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Leo Trio
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The Leo Trio of Galaxies - M65, M66, and NGC 3628
About this Object: |
Leo is one of the more
unrated constellations in the night sky. No, it is not filled with
colorful nebula, a distinction of any constellation so far removed from
the plain or our Milky Way. However, Leo is home to several of the best
galaxies visible from earth. This image shows three of the most famous
of the Leo galaxies, and together they are often called the "Leo Trio"
or "Leo Triplet" of galaxies. Belonging to the M66 group, they reside
some 35 million light years away.
In the image above, M65 is
the oblique spiral in the upper right, M66 is below, and NGC 3628 is the
edge-on spiral to the left. Notice the faint trail of dust extending
below and to the left of this galaxy. Together, they are a beautiful
trio indeed, a favorite target for many astroimagers in the spring
months.
The cluster is quite easy to
find, resting in the "back leg" of the Lion itself, between the Theta
and Iota stars in Leo. Most any scope in dark skies can detect these
bright galaxies - mag 8.9 for M66, mag 9.2 for M65, and mag 9.6 for NGC
3628. |
Location:
Comanche Springs
Astronomy Campus near Crowell, Texas
Date: February 18-19, 2007
Seeing:
9/10
Transparency: 9/10, windy on second night
Temperature: -25 degrees C on camera
Scope/Mount: Tak TOA-150 (with 67 flattener) on Paramount ME
Camera: SBIG STL-11000M astro CCD camera plus AO-L adaptive
optics
Exposure Info: LRGB image; 160:50:40:60 minutes (10 minute
subexposures for RGB, 20 minute subexposures for L)
Processing
Information:
Acquisition with CCDSoft.
Calibration (darks/flats), and registration in CCDstack (median combine).
RGB/LRGB combine, color balance, levels/curves, and noise removal (Noel
Carboni's Astronomy Tools) in Photoshop CS. Special thanks to the Three
Rivers Foundation for use of the equipment.
Astronomi
Galaxy Resimler
Nebula Resimler Yıldız Resimleri
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