Tonight, August 30, will be the second of two August super moons for this month. Each month, a full moon has a name. For August, the full moon is traditionally known as the Sturgeon Moon (because the giant sturgeon of the Great Lakes and Lake Champlain were most readily caught during this part of summer).
But this is the second full moon in August, and if there is a second full moon during any calendar month, then that second full moon is known as a “Blue Moon”. But tonight's full moon is 1/3
#Astronomy #Astrophotography #NightSky #Space #Sirius
Soon, very soon, Sirius will be showing off. This short video shows what happens when you place Sirius out of focus.
spread out to a diameter of 25 light-years. At an estimated distance of 980 light-years from our Earth, this corresponds to an apparent diameter of 80 arc minutes, more than twice the apparent size of the full Moon.
Both Messier 6 and Messier 7 are near each other and can be seen by the unaided eye but the use of binoculars and/or telescopes helps in seeing the details of the star clusters.
The third image cannot be seen by the unaided eye or binoculars.
This third image is NGC 6453 3/5
Out again last night to get images on some more star clusters using the telescope. The rest of this week I'll be setting up the camera for catching “shooting stars” (the Perseid meteor shower will peck on the night of August 12 and the morning of August 13).
This first image is Messier 6, also known as the Butterfly Cluster. This is an open star cluster located about 1,600 light-years from our Earth in the southern constellation of Scorpius. This cluster has about 80 whitish or blue-white 1/5
Just to the right of the star Antares ("the heart of the scorpion"), is the globular star cluster Messier 4 (also designated NGC 6121). This is an easy star cluster to find, mostly due to its closeness to the star Antares and its size, appearing around the same size as our moon. But in reality, at 6,033 light-years from our Earth, it is 75 light-years across. It is also the closest globular star cluster to our Earth.
1st image is the star Antares.
2nd image is Messier 4.
Just above Messier 8 is another star-forming region called Messier 20 (Trifid Nebula). The first time I took pictures of this nebula (two years ago), all I got was the open star cluster and none of the nebulae. This is also an unusual item because it's actually four different objects: an emission nebula, a reflection nebula, a dark nebula and an open star cluster.
The reddish part of Messier 20 is the emission nebulae, caused by the ultraviolet light of nearby stars. Emission nebulae are 1/3