NGC 104 – 47 Tucanae, is the second largest Globular Cluster in the sky ( after Omega Centauri ). Only visible from lower latitudes, it was not recorded by European observers until Nicholas de Lacaille did so whilst visiting South Africa in 1751. Containing millions of stars and appearing about the size of the full moon, 47 Tucanae is in fact approximately 214 light years in diameter and around 15,000 light years from Earth.
The smaller cluster, NGC 121, appears as a companion to 47 Tucanae but is in fact of similar size, more than ten times farther away at around 200,000 light years and belongs to one of the Milkyway’s dwarf galaxies, the Small Magellanic Cloud .
Links:
http://ift.tt/1Op15wT
http://ift.tt/1EqMoWd
Details:
NGC 104 – RA 00h 24.1m, Dec -72 deg 5′.
NGC 121 – RA 00h 268.1m, Dec -71 deg 31′.
Skywatcher Quattro 10″ f4 Newtonian.
Skywatcher Quattro 10″ f4 Newtonian
Skywatcher AZ Eq6 GT Mount
Guiding: Orion Shortube 80 guidescope, Starshoot Autoguider, PHD2
Baader MPCC Mark 3 Coma Corrector
Nikon D5300 (unmodified). Field of view (deg) ~ 1.35 x 0.90
Combination of 66 images ranging from 25 to 200 sec @ ISO400
16 Oct 2015
Pixinsight
Sig Nordal 