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M11 (NGC 6705) is an open cluster located in the constellation of Scutum and is one of the richest and most compact. Also known as Wild Duck Cluster, has a magnitude of 6.3 and it is located about 6,000 light years from Earth. Watching this cluster through a telescope, you will see one star that stands out for its brightness in the center.
Its magnitude joint band B (blue filter) is equal to 6.32, its magnitude in V band (green filter) is equal to 5.80.
From its radial velocity, 29.49 km/s, we suppose that the Earth moves away over 106,160 km/h, this speed is caused by the combination of its orbital motion around the nucleus of the Milky Way, plus the speed itself Sun and Earth.
Located on the Milky Way, in a very rich stellar background is formed by hot stars blue and white, although there are some parts yellowish or orange.
Resolvable with a small telescope with 40-50 increases among its components are some variable stars:
* Kustner 263: orange star belonging to type spectroscopic binary "B-band magnitude equal to 12.64, V-band magnitude equal to 11.39, G8II-III spectral type.
* Kustner 488: yellow star belonging to type spectroscopic binary "B-band magnitude equal to 12.30, V-band magnitude equal to 11.36.
* Kustner 545: blue star, B-band magnitude equal to 11.95, V-band magnitude equal to 12.66.
All of them can be captured by amateur telescopes equipped with medium (150-200 mm aperture) equipped with a CCD camera.
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