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appears to the naked eye as a very red star, so that the name "Antares"
means "Anti-Ares", or antagonist of Mars, the red planet. In
photography Antares is very yellow, and the nebulae encingling the star
are lightened of the same color. The region around Antares is full of
wonderful nebulae with other colors, such as the red around Sigma Sco
(right) or the blue around Ro Sco (top) and 22 Sco (middle-left).
Two great globular clusters are present in this two pane mosaic: M4 at
bottom and M80 at top-right. And moreover NGC6144 is a little above the
line between Antares and M4.
||Pentax 75 apo refractor
||5 h 40 min
(single exp of 10 min), mosaic of two panels
EOS 5D with Baader filter
(Namibia) at 1350 m height
|24-25 August 2011 (two nights)
||Lodestar with a small refractor (F.L. 100 mm, aperture 23 mm)
||T= +4 and +8 °C, RH=45 and 30%
|Sky brightness at
zenith (with SQM-L)
||21.5 and 21.8 mag/arcsec^2 (MW at zenith)
image is a collaborative effort of the Namibia 2011 expedition.
Processing: Lorenzo Comolli. Images by: Lorenzo Comolli, Luigi Fontana,
Giosuè Ghioldi, Emmanuele Sordini.