slowed down by the star’s radiation pressure more than the larger particles are. The large dust particles continue on toward the star while the smaller particles are left behind.

The Pleiades cluster has been observed since ancient times, so it has no known discoverer. However, Galileo Galilei, the Italian scientist best known for discovering the largest moons of Jupiter and championing a heliocentric model of the solar system, was the first to observe the Pleiades through a telescope. M45 is located an average distance of 445 light-years from Earth in the constellation Taurus.

Equipment Used

Telescope: William Optics Zenithstar 81 APO
Mount: SkyWatcher EQ6-R Pro

Controller: ZWO ASIAIR Plus
Main Camera: ZWO ASI533MC Pro at gain 101, temperature -10C
Filter: ZWO UV/IR Cut filter
Focal reducer: William Optics 0.8x 2.00"
Focuser: ZWO EAF
Guide Camera: ZWO ASI290MM Mini guidecam
Guide Scope: William Optics 50mm

Stacked from:
Lights 19 at 300s, gain 101, temp -10C
Darks 30 at 300s, gain 101, temp -10C
Flats 30 at 150ms, gain 101, temp -10C
DarkFlats 30 at 150ms, gain 101 temp -10C

Bortle 4 sky.
Stacked in AstroPixelProcessor and adjusted in Photoshop CS4 and Topaz DeNoise AI


   

Taken on: March 4, 2023

Tags:

zwoasi533mcpro

zwoasiairplus

Zenithstar81

uvir-cut

SkyWatcher

Eq6r-pro

EFW

EAF

astrophotography

astropixelprocessor

astronomy

photoshop

M45

pleiades

night

sky « less

Sets appears in: • Astronomy • Messier Objects more » • Star Clusters and Asterisms « less

Groups appears in: • Astrophotography - Astronomy - Astrophysics • astrometry more » • BBC Sky at Night and Stargazing Live « less

Camera: notAvailable, 5700 sec (more info) (hide info)

Camera:	notAvailable
Exposure Time:	5700
Color Space:	Uncalibrated
Software:	Adobe Photoshop CS4 Windows
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