Hyades - Pleiades
  

M45-HyadesLRGB2_600.jpg (406459 bytes)

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Mel 25 - The Hyades
Object Type:
 Open Cluster
Constellation:
 Taurus
Magnitude:
 0.5
Size:
330'
M45 - The Pleiades
Object Type:
 Open Cluster, Reflection Nebula
Constellation:
 Taurus
Magnitude:
 1.6
Size:
 110'

Except for the Ursa Major Moving Cluster, which is not apparent visually as a distinct cluster, the Hyades are the nearest open cluster to the solar system, located at a distance of 151 light-years and estimated to be 660 million years old. The 1st-magnitude orange star Aldebaran is seen near the eastern (left) portion of the Hyades, but is not an actual member. For a description of the Pleiades, see the closeup image. Also visible in this image is the magnitude 6.4 open cluster NGC 1647 to the upper left of Aldebaran.

Equipment: Nikkor 85mm/2 lens/STL-11000M/Astrodon LRGB filters/Paramount ME
F-ratio: f/4
Exposures: LRGB: L 12 x 5 minutes: R 12 x 5 minutes: G 12 x 5 minutes: B 12 x 5 minutes: RGB binned 2x2
Date: December 17 and 18, 2011
Location: Landers, California, USA
Technical Notes: Strong gradients were present and were removed with
Russell Croman's GradientXTerminator plug-in for Photoshop. The RGB image was created in Registar 1.0. Reduce Noise was applied to the RGB image and the dim portions of the luminance image.

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