101 Must Know Cosmic Things: The Hercules galaxy

For viewers who own or have access to large telescopes and a black telescope, one of the most amazing things in space is the Hercules galaxy cluster. Also known as Abell 2151, this group of galaxies takes the deep word to a whole new level. It is located at an amazing distance of 500 million light -years.

If your server has a browser, its database may not have Abell galaxy clusters. Instead, just look for the shiny branch of this cluster, elliptical galaxy NGC 6047. Without going, first look for the size 5.0 Kappa (κ) Herculis. From that star, move 1 ° northwest and your site will land hundreds of miles, most of which will not be visible. But it always leaves dozens in the range of moderate amateur musicians. About half of all members of the Hercules Cluster are spirals. And some of those galaxies are joining.

Seven members of Abell 2151 are brighter than the 14th magnitude, while only three climb that level: NGC 6047 (magnitude 13.5), NGC 6061 (13.6), IC 1194A (13.6), NGC 6055 ( 13.7), IC 13.7, IC 13.7 NGC 6045 (13.9), and NGC 6056 (13.9). This, NGC 6045 is the most interesting to look at due to the large 15.5 lenticular galaxy PGC 84720 located at its eastern apex. The pair gives most of the idea of ​​a hockey stick or the letter L.

To get a closer look at this galaxy, use a 12-inch telescope with a magnification of more than 250x. The magnitude increases the difference between distant objects such as galaxies and the outer sky. Because Abell 2151 is longer than 1 °, you have to move your point around to see the higher number of galaxies, the more the focus is on higher power.

Be sure to be careful Astronomy’s full list of 101 cosmic objects you can see. New ones will be added every week in 2022.

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