This is the newly discovered comet C/2012 S1 (ISON).
Could the dim (magnitude 18) and distant object highlighted in this APOD awarded image by iTelescope veteran Ligustri Rolando of Italy, potentially become one of the brightest comets seen for many years? Or will it break up when it swings around to graze the Sun during November 2013?
The comet C/2012 S1 was recenlty discovered by Vitali Nevski (Belarus) and Artyom Novichonok (Russia), and it is currently moving between the orbits of Jupiter and Saturn. In early 2013 October it will pass close to Mars and will move inwards in its orbit to swing around the Sun (0.012 AU) in late 2013 November. If it survives this close encounter with the Sun, it will then travel to its closest approach to Earth (approx 0.4 AU) in late December 2013.
Understandably, iTelescope members from around the world will be keeping a telescopic eye on this promising comet as it evolves during the next 15 months.
Rolando used the T11 20" Planewave telescope based in New Mexico.
For more Information see here: http://remanzacco.blogspot.it/2012/09/new-comet-c2012-s1-ison.html.