Crux, the Coalsack and Centaurus
Click for hires
Crux is well known as the Southern Cross (middle, below), a help for
finding the difficult position of Southern celestial pole (out of field,
on the left). A little above the constellation a dark patch interrupt
the Milky Way, that's the Coalsack dark nebula. At the upper border, the
two bright stars are Alpha (orange) and Beta (blue) Centaurus, and on
the right border the yellow object is not a star but the brightest
globular cluster of the sky: Omega Centauri.
||Canon lens 50 mm f/1.8 mkII
(single exp of 10 min)
EOS 5D with Baader filter
(Namibia) at 1350 m height
|25 August 2011, h20 UT
||T= +11°C, RH=27%
|Sky brightness at
zenith (with SQM-L)
||21.69 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.