The Heart and the Soul nebulae in Cassiopeia.
Telescope: Canon EF 135mm f/2L USM telephoto lens (f/2.8 stopped)
CCD Camera: Baader modified Canon 400D, 800 iso, RAW mode
- Mount: Astrotrac with polar scope
- Integration: 30 x 120 sec, (21 bias, 21 dark, 21 flat)
- Date, Location, Temp/Software: August 2012, Grosseto (Italy), 20°C/MaxIm-DL, PixInsight, PhotoShop
- Click HERE for solved map
The Heart nebula (IC1805) and the Soul nebula (IC1848) are two bright nebulae in a region of the Galaxy where a lot of stars are forming. The Heart Nebula lies some 7500 light years away from Earth and is located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. This is an emission nebula showing glowing gas and darker dust lanes. The nebula is formed by plasma of ionized hydrogen and free electrons. The nebula’s intense red output and its configuration are driven by the radiation emanating from a small group of stars near the nebula’s center. This open cluster of stars known as Melotte 15 contains a few bright stars nearly 50 times the mass of our Sun, and many more dim stars that are only a fraction of our Sun’s mass. The cluster used to contain a microquasar that was expelled millions of years ago. The Soul Nebula (IC1848) is emission nebulae in Cassiopeia. Several small open clusters are embedded in the nebula: CR 34, 632, and 634 (in the head) and IC1848 (in the body). The object is more commonly called by the cluster designation IC1848. Small emission nebula IC 1871 is present just left of the top of the head, and small emission nebulae 670 and 669 are just below the lower back area. This complex is the eastern neighbor of IC1805 (Heart Nebula) and the two are often mentioned together as the “Heart and Soul”. NGC 869 and NGC 884 star clusters (right) are also known as the ‘Sword Handle’ clusters because of their location in the constellation of Perseus. These two clusters lie near to the Heart and Soul nebulae although they probably did not form in the nebulae.