47 Tucanae Globular Cluster (NGC 104)
Image by Martin_Heigan
47 Tucanae (NGC 104) or 47 Tuc is a Globular Cluster located in the constellation Tucana. It is about 16,700 light-years from Earth, and 120 light years across. It is the second brightest globular cluster in the sky (after Omega Centauri), and is noted for having a very bright and dense core. It is also one of the most massive globular clusters in the Galaxy, containing millions of stars. The Globular Cluster is estimated to be 13.1 billion years old.
About this image:
A few short unguided 10 second ISO 6400 exposures, imaged in the rural dark skies of the Waterberg, Limpopo Province, South Africa.
About the Star Colors:
You will notice that star colors differ from red, orange and yellow, to blue. This is an indication of the temperature of the star’s Nuclear Fusion process. This is determined by the size and mass of the star, and the stage of its life cycle. In short, the blue stars are hotter, and the red ones are cooler.
GSO 6" f/4 Imaging Newtonian Reflector Telescope.
Baader Mark-III MPCC Coma Corrector.
Astronomik CLS Light Pollution Filter.
Celestron AVX Mount.
Canon 60Da DSLR.
Canon TC-80N3 Timer/Remote Controller.
RA, Dec center: 6.0051664192, -72.0814061919 degrees
Orientation: 0.968652414382 deg E of N
Pixel scale: 4.46044756117 arcsec/pixel