The Heart Nebula, IC 1805, Sh2-190, 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. (WIKI)

Imaged with 10" F/2.8 POWERNEWT Astrograph.
S2-HA-O3 MAPPED AS RGB
HA 140 MIN
S2,O3 15MIN EACH BINX3
TOTAL OF 3:10 HRS

SBIG ST 8300M CAMERA WITH BAADER FILTERS
Losmandy G 11 mount with Gemini 2

Imaged from the NEGEV desert in ISRAEL